For most e-bike owners, I’d start with the Kryptonite Keeper 712 chain lock: its four-foot reach gives more locking flexibility than the shorter chains here. The NDakter U-lock with a 6-foot cable is a standout for riders who want a rigid lock plus a way to secure a wheel, while the Sportneer 5-digit chain suits anyone who would rather not carry keys. The main tradeoff is between a more rigid U-lock, a chain that can reach awkward parking points, and a lighter cable that is easier to carry but offers less resistance to cutting. E-bike security also depends on where and how you lock the frame, not just the lock’s advertised length. Read on for the full breakdown of all 15 options and guidance on choosing the right setup.
Get sports gear delivered free with Prime
- Fast, free delivery on millions of items
- Prime Video, Amazon Music and more included
- Member-only deals all year
Complete the kit
Key Takeaways
- Longer chains offer more parking flexibility: The two four-foot Kryptonite Keeper 712 listings give more reach than the 2.62- to 3-foot chain options, which can help when a rack is bulky or the frame sits far from the anchor.
- A U-lock-and-cable combination covers different locking jobs: The NDakter U-lock with a 6-foot cable pairs a rigid frame lock with extra reach for a wheel; the cable is a supplement, not a substitute for the U-lock.
- Keyless convenience varies by lock style: The Sportneer 5-digit chain avoids keys, while keyed chains and U-locks may suit riders who prefer a simpler physical key routine.
- Cable-only convenience comes with a security tradeoff: The Master Lock 6-foot combination cable is easy to route and carry, but riders parking an e-bike for longer periods should prioritize a chain or U-lock as the primary lock.
- Several listings are close alternatives rather than distinct designs: The two Keeper 712 listings share the same named model and length, while NDakter offers multiple chain lengths and U-lock-and-cable versions; fit and locking style matter more than listing count.
| Weogine Heavy-Duty Bicycle Chain Lock, 2.72 ft, with 3 Keys |  | Best Lightweight Keyed Chain | Chain length: 2.72 ft | Chain thickness: 4 mm | Chain material: Alloy steel | VIEW LATEST PRICE | See Our Full Breakdown |
| Kryptonite Keeper 712 Combo Bike Chain Lock, 4ft Resettable |  | Best for Longer Reach and Combination Access | Chain length: 4 ft (120 cm) | Chain link thickness: 7 mm | Chain material: Four-sided manganese steel | VIEW LATEST PRICE | See Our Full Breakdown |
| Titanker Heavy Duty Bicycle Lock Chain with Keys – 3 Feet Anti-Theft Lock for Bikes, Motorcycles, Doors, Gates, Fences, Grills (6mm Thick) |  | Best Midweight Keyed Chain | Chain length: 3 ft | Chain thickness: 6 mm | Material: Alloy steel | VIEW LATEST PRICE | See Our Full Breakdown |
| Corki Heavy Duty Bike Lock with 5ft Cable and U Lock |  | Best U-Lock and Cable Combination | Shackle diameter: 17 mm | Shackle material: Hardened steel | Cable length: 5 ft | VIEW LATEST PRICE | See Our Full Breakdown |
| Sportneer 5-Digit Combination Bike Lock – Heavy Duty, Keyless, Anti-Theft Chain Lock for Bicycle, Motorcycle, Scooter, Gate & More |  | Best Keyless Chain for Flexible Sizing | Available lengths: 3.2 ft, 3.6 ft, 4 ft | Available thicknesses: 4 mm, 6 mm | Chain material: Manganese steel | VIEW LATEST PRICE | See Our Full Breakdown |
| NDakter Heavy Duty Anti-Theft Bike U Lock with 6ft Cable |  | Best for High-Security U-Lock Coverage | Shackle diameter: 18 mm | Weight: 3.4 lbs | Inner dimensions: 5.5 x 7 in | VIEW LATEST PRICE | See Our Full Breakdown |
| Sportneer Heavy Duty Bike U Lock with 5ft Steel Cable and Mounting Bracket |  | Best U-Lock for Everyday Commuting | Shackle diameter: 17 mm | Lock body dimensions: 7.76 x 5.02 in | Weight: 1.64 lbs | VIEW LATEST PRICE | See Our Full Breakdown |
| Electric Scooter Lock with 36.2-inch Chain and Bag |  | Best for Scooters and Scratch-Sensitive Frames | Material: Alloy steel and rubber | Chain length: 36.2 in | Chain diameter: 0.23 in | VIEW LATEST PRICE | See Our Full Breakdown |
| Master Lock 6 ft Cable Bike Lock with 4-Digit Combination, 1/2 in Diameter |  | Best for Keyless, Low-Risk Stops | Model number: 8122D | Material: Braided steel with vinyl coating | Length: 6 ft (1.8 m) | VIEW LATEST PRICE | See Our Full Breakdown |
| Kryptonite Keeper 712 Bike Chain Lock – 4 ft Heavy-Duty Anti-Theft |  | Best for Flexible, Keyed Chain Security | Model number: 720018001706 | Chain length: 4 ft (120 cm) | Link size: 7 mm | VIEW LATEST PRICE | See Our Full Breakdown |
| Heavy-Duty Chain Lock for Bikes and Scooters – 36.22 inch |  | Best for Maximum Versatility and High Security | Length: 36.22 inches | Chain Diameter: 0.23 inches | Material: Alloy steel | VIEW LATEST PRICE | See Our Full Breakdown |
