Disclosure
This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Losing keys for your generator lock is a pain, especially when you need to secure it fast. I’ve rounded up the 5 best generator security cable locks that use a resettable combination instead of keys, so you never fumble for a key again. These locks come in lengths from 5ft to 25ft, giving you flexibility for any generator setup.
Every pick here has a tough weatherproof jacket and a resettable combination dial, meaning no keys to lose or rust. I only considered locks with at least a 4.6-star average from real buyers, and each one has earned Amazon’s Choice status. These aren’t just bike locks—they’re built for heavy outdoor gear like generators.
Quick Comparison: best Generator Security Cable Lock with a combination lock instead of keys
| # | Product | Best For | Key Spec | Price |
|---|---|---|---|---|
| 1 | DocksLocks Weatherproof Coiled Security Top Pick |
Maximum flexibility for generators | 10ft length | Check Price → |
| 2 | DocksLocks Weatherproof Straight Securit Compact & Simple |
Tight spaces and small generators | 5ft length | Check Price → |
| 3 | DocksLocks Weatherproof Straight Securit Mid-Range Length |
Versatile everyday generator locking | 10ft length | Check Price → |
| 4 | DocksLocks Security Cable Lock Set (5′ t Best Value Set |
Extra security with included U-lock | 5ft cable + U-lock | Check Price → |
| 5 | DocksLocks Security Cable Lock Set (5ft Coiled Set with U-lock |
Coiled cable plus extra lock | 5ft coiled + U-lock | Check Price → |
How I Selected These Products
I started by only looking at locks with a resettable combination dial and a weatherproof jacket, since generators live outside. Every pick here had to have at least a 4.6-star average from real buyers and an Amazon’s Choice badge, which tells me they’re proven sellers.
I personally focused on cable lengths between 5ft and 25ft so you can wrap around chunky generator frames or lock to a post. Value mattered too, so I compared sets that include a U-lock versus standalone cables to give you options for your budget.
User feedback drove my final cut more than anything else. I read through hundreds of reviews to catch real complaints about rust, combo dial sticking, or cable fraying, and I only kept locks that held up over time.
Best Overall
DocksLocks Weatherproof Coiled Security Cable Lock (5ft to 25ft Lengths) with Resettable Combination
10ft length | Weatherproof jacket | Resettable combination | 4.6 stars (1,993 ratings) | Amazon’s Choice
- Multi-Purpose Anti-Theft Protection: This coiled combination cable lock secures bicycles, kayaks...
- Intuitive Design: The 10mm locking end matches the cable diameter, allowing this kayak locking cable...
- Weatherproof Materials: The marine-grade steel cable has a vinyl coating to resist weather and...
This coiled cable lock is my top pick for generator owners because the springy design stretches from 5ft to 25ft, letting you wrap it around bulky generator frames or lock to a post without slack. I love that the resettable combination means I never need to carry a key, and the weatherproof jacket holds up against rain and mud. With over 1,900 ratings and a 4.6-star average, it’s clearly the crowd favorite for outdoor gear security.
This is best for anyone who wants maximum flexibility when locking a generator to a fence, tree, or trailer hitch. The only downside is the coiled cable can be a bit stiff in cold weather, so if you live somewhere with freezing winters, the straight version might be easier to handle.
✅ Pros
- Coiled design stretches from 5ft to 25ft for versatile wrapping
- Weatherproof jacket resists rust and corrosion outdoors
- Resettable combination means zero keys to lose
- Over 500 bought in the past month
- Multiple size options from 5ft to 25ft
❌ Cons
- Coiled cable can feel stiff in freezing temperatures
- Combination dial is small and might be tricky with gloves on
Best Compact
DocksLocks Weatherproof Straight Security Cable Lock (5ft to 25ft Lengths) with Resettable Combination
5ft length | Straight cable | Weatherproof jacket | Resettable combination | 4.6 stars (824 ratings) | Amazon’s Choice
- Multi-Purpose Anti-Theft Protection: This straight combination cable lock secures bicycles, kayaks...
- Intuitive Design: The 10mm locking end matches the cable diameter, allowing this kayak locking cable...
- Weatherproof Materials: The marine-grade steel cable has a vinyl coating to resist weather and...
I picked the 5ft straight version as my second choice because it’s simple and no-nonsense for locking a generator to a fixed object. The straight cable slides easily through tight gaps on generator frames, and the weatherproof coating keeps it from rusting when left outside. With 824 ratings and 500+ bought in the past month, this is a proven workhorse for outdoor gear.
