The UAZ 36V 15.6Ah puts 561Wh and a 40A BMS into a standard Hailong case, which is a strong spec for a 36V build. The listing went live in October 2025 and has zero reviews. Your decision rests on whether the brand's smaller packs hint at what the big one does.
Specs and Value
The listing claims 15.6Ah, or 561Wh, which clears a standard 10Ah pack by half again. Extra cells mean extra weight on the frame. If the cells used are low quality, the actual capacity will likely decrease quicker than expected. You may be able to trade some weight for possibly greater riding time. However, capacity is a direct measure of endurance.
BMS and Real Limits
The 40A BMS is a high rating for 36V. It lets the pack feed hard climbs without tripping. A cheap BMS would throttle output to prevent overheating. As mentioned previously, generating high currents produces heat internally within the battery. Theoretical max ratings do not always represent real-world performance. The internal BMS manages the flow of energy from the cells to the motor. Poor BMS programming ages cells prematurely, so the hardware spec is only as good as the code behind it. With zero reviews, that is an unverified promise.
Case and Mounting
This pack mounts using a typical Hailong-style bracket, which mounts to a variety of after-market ebike frames. The mounting process utilizes a sliding design and locking mechanism. While the majority of frames will work with this design, slight deviations in frame dimension can affect a snug fit. The plastic shell is standard-looking but feels thinner than that found on higher-end aluminum casings. The casing provides protection against dust and moisture (but not submersion), which helps protect the internal components from damage. The absence of a proper seal can allow water into the electronic components during a wet ride.
You are depending on the plastic shell to keep everything dry and intact. It is a functional design but not one designed to withstand trail abuse. The bracket on most frames is a point of weakness. If the plastic breaks under vibration, it can create enough movement to make the battery either loose or fall off completely. Check your mounting hardware regularly and tighten all screws frequently.
Real-World Range and Power
As mentioned earlier, 561Wh indicates decent range for urban commuting on flat ground and moderate use of assistive mode. Steeper inclines will result in obvious sagging of voltage as the battery discharges. Plan your commute accordingly as you assume an average efficiency. Power output is dependent upon the discharge rate of each individual cell. Although a 40A BMS theoretically allows for more aggressive power delivery, the cells' ability to deliver that power ultimately determines real-world performance. Weak cells will cause the battery to overheat or fail during periods of high load demand. Thus, you receive a hypothetical ceiling rather than an assured floor.
Most 36V setups give up torque to 48V. Past the halfway mark on the charge, expect sluggishness, more pedal effort, and faster drain on what remains.
Capacity is not merely an arbitrary number representing Wh but rather represents true endurance capability. Weak cells can shrink the usable capacity from 561Wh toward 300Wh in practice.
When choosing between a 36V setup versus a 48V setup, you are accepting compromises in addition to those related directly to electrical system operation. The lower voltage operating environment requires drawing significantly more current per unit of power produced as compared to a 48V setup. Greater current generation produces more heat within each individual cell. Push high-wattage motors through a 36V pack and heat becomes the limiting factor. The BMS manages thermal stress, but it cannot repeal it.
In short: this pack is optimized for moderate loads, while 48V systems buy you raw speed.
Hailong Compatibility
Hailong-style mounting brackets are currently the most prevalent type in the DIY ebike community. Due to its widespread acceptance as a standard, many frames available today will accept this pack. Nevertheless, "standard" does not equate to "perfectly fitting". For example, if your frame tubing is slightly wider than normal, securing the battery firmly may become problematic. Conversely, if the tubing is narrower than expected, it may warp or crack under pressure.
Measure your frame tubing extremely accurately before making this purchase. Additionally, when purchasing, review compatibility with your controller since many generic connectors accompany packs like this and must match that connection on your controller. Inadequate matching will require splicing wires together which introduces additional technical difficulties for buyers less familiar with splicing.
What Amazon Reviewers Are Saying
The listing went live in late October 2025 and still shows no customer reviews. Nobody outside the factory knows whether the cells are premium or filler. Check the latest listing for review updates.
The sibling 10.4Ah pack under a different ASIN has a few mixed reviews: some fitment complaints, some early failures. That is the only signal about this brand, and it is weak. Buying this pack now means joining the beta test.
Who Should Buy This
Buyers desiring an affordable option with required capacity for their existing 36V bike project should consider buying this product. Also suitable for DIY builders willing to troubleshoot possible problems inherent with batteries and taking calculated risks should also purchase this product. Those interested in purchasing this product should verify compatibility with their Hailong frame mount.
Skip it if you need a bike that always starts, if commuting is your only way to work, or if you want years of demonstrated performance behind your purchase.
Compare it against the rest in our ebike battery comparison table, or dig through the GoMotorbikes blog.
Check the latest price on Amazon.
Frequently Asked Questions
What is the actual capacity of the UAZ 36V 15.6Ah battery in watt-hours? The UAZ 36V 15.6Ah battery contains 561.6Wh of energy (36V x 15.6Ah = 561.6Wh). The 561.6Wh capacity is larger than almost all 10Ah and 12Ah versions of 36V batteries available today.
Does the UAZ 36V 15.6Ah come with a charger? Yes, the battery is supplied as a complete kit and includes a charger, mounting bracket, mounting screws, and two keys to secure the battery to the frame. The charger is rated for 36V lithium-ion batteries and takes approximately 5 to 7 hours to fully charge the battery from empty.
What type of connectors does this battery use? The battery uses a standard 4-pin discharge connector and an XT60 output. The 4-pin connector is commonly used in 36V ebike systems, but the configuration of the pins may differ among manufacturers. Before placing an order, verify compatibility with your controller, or contact the manufacturer for assistance.
Is the UAZ 36V 15.6Ah waterproof? The listing indicates that the battery housing is water-resistant, which means that it should tolerate light rain and splashes, but it is not waterproof. It is not advisable to submerge the battery or subject it to a high-pressure spray.
**How much does this battery weigh?**the Uaz is 10.8 pounds in the product bullet points. The weight is listed as 8.5 pounds on the Amazon tech spec page. Both of these weights are acceptable for a 36V 15.6Ah battery.
What warranty doesthis battery? UAZ supplies a 3-month replacement warranty and 12 months of technical support on the battery. Given the lack of customer reviews on this specific variant, paying close attention to the terms of the warranty when deciding whether or not to purchase the battery is a good idea.