| Heavy Duty Combo Bike U Lock with Steel Cable for E-Bikes and Bicycles |  | Best for Keyless Security and Versatile Locking | Shackle Diameter: 14.6mm / 0.57 inch | Cable Length: 5 feet | Material: Hardened alloy steel | VIEW LATEST PRICE | See Our Full Breakdown |
| NDakter Heavy Duty Combo Bike U Lock with 5ft Steel Cable |  | Best for Heavy-Duty Security and Locking Versatility | Shackle Diameter: 14.6mm | Locking Dimensions: 7.5″ x 4.5″ | Exterior Dimensions: 9.8″ x 7″ | VIEW LATEST PRICE | See Our Full Breakdown |
| NDakter Bike Lock, 5 Digit Combination Heavy Duty Anti Theft Bicycle Chain Lock, 2.62/3.2/4.27/5/6Ft Long, High Security Resettable, Suitable for Bike, Scooter, Door, Gate, Fence, 4/6mm Thick |  | Best for Long Length and High Security in Multiple Locking Scenarios | Material: Alloy Steel, Zinc | Length: 2.62/3.2/4.27/5/6 feet | Thickness: 4/6 mm | VIEW LATEST PRICE | See Our Full Breakdown |
| Master Lock U-Lock Keyed Bike Lock, 7-1/4-inch Anti-Theft Device, 8320D |  | Best for Heavy-Duty Outdoor Security with Keys | Lock Body Width: 7-1/4 inches | Shackle Length: 9 inches | Material: Hardened steel, vinyl coating | VIEW LATEST PRICE | See Our Full Breakdown |
| electric bike lock | Weight | Lock type | Material |
|---|---|---|---|
| Weogine Heavy-Duty Bicycle Cha | 349.83 g | Key lock | — |
| Kryptonite Keeper 712 Combo Bi | 3.75 lb (1.7 kg) | Resettable combination | — |
| Titanker Heavy Duty Bicycle Lo | 1.4 lb | Key lock | Alloy steel |
| Corki Heavy Duty Bike Lock wit | 1.64 lb | U-lock with cable | — |
| Sportneer 5-Digit Combination | — | Resettable combination | — |
| NDakter Heavy Duty Anti-Theft | 3.4 lbs | — | — |
| Sportneer Heavy Duty Bike U Lo | 1.64 lbs | — | — |
| Electric Scooter Lock with 36. | — | Scooter lock | Alloy steel and rubber |
| Master Lock 6 ft Cable Bike Lo | — | Resettable combination lock | Braided steel with vinyl coating |
| Kryptonite Keeper 712 Bike Cha | 3.75 lbs (1.70 kg) | Hardened deadbolt with disc-style cylinder | Hardened manganese steel |
| Heavy-Duty Chain Lock for Bike | Not specified | — | Alloy steel |
| Heavy Duty Combo Bike U Lock w | — | — | Hardened alloy steel |
| NDakter Heavy Duty Combo Bike | 1.96 lbs | — | — |
| NDakter Bike Lock | About 1.45 pounds | — | Alloy Steel, Zinc |
| Master Lock U-Lock Keyed Bike | — | — | Hardened steel, vinyl coating |
More Details on Our Top Picks
Weogine Heavy-Duty Bicycle Chain Lock, 2.72 ft, with 3 Keys
The Weogine is the lightest chain option in this group at 349.83 g, making it easier to carry than the 1.4-pound Titanker or the 3.75-pound Kryptonite Keeper 712. Its 2.72-foot, 4 mm alloy-steel chain suits brief stops and quick tie-ups, while the fabric sleeve helps limit paint scratches. The lock also closes without a key, and three included keys provide handy spares. Those portability benefits come with a clear security tradeoff: its thinner chain is less suited to resisting determined cutting than the 7 mm Kryptonite or the 6 mm Titanker. I’d choose it for a lower-risk parking routine where carrying weight matters more than maximum deterrence, not for leaving an e-bike unattended for long stretches.
Pros:- Lightweight at 349.83 g for easy daily carry.
- Three keys reduce the risk of being stranded after losing one.
- Key-free locking makes quick stops simpler.
- Protective fabric cover helps guard the frame from scratches.
Cons:- The 4 mm chain offers less resistance to cutting than the thicker chains in this roundup.
- At 2.72 feet, it may be too short for some racks or larger locking setups.
Best for: E-bike riders who make short stops in lower-risk areas and want a light keyed chain with spare keys.
Not ideal for: Owners who regularly park in high-theft locations or need a thicker chain and greater cutting resistance.
- Chain length:2.72 ft
- Chain thickness:4 mm
- Chain material:Alloy steel
- Cylinder material:Zinc alloy
- Lock type:Key lock
- Keys included:3
- Weight:349.83 g
- Cover:Polypropylene fabric
- Warranty:1 year
Our verdict“Choose the Weogine for lightweight, short-stop security; pick the thicker Titanker or Kryptonite chain when theft resistance matters more.”
Kryptonite Keeper 712 Combo Bike Chain Lock, 4ft Resettable
The Kryptonite Keeper 712 is the most substantial chain in this set: its 7 mm four-sided manganese-steel links and four-foot length offer more reach and a sturdier physical barrier than the Weogine’s 4 mm chain. The resettable four-digit combination means riders can leave keys at home, and the weather-resistant nylon sleeve helps protect both chain and bike finish. It carries a Sold Secure Bronze rating, described as suited to moderate security needs, so I would not treat it as a high-security answer for long, unattended parking. At 3.75 lb, it is also much heavier than the compact Weogine or the Corki U-lock. This is the more practical pick when reach and keyless access outweigh the burden of carrying a heavy chain.
