36V systems may have lost their luster, but for many commuters, they remain the best option, and the LOCKBUS 36V 20Ah pack is among the least expensive way to fuel one. LOCKBUS provides 720Wh of usable energy, a 30A BMS and supports motors up to 800W at approximately 21 cents per watt-hour. That is an extremely competitive cost per watt-hour for a 36V / 20Ah pack. Making it an ideal upgrade route for those looking to replace an old 36V build. click here to view pricing on Amazon
Look at the comparison table to see how it stacks up compared to other 36V 20Ah options.
For a 36V system specifically, 720Whs represents a generous amount of Range. While this is more commonly seen in 48 v packs, having this level of Range on a 36V system at such a low price point represents a genuine increase in Range for commuters and for older conversions (without rewiring to a different voltage). Check current pricing on Amazon.
Specs, BMS, and Build Quality
According to LOCKBUS the 36V 20Ah measures approximately 8.15 x 4.72 x 2.75 inches and weighs approximately 6.6 lbs. When comparing this to other 36V 20Ah packs, this represents a very compact design that should fit on smaller frames.
LOCKBUS states that the battery contains grade a lithium-ion cells that experience minimal self-discharge. According to LOCKBUS the battery's rated life exceeds 1000 charge/discharge cycles, providing numerous years of daily usage prior to experiencing notable losses in capacity. The housing is a standard PVC shell, similar to many other products within the same price Range.
The built-in 30A BMS protects against over-charging, under-charging, over-current conditions, over-voltage conditions, short-circuiting and temperature-related issues. Active balancing ensures each cell group is evenly balanced allowing the entire pack to achieve its expected service life of greater than 1000 charge/discharge cycles (as opposed to the individual cells becoming exhausted due to excessive wear).
The design is compatible with lead acid mounts. Therefore, if you are replacing your lead acid pack and the sizes match you can simply switch to lithium.
There is considerable weight savings when switching from lead-acid. Lead-acid packs in this class generally weigh twice as much as lithium packs.
LOCKBUS has provided a 42V dc 2A charger along with XT60 and T-plug connectors.
What Amazon Customers Have Said
As of june 28th, 2026, this product is relatively new and therefore there aren't enough customer reviews yet to provide insight into its Performance over longer periods of time.
While the price per watt-hour of is clearly competitive, budget-priced 36V packs in this category often receive a mix bag of reviews. As with most budget priced products the largest complaint area tends to be related to the quality of both the BMS and the connectors.
In addition to offering a competitive price per watt-hour, LOCKBUS offers a response time of less than 24 hours for support inquiries. This is somewhat better than what i've experienced from most budget brands.
I believe that if early reviews indicate that LOCKBUS has produced a high-quality product then this would likely be my top choice for those seeking a low-cost solution for their 36V builds.
Range and Real-World Performance
Based upon estimated ranges from a variety of sources (including ebike forums), the estimated usage time/Range of this pack would be:
- with a typical hub motor set-up drawing approximately 350 watts average usage time is expected to be about two hours. Based upon varying terrain, rider weight, etc., estimated ranges vary between approximately 25-35 miles.
- with low-power City bike motor setups (drawing approximately 250 watts average usage time) estimated ranges can exceed 30-40 miles.
- with moderate power settings (drawing approximately 500-800Watts) estimated ranges will be shorter but still sufficient for an entire days use in casual riding scenarios.
Additionally, it appears that the BMS does not appear to be the limiting factor for the higher end motors as it only supplies up to 30A. Therefore, if you plan to use your ebike or conversion with motors in excess of 800Watts you will not encounter any issues with regard to amperage supply.
It also functions as a suitable replacement for 36V scooters, trikes, and other applications utilizing a 36V system. Depending on usage patterns (draw), estimates vary for mileage covered during a cycle. However, the majority of commuters will easily complete a daily round-trip commute of approximately 15-20 miles without requiring a recharge during lunchtime. Review our comparison chart for information on alternative 36V options.
Who Is This Battery For?
This product is ideal for individuals converting from lead acid batteries in their existing 36V ebike who wish to transition to lithium without breaking the bank.
Good For
- any ebike Riders wishing to make an economical transition from lead acid batteries in their existing 36V ebike
- City commuters who require daily commute distances of between 20-35 miles
- DIY builders utilizing 36V motors up to a maximum rating of 800W
- small frame ebikes
Not Great For
- Riders seeking a system capable of operating at either 48V or 52V
- Riders who prefer purchasing products with substantial numbers of reviews
- Riders requiring higher power outputs than 800W
- Riders with specific mounting requirements (e.g., downtube/shark)
If you're a regular ebiker seeking reliable power at an affordable rate for your daily commute without breaking the bank, then LOCKBUS' budget-friendly lithium-ion pack meets all your expectations regarding specifications and cost. view current pricing on Amazon .
Browse more ebike battery reviews for other options.
Frequently Asked Questions
What voltage does this battery operate on?
Operates at a nominal voltage of 36Vs and compatible with any motor/controller pair designed for use with a system operating at either 36Vs.
What is the actual capacity?
Actual capacity is based on a calculation of (battery nominal operating voltage x total available amphere hours = total available watt/hours). Hence: (36V x 20Ah = 720Wh)
what types of motors will it support?
Will support motors ranging in power output from approximately: 200W @ max continuous load to approximately: 800W @ max continuous load (includes most common hub motors, mid drives and scooter motors in this approximate power class).
How long does charging take?
Charging time will depend on several factors including. Charger type/wattage. Total available capacity of the charger. Number of cells. And ambient temperature. Assuming you are using the supplied 42-volt dc/2-amp charger and assuming ambient temperatures are near normal room temperatures (and assuming full discharge). We estimate charging times will take anywhere from several hours up to possibly five hours.
waterproofness?
PVC housings provide splash protection only - not waterproofing - do not submerge in water!
connectors supplied?
LOCKBUS provides XT60 connectors and T-plug connectors with purchase of each unit - compatible with most common controllers & DIY wiring configurations - also offers adaptors for other connector types.
Summary
LOCKBUS' 36V / 20Ah pack presents a compelling value proposition for budget-conscious users seeking reliable lithium-ion battery options for their existing systems. At .21 cents/watt-hour, LOCKBUS is competitively priced with respect to other budget-priced options. And the inclusion of grade a lithium ion cells and a high-quality built-in BMS establish a solid platform for reliable use in daily riding applications. Additionally, the compact design should suit smaller frames where space is limited. If you are an ebiker seeking reasonable capacity without premium pricing (for example, switching from lead acid to lithium on your present system) then LOCKBUS' pack represents exactly what the specifications suggest. view current pricing on Amazon.
For more options, check the ebike battery reviews.