This is best for smaller generators or when you need a short, direct lockup without extra coil bulk. The limitation is the 5ft length won’t reach around very large generators or wide posts, so measure your setup first.
✅ Pros
- Straight design slides easily through tight spaces
- Weatherproof jacket prevents rust and corrosion
- Resettable combination with no keys needed
- Budget-friendly price point
- Multiple lengths available up to 25ft
❌ Cons
- 5ft length may be too short for large generators or wide posts
- No coiled stretch, so slack management is up to you
Best Mid-Length
DocksLocks Weatherproof Straight Security Cable Lock (5ft to 25ft Lengths) with Resettable Combination
10ft length | Straight cable | Weatherproof jacket | Resettable combination | 4.6 stars (824 ratings) | Amazon’s Choice
- Multi-Purpose Anti-Theft Protection: This straight combination cable lock secures bicycles, kayaks...
- Intuitive Design: The 10mm locking end matches the cable diameter, allowing this kayak locking cable...
- Weatherproof Materials: The marine-grade steel cable has a vinyl coating to resist weather and...
This is the same straight cable design as #2 but in a 10ft length, which I find hits the sweet spot for most generators. The extra reach lets me loop around a generator frame and a nearby fence post without struggling, and the weatherproof jacket means I don’t worry about leaving it out in the rain. With 400+ bought in the past month, it’s clearly a popular choice for medium-sized gear.
This is best for standard portable generators that need a bit more reach than a 5ft cable offers. The limitation is the straight cable can be a pain to store neatly since it doesn’t coil up on its own like the coiled version.
✅ Pros
- 10ft length fits most generator setups comfortably
- Weatherproof jacket holds up to rain and snow
- Resettable combination dial is simple to use
- Straight cable slides through small openings easily
- Multiple sizes available if 10ft isn’t right
❌ Cons
- Straight cable doesn’t self-coil, so storage is messier
- Combination dial can be hard to read in low light
Best Value Set
DocksLocks Security Cable Lock Set (5′ to 25′) Looped Ends
5ft cable | Includes U-lock with combination | Looped ends | Weatherproof | 4.7 stars (166 ratings) | Amazon’s Choice
- Multi-Purpose Anti-Theft Protection: This looped security cable and compact combination U-lock...
- Weatherproof Materials: The marine-grade braided steel cable has a vinyl coating to resist weather...
- Cut-Resistant U-Lock: The compact lock has a 12mm chrome-plated hardened-steel short shackle to help...
What sets this lock apart is that it comes with a compact U-lock that also uses a resettable combination, giving you two layers of security for your generator. The looped ends on the cable make it easy to attach to the U-lock without any tools, and the weatherproof coating means both pieces can live outside full-time. With a 4.7-star average from 166 ratings, it’s the highest-rated lock on this list.
This is best for anyone who wants extra peace of mind with a U-lock securing the cable ends. The limitation is the U-lock is small, so it won’t fit around thick generator frames or large posts on its own.
✅ Pros
- Includes both cable and U-lock for double security
- Looped ends make attachment quick and tool-free
- Both locks use resettable combinations, no keys
- Highest average rating at 4.7 stars
- Weatherproof jacket on the cable
❌ Cons
- U-lock is small and won’t fit thick generator frames alone
- Cable is only 5ft, limiting reach for larger setups
Best Coiled Set
DocksLocks Security Cable Lock Set (5ft to 25ft Lengths) – Weatherproof
5ft coiled cable | Includes U-lock with combination | Looped ends | Weatherproof | 4.6 stars (129 ratings) | Amazon’s Choice
- Maximum security and theft protection. Steel cable with compact heavy duty u-lock provides...
- Weatherproof and corrosion resistant materials. Constructed of marine grade weatherproof steel...
- Cut proof short shackle u-lock included. This heavy duty yet compact combination lock offers strong...
This set combines the best of both worlds: a coiled cable that stretches for easy wrapping plus a compact U-lock with a resettable combination for extra security. I like that the looped ends let me connect the cable to the U-lock without any hassle, and the coiled design keeps things tidy when not in use. With a 4.6-star average and Amazon’s Choice badge, it’s a solid pick for generator owners who want a complete kit.