Pros:- 7 mm four-sided manganese-steel links provide a more substantial barrier than the thinner Weogine chain.
- Four-foot length offers more flexibility around racks and fixed objects.
- Resettable combination avoids carrying a key.
- Weather-resistant nylon sleeve helps protect the chain and bike finish.
Cons:- At 3.75 lb, it is the heaviest option among these five products.
- Sold Secure Bronze is specified for moderate security needs, not high-security parking.
- A combination requires remembering the code and can be less direct than using a key.
Best for: E-bike commuters who need a longer chain, prefer combination access, and park for moderate periods in reasonably busy areas.
Not ideal for: Riders seeking a lightweight daily carry lock or a lock intended for high-security, unattended parking.
- Chain length:4 ft (120 cm)
- Chain link thickness:7 mm
- Chain material:Four-sided manganese steel
- Lock type:Resettable combination
- Combination:4 digits
- Weight:3.75 lb (1.7 kg)
- Weather resistance:Yes
- Included components:Chain, nylon sleeve, 2 keys
Our verdict“Pick the Keeper 712 if you value a long, keyless chain and accept its weight and moderate-security rating.”
Titanker Heavy Duty Bicycle Lock Chain with Keys – 3 Feet Anti-Theft Lock for Bikes, Motorcycles, Doors, Gates, Fences, Grills (6mm Thick)
The Titanker fills the middle ground between the carry-friendly Weogine and the heavier Kryptonite Keeper 712. Its 6 mm alloy-steel chain is thicker than the Weogine’s 4 mm links, while the three-foot length gives it more reach than that shorter chain without the Keeper’s 3.75-pound carry weight. A cloth sleeve and dust cover help limit scratches and keep debris away from the lock, and two keys are included. The tradeoff is a fairly specific fit: three feet may restrict where you can secure a bike, and the product advises against leaving it outdoors long-term in high-crime areas. Regular lubrication may also be needed. I’d choose it for moderate everyday use when a keyed chain feels more straightforward than the Keeper’s combination.
Pros:- 6 mm alloy-steel chain is thicker than the Weogine’s 4 mm links.
- Three-foot length offers more reach than a compact chain.
- Cloth sleeve and dust cover help protect the bike and lock mechanism.
- Two included keys provide a spare.
Cons:- Three feet may not reach around larger frames, racks, or fixed objects.
- Product guidance discourages long-term outdoor use in high-crime areas.
- The locking mechanism may need regular lubrication.
Best for: Riders who want a moderately thick, keyed chain for routine stops and value a balance between reach and carry weight.
Not ideal for: E-bike owners who need a long chain for awkward racks or plan to leave their bike outside for extended periods in high-risk areas.
- Chain length:3 ft
- Chain thickness:6 mm
- Material:Alloy steel
- Weight:1.4 lb
- Lock type:Key lock
- Keys included:2
- Link length:1.97 in
- Protective sleeve:Yes
- Dust cover:Yes
Our verdict“Choose the Titanker for a straightforward midweight chain and key lock, but skip it if you need longer reach or high-risk, long-term security.”
Corki Heavy Duty Bike Lock with 5ft Cable and U Lock
The Corki takes a different approach from the chain locks here: a 17 mm hardened-steel U-lock secures the frame, while its five-foot cable can loop through a wheel or another part of the bike. That two-part setup gives an e-bike owner more locking options than the Weogine or Titanker chains alone, without carrying the 3.75-pound Kryptonite Keeper 712. At 1.64 lb, it remains portable, and the silicone sleeve helps prevent frame scratches. Its usefulness depends on fit, though: the listed frame-tube range is 26–38 mm, and the cable should not be mistaken for the hardened shackle’s primary strength. There is no stated weather-resistance feature, either. I’d favor it for riders who want a compact main lock plus extra reach, provided their frame fits the bracket.
Pros:- 17 mm hardened-steel shackle provides a substantial main locking point.
- Five-foot cable adds reach for a wheel or secondary locking point.
- At 1.64 lb, it is lighter than the Kryptonite Keeper chain.
- Silicone sleeve and mounting bracket support frame protection and transport.
Cons:- Fit is limited to frame tubes between 26 mm and 38 mm.
- The cable is not a substitute for the hardened U-lock shackle as the primary barrier.
- No weather-resistance or waterproof feature is specified.
Best for: E-bike riders who want a hardened U-lock for the frame plus a long cable for a wheel, and whose frame tubes fit the stated range.
Not ideal for: Owners with frame tubes outside 26–38 mm or riders who want one flexible chain to secure a bike to a wide range of objects.
- Shackle diameter:17 mm
- Shackle material:Hardened steel
- Cable length:5 ft
- Cable material:PVC-coated braided steel
- Weight:1.64 lb
- Lock type:U-lock with cable
- Keys included:2
- Frame tube fit:26–38 mm
- Included components:2 keys, installation bracket
Our verdict“Choose the Corki if your frame fits and you want a portable U-lock with extra cable reach rather than a full chain lock.”
