If you are running a 36V system and want a solid 20Ah battery without paying a premium, the LOCKBUS 36V 20Ah pack is one of the cheapest options available on Amazon right now. The pack delivers 720 watt-hours of usable energy, a 30A BMS, and supports motors up to 800 watts. Check current pricing on Amazon.
At 21 cents per watt-hour, this battery competes well with other inexpensive 36V packs. According to LOCKBUS, the battery works for everyday commuting as well as DIY e-bike and scooter projects. Take a look at the comparison table to see how it compares against other 36V 20Ah options.
Specs, BMS, and Build Quality
The LOCKBUS 36V 20Ah battery is about 8.15 x 4.72 x 2.75 inches and weighs 6.6 pounds. Compared to many other 20Ah batteries in the 36V class, this is a compact design that fits well on smaller e-bike frames.
According to LOCKBUS, the battery uses Grade-A lithium-ion cells with minimal self-discharge. The battery life exceeds 1000 charge cycles, which means you will likely get multiple years of daily use before noticing any capacity loss. The housing is a standard PVC outer shell, similar to other products in this price range.
The built-in 30A BMS protects against overcharging, over-discharging, overcurrent, overvoltage, short circuits, and temperature issues. One advantage of the 30A active BMS is balanced charging across all cell groups. This balanced charging helps the battery reach its 1000-cycle lifespan, since no single cell group gets overworked.
The design is intended to work with existing lead-acid battery mounts. If you are replacing a lead-acid pack and the dimensions match, you can swap directly to this lithium battery. The weight savings alone are significant - lead-acid equivalents in this class typically weigh twice as much.
LOCKBUS supplies a 42V 2A charger along with XT60 and T-plug connectors. The 2A charger is standard for budget battery packs. See current pricing on Amazon.
What Amazon Customers Have Said
Since this is a fairly new listing, it does not have many Amazon reviews yet. As of late June 2026, there is not enough customer feedback to draw strong conclusions about long-term durability.
At 21 cents per watt-hour, the early feedback is worth watching. Budget 36V packs in this range tend to get mixed reviews over time, with battery management and connector quality being the most common pain points. LOCKBUS does offer a 24-hour response time on support inquiries, which is decent for a budget brand, and their stated commitment to customer service is a positive sign.
We will update this section as more buyers share their experience. For now, the price per watt-hour is undeniably competitive, and the Grade-A cell claim gives some confidence in the build quality even without a large review base to back it up yet. If early reviews trend positive, this battery could become a solid recommendation for budget 36V builds.
Range and Real-World Performance
With 720 watt-hours of energy, this battery should cover most daily commuting needs on a 36V system. A typical 36V hub motor running at 350W average draw would give roughly two hours of continuous operation, translating to 25 to 35 miles depending on terrain, rider weight, and throttle use.
For a lower-power setup like a 250W city bike, range could exceed 30 to 40 miles. For 500W to 800W motors, expect shorter range but still enough for a full day of casual riding. The 30A BMS handles the higher current draw from 800W motors well, so you are not limited by the battery management system even at the top end of the supported range.
The battery also works with 36V electric scooters, tricycles, and other 36V devices. Range varies by motor draw, but the 720Wh capacity provides solid run time for most urban uses. If you are using it for a scooter, expect similar range numbers depending on your riding style and average speed. For most commuters, this battery will cover a round trip of 15 to 20 miles without needing a mid-day charge. Check the comparison table to see how this battery compares against other 36V options.
Who Is This Battery For?
This battery is a solid choice for anyone transitioning from lead-acid in a 36V system who does not want to spend too much.
Good for:
- Riders with 36V e-bikes wanting an affordable lithium upgrade from lead-acid
- City commuters needing 20 to 35 miles of range on a single charge
- DIY builders using 36V motors up to 800W
- Anyone wanting a compact battery for smaller e-bike frames
Not great for:
- Riders needing a 48V or 52V system
- Those who want a battery with hundreds of reviews
- Riders needing high power above 800W
- Anyone with specific form factor requirements like downtube or shark pack
If you need a dependable 36V battery for daily commuting without spending a lot, this pack delivers on the essentials without extra frills.
Frequently Asked Questions
What voltage is this battery?
36V nominal. Compatible with any motor or controller rated for 36V systems.
What is the actual capacity?
720 watt-hours, calculated as 36V multiplied by 20Ah.
Which motors does it support?
Motors from 200W to 800W that run on 36V, including most hub motors, mid-drives, and scooter motors in this voltage class.
How long does charging take?
The included 42V 2A charger takes several hours for a full charge from empty. A higher amperage charger would reduce that time. If you ride daily, consider getting a faster charger to reduce downtime between rides.
Is it waterproof?
The PVC housing provides splash protection. It is not rated for submersion, so avoid submerging it in water or riding through deep puddles regularly.
What connectors are included?
XT60 and T-plug connectors come with the battery. These are standard for most e-bike controllers and DIY builds. Adapters for other connector types are readily available online.
Summary
The LOCKBUS 36V 20Ah battery offers solid value for anyone running a 36V system on a budget. At 21 cents per watt-hour, it competes well with other budget 36V packs, and the Grade-A cells and 30A BMS provide a good foundation for everyday riding. The compact size makes it a practical choice for smaller e-bike frames where space is tight. If you are upgrading from lead-acid or building a 36V commuter and want reasonable capacity without spending a premium, the LOCKBUS pack is worth considering. It delivers exactly what the specs suggest without any surprises. See current pricing on Amazon.