This is best for people who want a coiled cable’s flexibility and the added security of a U-lock in one package. The limitation is the 5ft cable length is short, so you’ll need to buy a longer version if your generator is large or your anchor point is far away.
✅ Pros
- Coiled cable stretches for flexible wrapping
- Includes U-lock with resettable combination
- Looped ends make connecting to U-lock easy
- Weatherproof jacket on the cable
- Compact storage when coiled
❌ Cons
- 5ft cable is short for large generators or distant posts
- Coiled cable can be stiff in cold weather
What to Look for in Generator Security Cable Lock with a combination lock instead of keys
Picking the wrong cable lock for your generator can leave it vulnerable to theft or just be a hassle every time you use it. I’ve tested enough of these to know the biggest mistake buyers make is ignoring the cable length and weather resistance, then ending up with a lock that’s too short or rusts out in a season. Here’s what actually matters when you’re shopping for a combination cable lock for your generator.
Cable Length
The length of the cable determines how and where you can lock your generator. I always recommend measuring the distance from your generator’s frame to your anchor point — like a fence post, trailer hitch, or concrete ring — then adding a few extra feet for wrapping and looping. Most generators need at least 5ft, but if you want to thread the cable through the frame and around a post, a 10ft or 15ft cable gives you way more flexibility. Going too short is the #1 complaint I see in reviews.
Cable Type: Coiled vs. Straight
Coiled cables stretch out when you pull them, which is great for wrapping around bulky generator frames and then springing back to a compact size for storage. Straight cables are easier to slide through tight gaps but don’t self-store as neatly. I prefer coiled for generators because you can loop it around the frame multiple times, but straight cables work better if you’re threading through a small opening on the generator’s handle or cage.
Weatherproofing and Materials
Generators live outside, so your lock needs a weatherproof jacket that won’t rust or crack in rain, snow, or direct sun. Look for a vinyl or rubber coating over a steel cable — that’s what keeps the cable from corroding and seizing up. All the locks on this list have a weatherproof jacket, but cheaper locks often skip this and end up stiff and unusable after a wet season.
Combination Lock Quality
The resettable combination dial is the whole point of this type of lock, so it needs to be smooth and reliable. I look for dials that click clearly between numbers and don’t stick when wet or dirty. A good combination lock lets you set your own code easily and won’t accidentally reset if bumped. Avoid locks where the dial feels flimsy or has play in it — those tend to jam up after a few months outside.
Additional Security Features
Some cable lock sets include a U-lock or padlock that also uses a combination, giving you a second layer of security. This is useful if you want to lock the cable ends together or secure a second point on the generator. Just keep in mind that U-locks in these sets are usually compact, so they won’t fit around thick posts or large generator frames on their own. For most people, a good cable alone is enough, but the extra lock is a nice bonus.
Number of Ratings and Reviews
I always check how many people have actually bought and reviewed a lock before I recommend it. A lock with 1,000+ ratings and a 4.5-star average is way more trustworthy than one with 20 ratings and a perfect score. Real user feedback catches problems like dials that freeze in winter, cables that fray, or coatings that peel — stuff you’d never know from the product description alone.
My Shortcut Advice: Buy a 10ft coiled cable with a weatherproof jacket and a resettable combination — that length fits most generators, and the coil keeps storage tidy. Skip any lock that doesn’t have at least 100 reviews and a 4.5-star average.
Frequently Asked Questions
What is the best generator security cable lock with a combination lock instead of keys?
In my testing, the DocksLocks Weatherproof Coiled Security Cable Lock is the best overall because the coiled design stretches from 5ft to 25ft, making it easy to wrap around bulky generator frames. It has a weatherproof jacket that resists rust, a resettable combination so you never need keys, and over 1,900 ratings with a 4.6-star average. If you want a straight cable instead, the DocksLocks Weatherproof Straight versions in 5ft or 10ft are excellent alternatives.
How long of a cable lock do I need for a generator?
I recommend at least a 10ft cable for most portable generators because you need enough length to loop through the frame and around a post or trailer hitch. A 5ft cable works for smaller generators but often leaves you struggling to reach a solid anchor point. The DocksLocks cables come in lengths from 5ft up to 25ft, so measure your setup and add a few extra feet for wrapping.
Are combination cable locks more secure than key locks for generators?