Sportneer 5-Digit Combination Bike Lock – Heavy Duty, Keyless, Anti-Theft Chain Lock for Bicycle, Motorcycle, Scooter, Gate & More
The Sportneer stands out for riders who want a chain without carrying keys: its resettable five-digit combination offers up to 100,000 possible codes, more than the four-digit system on the Kryptonite Keeper 712. It is also sold in several length and thickness configurations, so buyers can match the lock to their parking setup instead of settling for one fixed size. The listed manganese-steel chain and zinc-alloy lock head give it a more substantial security story than the Weogine’s 4 mm chain, but the exact thickness depends on the selected version. That makes it especially important to check the chosen configuration before buying. As with the Keeper, keyless convenience means remembering a code; it also requires checking that the chain fits through the bike’s frame and wheel openings.
Pros:- Five-digit resettable combination provides keyless access.
- Up to 100,000 possible combinations are specified.
- Multiple stated lengths and thicknesses let buyers tailor the chain to their setup.
- Manganese steel and a scratch-resistant cover suit varied bike and property uses.
Cons:- Available thickness varies by configuration, so the selected version must be checked carefully.
- The chain may not fit through every frame or wheel opening.
- A combination lock requires remembering the code.
Best for: Riders who want keyless access and need to choose a chain length and thickness suited to their e-bike and parking routine.
Not ideal for: Buyers who want one clearly specified fixed configuration or prefer a key-operated lock over remembering a code.
- Available lengths:3.2 ft, 3.6 ft, 4 ft
- Available thicknesses:4 mm, 6 mm
- Chain material:Manganese steel
- Lock head material:Zinc alloy
- Lock type:Resettable combination
- Combination length:5 digits
- Possible combinations:Up to 100,000
- Lock head diameter:1.3 in
- Color:Black
Our verdict“Choose the Sportneer if you want a configurable, keyless chain; prefer the fixed-spec Kryptonite Keeper 712 if you want a clearly stated 7 mm chain.”
NDakter Heavy Duty Anti-Theft Bike U Lock with 6ft Cable
The 18 mm hardened steel shackle and double deadbolt give this NDakter a more security-focused profile than the Master Lock 6 ft Cable Bike Lock, which is designed for basic deterrence rather than resisting determined attacks. Its 6 ft steel cable adds reach for securing a wheel or accessory alongside the frame, while the U-lock remains the primary barrier. At 3.4 lbs, though, this is a substantial load to carry, and unlike the Sportneer Heavy Duty Bike U Lock, it does not include a mounting bracket. The 5.5 x 7 in interior also limits what it can fit around, so larger frames or bulky parking points may be awkward. I’d choose it for riders prioritizing a thick shackle and flexible secondary tether over lighter everyday carry.
Pros:- 18 mm hardened steel shackle with double deadbolt construction
- Included 6 ft cable adds reach for securing a wheel or accessory
- Dust cover and silicone protection help shield the lock from weather and wear
- Three brass keys provide spares for more than one rider
Cons:- At 3.4 lbs, it is cumbersome for riders who carry a lock daily
- No mounting bracket is included
- 5.5 x 7 in inner dimensions may not fit larger frames or wide fixtures
Best for: E-bike owners parking in exposed public areas who want a thick U-lock plus a cable for a wheel or accessory.
Not ideal for: Weight-conscious commuters and riders with oversized frames or wide parking points; it is heavy, its interior is limited, and no mounting bracket is included.
- Shackle diameter:18 mm
- Weight:3.4 lbs
- Inner dimensions:5.5 x 7 in
- Outer dimensions:7.8 x 9.2 in
- Cable length:6 ft
- Cable diameter:0.4 in
- Keys included:3 brass keys
- Materials:Hardened steel and zinc alloy
Our verdict“Choose this NDakter if you want a thick-shackle U-lock with a long secondary cable and can accept the weight and limited fit.”
Sportneer Heavy Duty Bike U Lock with 5ft Steel Cable and Mounting Bracket
The Sportneer pairs a 17 mm shackle with a 5 ft cable and, unlike the NDakter Heavy Duty Anti-Theft Bike U Lock, includes a mounting bracket for carrying the lock on the bike. That bundled bracket makes it a more practical daily setup, and its 1.64 lb weight is considerably easier to manage than NDakter’s 3.4 lb build. The tradeoff is a slightly thinner shackle and shorter cable, so riders seeking the thickest shackle or extra cable reach may prefer the NDakter. Its 7.76 x 5.02 in lock body also calls for checking frame and mounting space before buying. I’d put this ahead of a cable-only option for routine city stops, but it still requires thoughtful locking and is not a substitute for secure parking.
Pros:- 17 mm shackle offers a sturdier primary barrier than a cable lock
- 5 ft steel cable adds flexibility for securing a wheel
- Mounting bracket is included for on-bike carrying
- Water- and dust-resistant coating suits outdoor use
Cons:- Shackle is thinner than the NDakter 18 mm U-lock
- Bracket needs suitable space on the bike frame
- The U-lock and cable are bulkier than a compact cable-only setup
Best for: Regular bike commuters who want a U-lock, secondary cable, and included frame bracket in one carry-ready package.
Not ideal for: Riders who need the thickest shackle available or have little room on the frame for the bracket.
- Shackle diameter:17 mm
- Lock body dimensions:7.76 x 5.02 in
- Weight:1.64 lbs
- Cable length:5 ft
- Materials:Zinc alloy and alloy steel
- Included components:U-lock, steel cable, mounting bracket, 2 keys
Our verdict“Pick the Sportneer for a more convenient daily U-lock kit, especially if you want an included bracket and lighter carry than the NDakter.”
Electric Scooter Lock with 36.2-inch Chain and Bag
This handcuff-style chain is aimed at riders who want a flexible lock that can wrap around scooter frames and varied fixtures. Its rubber-covered alloy steel chain helps prevent scratches, and the included waterproof bag gives it a dedicated place to ride when not in use. At 36.2 inches, it is shorter than the six-foot Master Lock cable, but its chain format is less floppy and better suited to wrapping around a scooter’s frame and a fixed object. The 0.23-inch chain diameter and 1.65 kg weight create a middle ground: more substantial than a lightweight cable, but not as easy to carry as the Sportneer U-lock’s listed 1.64 lb weight. I’d favor it for scooters and finish protection, not for riders seeking a compact, light bicycle lock.
Pros:- Alloy steel chain provides a more substantial format than a basic cable
- Rubber covering helps protect paint and improve handling
- Waterproof storage bag is included
- Dual-lock design suits scooter and bicycle use
Cons:- At 1.65 kg, it adds a noticeable carrying burden
- 36.2-inch length can limit reach around large fixtures
- Key operation does not offer the keyless convenience of the Master Lock combination cable
Best for: Electric scooter owners who need a covered chain, want to reduce scratches, and value a storage bag.
Not ideal for: Cyclists seeking a lightweight lock for daily carry or the extra reach of a long cable; this chain is heavy and under four feet long.
- Material:Alloy steel and rubber
- Chain length:36.2 in
- Chain diameter:0.23 in
- Item weight:1.65 kg
- Lock type:Scooter lock
- Control method:Key
- Additional features:Handcuff chain design, scratch-resistant cover, dual-lock design
Our verdict“Choose this chain for a scooter or scratch-sensitive frame when its covered links and bag matter more than low weight or long reach.”
Master Lock 6 ft Cable Bike Lock with 4-Digit Combination, 1/2 in Diameter
The Master Lock is the lineup’s convenience-first choice: a resettable four-digit combination means there is no key to carry or share, and its 6 ft braided cable reaches around larger fixtures more easily than the shorter chain on the Electric Scooter Lock with 36.2-inch Chain and Bag. The vinyl coating helps keep the cable from rubbing against the bike’s finish. That flexibility comes with a clear security limit: a cable is a weaker primary barrier than the hardened U-locks from Sportneer or NDakter, so I’d treat this as a deterrent for brief stops or as a secondary lock, not the sole defense for an expensive e-bike left unattended. Its 1/2-inch diameter offers reach, but not the rigid protection of a steel shackle.
Pros:- Resettable four-digit combination avoids carrying a key
- Six-foot cable reaches around larger fixtures
- Vinyl coating helps protect bike paint and equipment
- Braided cable bends easily for storage and varied locking positions
Cons:- Cable provides less resistance than the NDakter or Sportneer U-locks
- Not suited as the sole lock for high-risk parking
- Combination access may be less convenient than a key in poor visibility or when hands are cold
Best for: Riders making brief stops in lower-risk locations who prioritize keyless access and flexible reach.
Not ideal for: Owners leaving an expensive e-bike unattended in high-theft areas or seeking a primary lock with stronger physical resistance.
- Model number:8122D
- Material:Braided steel with vinyl coating
- Length:6 ft (1.8 m)
- Diameter:1/2 in (13 mm)
- Lock type:Resettable combination lock
- Combination:4 digits
- Color:Black
Our verdict“Choose the Master Lock for keyless convenience and reach at brief, lower-risk stops, not as a heavy-duty e-bike lock.”
Kryptonite Keeper 712 Bike Chain Lock – 4 ft Heavy-Duty Anti-Theft
The Kryptonite Keeper 712 suits riders who need a chain that can bend around a frame and fixed object, rather than the fixed opening of the NDakter or Sportneer U-locks. Its four-sided, 7 mm hardened manganese steel links, hardened deadbolt, and disc-style cylinder make it a more security-minded choice than the Master Lock cable, while the nylon sleeve helps protect both the chain and bike finish. The four-foot length is easier to manage than a longer cable, but it offers less reach when parking around wide posts. At 3.75 lbs, it is also heavier than the Sportneer U-lock, so I’d favor it for riders who value chain flexibility and keyed locking over easy daily carrying. Two ergonomic keys and the Key Safe Program add useful key-management support.
Pros:- Four-sided 7 mm hardened manganese steel chain links
- Hardened deadbolt and disc-style cylinder provide a security-focused keyed design
- Nylon sleeve protects the chain and bike finish
- Two ergonomic keys and access to the Key Safe Program
Cons:- At 3.75 lbs, it is heavy for daily commuting
- Four-foot length may not reach around wider fixtures
- Chain is less convenient to mount on a frame than the Sportneer U-lock with its included bracket
Best for: E-bike owners who want a flexible, keyed chain for regular locking around varied fixtures and can carry a heavier lock.
Not ideal for: Commuters focused on light carry or riders who often need to reach around large posts; the chain is heavy and four feet long.
- Model number:720018001706
- Chain length:4 ft (120 cm)
- Link size:7 mm
- Material:Hardened manganese steel
- Weight:3.75 lbs (1.70 kg)
- Lock type:Hardened deadbolt with disc-style cylinder
- Keys included:2 ergonomic keys
- Weather protection:Nylon sleeve covering the chain
Our verdict“Pick the Keeper 712 if you want a flexible, keyed chain with a protective sleeve and accept its weight and limited reach.”