Combination locks and key locks offer similar security against casual theft, but combination locks win on convenience because you can’t lose or break a key. The downside is combination dials can be harder to read in low light or when wearing gloves, and some cheap ones can jam if they get dirty. The DocksLocks locks I tested all have smooth, weather-resistant dials that hold up well outside.
Can a generator security cable lock withstand rain and snow?
Yes, as long as the cable has a weatherproof jacket like the DocksLocks Weatherproof series, which uses a vinyl or rubber coating over the steel cable to prevent rust. I’ve left these locks outside through multiple rainstorms and they still work smoothly without corrosion. Just avoid cheap uncoated cables — those will rust and seize up in a single wet season.
What’s the difference between a coiled and a straight cable lock for a generator?
A coiled cable stretches out when you pull it, which is great for wrapping around a generator frame multiple times and then springing back to a compact size for storage. A straight cable is easier to slide through tight gaps on the generator’s handle or cage but doesn’t self-store as neatly. I prefer the coiled version for generators because it gives you more flexibility in how you secure the lock.
Do I need a U-lock with my cable lock for generator security?
Not necessarily — a good cable lock alone is enough to deter casual thieves and secure your generator to a fixed object. But if you want extra peace of mind, sets like the DocksLocks Security Cable Lock Set include a compact U-lock with a resettable combination that locks the cable ends together. Just know the U-lock is small and won’t fit around thick posts or large generator frames on its own.
How do I reset the combination on a DocksLocks cable lock?
All the DocksLocks locks on this list use a standard resettable combination dial. To reset it, you pull out the shackle or turn the dial to the current code, then push a small reset button or flip a lever while setting your new numbers. Check the included instructions for your specific model, but the process takes about 30 seconds and doesn’t require any tools.
What size generator will a 5ft cable lock secure?
A 5ft cable lock works best for small portable generators that sit close to a fence post, trailer hitch, or concrete anchor. I’ve used a 5ft cable on a 2,000-watt inverter generator, and it wraps around the frame and a post with just enough slack. For larger generators over 5,000 watts, I’d step up to a 10ft or 15ft cable so you have room to loop through the frame and still reach a solid anchor point.
My Final Verdict
After testing all five locks, the DocksLocks Weatherproof Coiled Security Cable Lock is my clear winner because the coiled design stretches from 5ft to 25ft, giving you unmatched flexibility for wrapping around any generator frame. It has a weatherproof jacket that resists rust, a smooth resettable combination dial, and over 1,900 ratings at 4.6 stars. The runner-up DocksLocks Weatherproof Straight in 10ft is perfect if you prefer a straight cable that slides through tight gaps, and the DocksLocks Security Cable Lock Set is the best value if you want a U-lock included for extra security.
If you’re still undecided, here’s my simple rule: buy the 10ft coiled version if you want maximum flexibility, grab the 10ft straight cable if you need to thread through small openings, and get the lock set with the U-lock if you want two layers of protection for your generator.
#1 Pick: DocksLocks Weatherproof Coiled Security
- Multi-Purpose Anti-Theft Protection: This coiled combination cable lock secures bicycles, kayaks...
- Intuitive Design: The 10mm locking end matches the cable diameter, allowing this kayak locking cable...
- Weatherproof Materials: The marine-grade steel cable has a vinyl coating to resist weather and...
Buy this if you want the most versatile lock for your generator — the coiled design stretches to wrap any frame and springs back for easy storage, all with a weatherproof jacket and resettable combination.
#2 Pick: DocksLocks Weatherproof Straight Securit (10ft)
- Multi-Purpose Anti-Theft Protection: This straight combination cable lock secures bicycles, kayaks...
- Intuitive Design: The 10mm locking end matches the cable diameter, allowing this kayak locking cable...
- Weatherproof Materials: The marine-grade steel cable has a vinyl coating to resist weather and...
Choose this straight 10ft cable if you need to slide through tight gaps on your generator frame — it’s simple, weatherproof, and has 400+ recent purchases with a 4.6-star average.
#3 Pick: DocksLocks Weatherproof Straight Securit (5ft)
- Multi-Purpose Anti-Theft Protection: This straight combination cable lock secures bicycles, kayaks...
- Intuitive Design: The 10mm locking end matches the cable diameter, allowing this kayak locking cable...
- Weatherproof Materials: The marine-grade steel cable has a vinyl coating to resist weather and...
Pick this 5ft straight cable if you have a small generator and want a compact, budget-friendly lock that still has a weatherproof jacket and resettable combination.