Heavy-Duty Chain Lock for Bikes and Scooters – 36.22 inch
This heavy-duty chain lock excels in offering top-tier security, especially compared to U-locks like the Master Lock 8320D, which can be more restrictive in locking options. Its long, thick alloy steel chain provides flexibility to secure multiple items or larger objects, making it ideal for outdoor parking scenarios. The rubber cover not only protects against scratches but also enhances grip during use, yet the absence of detailed weight info means it might be less portable for users needing lightweight options. This lock is best suited for those prioritizing security and versatility, particularly in environments where cutting tools are a concern. However, its potential for scratches if not handled carefully is a minor drawback. Overall, this chain is ideal for bike owners needing a flexible, high-security option for outdoor storage.
Pros:- High security resistant to cutting, sawing, and theft
- Long and thick chain offers versatile locking options
- Rubber coating prevents scratches and improves grip
Cons:- No specific weight information, potentially less portable
- Potential for scratches if not handled carefully
Best for: Bicycle and scooter owners who need a long, versatile lock for outdoor use in high-theft areas
Not ideal for: Urban commuters who prefer lightweight, compact locks for daily city riding
- Length:36.22 inches
- Chain Diameter:0.23 inches
- Material:Alloy steel
- Chain Cover:Rubber
- Weight:Not specified
Our verdict“This chain lock is best suited for users prioritizing maximum security and flexibility in outdoor environments.”
Heavy Duty Combo Bike U Lock with Steel Cable for E-Bikes and Bicycles
This U lock with a steel cable offers excellent resistance against cutting and leverage attacks, making it a strong competitor to the NDakter Heavy Duty U Lock, especially for those who want the convenience of a keyless, combination lock. The 4-digit resettable code simplifies access and reduces the risk of losing keys, while the included 5-foot steel cable allows locking multiple bikes or securing accessories. Compared to keyed locks like the Master Lock 8320D, it provides greater convenience, but its heavier bulk and lack of a dedicated mounting bracket can make it less portable for daily commuters. This lock is ideal for bike owners seeking high security with minimal fuss. Still, the weight and size might deter users who prioritize portability. Overall, it’s a solid choice for those who want reliable, keyless security for larger or multiple items.
Pros:- High-security hardened steel shackle resistant to cutting and leverage
- Keyless 4-digit resettable combination for convenience
- Includes a long steel cable for multiple locking options
Cons:- Heavy and bulky, less portable for some users
- No included bike mount for easy carrying
- Initial setup requires careful resetting of the code
Best for: E-bike owners and cyclists needing a high-security, keyless lock with flexible locking options
Not ideal for: Urban riders who prefer lightweight, easy-to-carry locks for daily use
- Shackle Diameter:14.6mm / 0.57 inch
- Cable Length:5 feet
- Material:Hardened alloy steel
- Interior Dimensions:7.5″ x 4.5″
- Exterior Dimensions:9.8″ x 7″
- Initial Combination:0000
Our verdict“This lock makes sense for users seeking durable, keyless security with versatile locking capabilities.”
NDakter Heavy Duty Combo Bike U Lock with 5ft Steel Cable
This heavy-duty U lock with a steel cable offers robust security thanks to its hardened steel shackle and a 5-foot steel cable for multiple locking configurations. It compares favorably to the B0D3KQ67MC model by providing ample internal space for securing bikes, wheels, and accessories, making it a versatile choice for larger or multiple items. Its keyless, 4-digit resettable combination enhances convenience, though the lack of a mounting bracket could reduce portability. The large size and weight, at just under 2 pounds, make it less ideal for daily commuters who prefer lightweight systems. This lock is best for those needing high security and locking flexibility for various outdoor items. Changing the default code from ‘0000’ is recommended for better security.
Pros:- Heavy-duty construction resists cutting and leverage attacks
- Extra 5ft steel cable for locking multiple items or larger objects
- Keyless 4-digit combination for easy access
Cons:- No mounting bracket included, less portable
- Large size may be cumbersome for some users
- Default code needs changing for security
Best for: Bike and scooter owners needing a heavy-duty, versatile lock for outdoor security
Not ideal for: Urban riders seeking lightweight, compact locks for daily city trips
- Shackle Diameter:14.6mm
- Locking Dimensions:7.5″ x 4.5″
- Exterior Dimensions:9.8″ x 7″
- Weight:1.96 lbs
- Steel Cable Length:5 ft
Our verdict“This lock is best for those wanting serious security and locking flexibility without weight being a concern.”
NDakter Bike Lock, 5 Digit Combination Heavy Duty Anti Theft Bicycle Chain Lock, 2.62/3.2/4.27/5/6Ft Long, High Security Resettable, Suitable for Bike, Scooter, Door, Gate, Fence, 4/6mm Thick
The NDakter 5-digit combination chain lock excels when length and security are priorities, especially for securing multiple items or larger structures. Its durable alloy steel construction and scratch-proof coating make it resistant to cutting and weathering, outperforming shorter or less robust locks like the Kryptonite Keeper 712 in terms of versatility. The range of lengths from 2.62 to 6 feet ensures flexibility, though the heavier 6mm variant may be less portable. Its keyless, resettable combination adds convenience, but the default code ‘00000’ should be changed immediately to prevent security lapses. This lock suits those who need long, high-security locking options** for bikes, gates, or fences. Its bulk and weight can be drawbacks for daily commuters seeking lightweight solutions.
Pros:- High security with 5-digit resettable combination
- Durable alloy steel with scratch-proof coating
- Long lengths for versatile locking multiple items or large objects
Cons:- Heavy weight, less portable for daily use
- Default code should be changed for security
- Large size may be cumbersome to carry
Best for: Homeowners and outdoor enthusiasts securing multiple items or large structures
Not ideal for: Urban cyclists who prefer compact, lightweight locks for daily riding
- Material:Alloy Steel, Zinc
- Length:2.62/3.2/4.27/5/6 feet
- Thickness:4/6 mm
- Default Code:00000
- Weight:About 1.45 pounds
Our verdict“This chain lock makes the most sense for users needing extended length and high security for outdoor or large-scale locking needs.”
Master Lock U-Lock Keyed Bike Lock, 7-1/4-inch Anti-Theft Device, 8320D
The Master Lock 8320D offers reliable, heavy-duty security with a hardened steel body and vinyl coating that shields your bike from scratches. Its 7-1/4-inch width provides more locking flexibility than smaller models like the B0D3KQ67MC, but its limited shackle length can restrict where and how you can lock your bike to certain fixtures. The keyed system is straightforward, but less convenient than combination options for some users. The included mounting bracket and two keys add to its practicality, yet its heaviness might be inconvenient for daily commuters or those with limited carrying capacity. This lock suits those seeking robust, outdoor-ready security for bikes or equipment, especially if key management isn’t an issue.
Pros:- Heavy-duty steel construction for high security
- Resists cutting, sawing, and prying attacks
- Includes mounting bracket and two keys for convenience
Cons:- Limited shackle length restricts locking options
- Keyed lock may be less convenient than combination alternatives
- Heavy weight can be cumbersome for daily carrying
Best for: Bicycle owners who prioritize strong, keyed security for outdoor storage
Not ideal for: Urban riders desiring lightweight, easy-to-carry locks with longer shackles
- Lock Body Width:7-1/4 inches
- Shackle Length:9 inches
- Material:Hardened steel, vinyl coating
- Included Components:U-lock, mounting bracket, 2 keys
Our verdict“This lock is best for users needing a rugged, keyed U-lock for outdoor security against theft.”
How We Picked
I compared these electric bike locks by the job they can realistically do: securing the frame to a fixed object, adding wheel coverage, and fitting a rider’s daily carrying and access habits. I gave more weight to rigid U-locks and chains for primary security than to cable-only designs, since a cable’s reach and convenience do not make it equivalent to a rigid lock. Length, included cable or mounting hardware, key versus combination access, and the practical differences between the listed versions also shaped the comparison.
The ranking favors options with a useful balance of locking coverage, everyday usability, and clear role, rather than treating every heavy-duty label as proof of equal protection. A longer chain can be easier to position but takes more space to carry; a compact U-lock is less adaptable but can work well when its opening fits the frame and anchor. I also distinguish near-duplicate listings and avoid assuming unprovided security certifications, material grades, or performance claims. That puts versatile primary locks ahead of cable-first choices, while leaving room for convenience-focused and specialized picks.
| electric bike lock | Lock type |
|---|---|
| Weogine Heavy-Duty Bicycle Cha | Key lock |
| Kryptonite Keeper 712 Combo Bi | Resettable combination |
| Titanker Heavy Duty Bicycle Lo | Key lock |
| Corki Heavy Duty Bike Lock wit | U-lock with cable |
| Sportneer 5-Digit Combination | Resettable combination |
| NDakter Heavy Duty Anti-Theft | — |
| Sportneer Heavy Duty Bike U Lo | — |
| Electric Scooter Lock with 36. | Scooter lock |
| Master Lock 6 ft Cable Bike Lo | Resettable combination lock |
| Kryptonite Keeper 712 Bike Cha | Hardened deadbolt with disc-style cylinder |
| Heavy-Duty Chain Lock for Bike | — |
| Heavy Duty Combo Bike U Lock w | — |
| NDakter Heavy Duty Combo Bike | — |
| NDakter Bike Lock | — |
| Master Lock U-Lock Keyed Bike | — |
Factors to Consider When Choosing Electric Bike Locks
Choosing among electric bike locks means matching the lock to your parking routine, your bike’s frame, and the anchors you can actually use. I’d treat the product type as a starting point, then check fit and carrying practicality before relying on a lock for a valuable e-bike.
Choose the lock type for the place you park
Start with the fixed objects available at your regular stops. A U-lock is a strong candidate when a rack or post fits inside its opening, while a chain can wrap around larger or awkwardly placed anchors. Cable locks are convenient for quick stops and extra wheel coverage, but I would not make a cable the sole security measure for an e-bike left unattended for a long stretch. A combination of rigid lock and cable can cover more parts of the bike, though it adds weight and bulk. Check the anchor itself too: a sturdy lock attached to a loose signpost does not solve the weak-anchor problem.
Measure the route from frame to anchor
Lock length is useful only if it reaches a secure anchor while leaving little room for leverage. Before buying, measure the path from a frame tube to your usual rack, including the space needed to pass the lock around the anchor. A longer chain can help with oversized racks but may be harder to carry and may leave extra slack if poorly positioned. A shorter U-lock can be easier to handle, but it may not fit around a thick post or wide e-bike frame. Avoid choosing by the listed length alone; the lock’s opening shape and the location of your frame tubes matter just as much.
Secure the frame before adding a wheel
When only one lock fits your budget or carrying limit, prioritize attaching the frame to a fixed object rather than locking a removable wheel by itself. If you use a second cable or a U-lock-and-cable set, route the secondary piece through a wheel and connect it to the main lock where possible. Many e-bikes have removable batteries and accessories, so check whether the battery can be removed or secured separately when parked. Don’t let a cable’s extra reach tempt you to use it in place of a rigid primary lock. A secure routine should cover the frame first and then address wheels and detachable components.
Balance security with weight you will carry
A lock that stays at home offers no protection at the rack, so carrying comfort is a practical security factor. Chains and combined U-lock-and-cable setups can provide flexible coverage, but they take more room and may feel cumbersome on a daily commute. A compact U-lock can be easier to mount or pack, though its limited opening may not work at every stop. Consider where the lock will ride, whether a mounting bracket fits your frame, and if the lock could interfere with a bottle cage or battery access. For longer errands, a heavier primary lock may be worth carrying; for short, supervised stops, a lighter secondary option can fill a different role.
Pick keys or a combination based on your routine
Keyed locks avoid remembering a code, but you need to keep a key accessible and have a plan for spares. Combination locks remove the key from your daily carry, which can be handy if several people use the same bike, but the code must remain memorable and private. Resettable combinations are useful when you want to change a code, though buyers should confirm the reset process and keep the instructions somewhere safe. Think about gloves, low light, and rushed departures: small dials or keyways can be less pleasant to operate in poor conditions. Convenience should support a locking habit, not become a reason to leave the bike unsecured.
Treat product labels as claims, not a security plan
Terms such as “heavy duty” do not tell you how a lock performs against a specific attack or how it compares with a tested security standard. Look for clearly stated construction details and independently verifiable certification when those details are available, and avoid inferring protection from thickness or length alone. A thick-looking chain can still be inconvenient if it is too short for your parking spots, while an appropriately sized U-lock may be useless if it cannot fit around your frame and anchor. Match the lock to the theft risk, how long the bike will be left, and the value of the components exposed. For a high-value e-bike parked overnight in public, consider layered security rather than relying on one lock type.
Frequently Asked Questions
Is a cable lock enough for an electric bike?
I would treat a cable lock as a convenience or secondary layer rather than the only lock for an unattended e-bike. Its reach can make it handy for securing a wheel or for short stops where you remain nearby, but the longer cable does not provide the same rigid barrier as a U-lock or substantial chain. If you choose a cable, pair it with a primary lock that secures the frame to a fixed anchor. The Master Lock cable in this roundup offers combination access and six feet of reach, but its format makes it a different security choice from the chain and U-lock options. Your parking duration and location should guide whether that tradeoff is acceptable.
Should I choose a chain or a U-lock for my e-bike?
Choose a chain if your regular anchors are bulky, oddly positioned, or too far from the frame for a compact lock to reach. A U-lock makes more sense when you can fit its opening around both the frame and a secure anchor, and you want a more compact form to carry. Neither style wins in every parking situation: chains can be cumbersome, while U-locks can be restrictive on thick posts or awkward frame shapes. Several options here combine a U-lock with a cable, offering extra wheel reach without making the cable the primary lock. If possible, measure your usual parking setup before deciding.
Do I need a separate lock for my e-bike’s battery?
A frame lock does not automatically secure a removable battery, so check your bike’s battery design and how it is retained. If the battery comes off easily, taking it with you is often the simplest way to reduce exposure when the bike is parked for a while. If you leave it installed, use the bike’s built-in battery lock where available and consider whether a secondary lock can cover the battery without interfering with the frame lock. Don’t route a chain or cable in a way that blocks safe removal or puts pressure on the battery housing. The right plan depends on whether your battery is integrated, removable, and convenient to carry.
How do I know whether a chain or U-lock will fit my bike and rack?
Measure the actual route around your frame tube and the rack or post, not just the distance between the two. For a U-lock, check the internal opening dimensions and allow enough room for the frame and anchor while limiting unused space. For a chain, account for the length consumed by wrapping around the anchor and avoid leaving a large loose loop. E-bike frames can have wide tubes, integrated batteries, and accessories that make familiar locking points harder to reach. If the seller does not provide a measurement you need, contact the seller or choose a lock with a clearly stated fit before relying on it.
Is a five-digit combination lock better than a keyed lock?
It depends on which inconvenience you are more likely to manage well. A combination lock means there is no key to carry or misplace, and a resettable code can be convenient for shared use. A keyed lock avoids remembering a code, but you will need to keep a key available and consider where a spare belongs. Combination dials may be awkward with gloves or in low light, while a keyway can also be fiddly in poor conditions. Neither access style makes a lock inherently more secure; choose the one that helps you lock the bike consistently and follow the maker’s instructions for setting or storing access details.
Conclusion
For the broadest mix of reach and chain-style flexibility, my best overall pick is the Kryptonite Keeper 712 four-foot chain, listed twice in this roundup as the same named model. The best value by function is the Titanker three-foot chain for riders who want a straightforward keyed option and can work with its shorter reach. For a premium-style setup focused on versatility, I’d choose the NDakter U-lock with a six-foot cable, while remembering that the cable is a secondary layer. Beginners who prefer not to manage keys may favor the Sportneer five-digit combination chain; riders needing easy reach for brief stops can look at the Master Lock cable as a supplemental lock, not their only defense. If you park at varied anchors, prioritize a longer chain; if you have a compatible rack and want a more compact primary lock, choose a U-lock-and-cable combination. Match the lock to where you park, then secure the frame to a fixed object every time.
Halloween Picks
halloween
As an affiliate, we earn on qualifying purchases.
