1300Wh of usable energy puts the Hawkvium 52V 25Ah near the top of the aftermarket capacity range, so we dug into its specifications, build quality, and what we could find regarding user experience and customer support.
The Hawkvium is a 52V 25Ah pack. The battery is stated to operate with any controller/motor combination from 100W to 3000W. That provides a large operating envelope to cover a wide variety of ebikes from a low-wattage commuting model to high-performance models.
Specs and Build Quality
Dimensions of the pack are 14.49 x 3.54 x 5.94 inches with a weight of 13.23 lbs. These are important since the pack uses a 5-pin discharge base connection rather than a universal cradle. The base is shipped with the pack. However, you will want to ensure that the 14.5 inch length of the pack will fit within your bike's frame triangle or mounting area.
The pack includes both XT60 and XT90 female discharge connectors. The dual connector configuration allows for single or dual motor configurations without needing an adapter to switch between them. In addition, the pack includes a power switch and a power indicator light. Both are standard courtesy features in this price range, but still appreciated.
Additional build-quality features include anti-vibration pads, a waterproof case, and a built-in security lock. The anti-theft lock is a great feature for those who leave their bikes parked outside. While the waterproofing is described as a waterproof case, no IP rating is provided. Treat it as weather resistant rather than submersible.
BMS and Safety Features
The BMS on this pack operates at 60 amps. While most budget 52V batteries in this range come with a 30A or 40A BMS, the increased current limit provides additional flexibility for high-draw setups. The BMS will provide roughly 3120W of peak discharge, aligning with Hawkvium's 3000W motor compatibility claim.
The BMS protects against overcharge, over-discharge, short circuit, and overcurrent. Standard stuff, but these are required by the UL2271 certification.
Safety certifications like UL2271 are not commonly seen at this price point. This certification represents independent third-party testing of the battery's ability to withstand vibration, shock, drops, crushing, and extreme temperatures.
Anti-vibration pads were added to protect the internal welds and connections from road vibration. Constant vibration can weaken connections over time and shorten a pack's life.
Hawkvium claims Grade-A cells with 5000mAh capacity each and 1000-plus deep charge cycles retaining 80% capacity after 800 cycles. Hard to verify without tearing the pack open, but the UL2271 cert makes those claims more believable.
What Amazon Reviewers Are Saying
With only 2 ratings and a 4.5-star average, there isn't much user feedback yet. The product is relatively new on Amazon.
Both reviewers gave it five stars and commented positively on build quality and battery life. Positive, but not statistically meaningful.
Honestly, the lack of reviews is the biggest unknown here. With a budget battery from a less established brand, there's some risk on long-term reliability. The UL2271 certification helps reduce that risk, but verified long-term user reports from buyers who have owned the pack for 6-12 months would be more reassuring. That said, the two early adopters are happy with their purchase and that counts for something.
Range and Real-World Performance
For real-world range on a 52V 25Ah (1300Wh) pack:
On a 750W commuter with moderate pedal assist, expect 35-50 miles. On a 1000W setup with more throttle, 25-35 miles. On a 2000-3000W performance build, 15-25 miles depending on how hard you push it.
The 1000-plus cycle claim is notable. If you ride 20 miles per day and charge daily, that's about 3 years before noticeable capacity drop. For weekend riders, this pack could last 4-5 years or more. Charging habits, storage temperature, and discharge depth all affect real-world life. Store it at partial charge in a cool place when not riding for extended periods and you'll get the most out of it.
Who Is This Battery For?
First, anyone building or upgrading a high-power ebike. If you're running a 1500W, 2000W, or 3000W motor, the 60A BMS and dual-connector setup mean you won't be fighting current limits. Most 30A packs would bottleneck your top-end power.
Second, riders who prioritize safety certification. The UL2271 certification is rare at this price point. If you're storing the battery indoors or charging overnight, the third-party testing gives real peace of mind.
Third, range-focused commuters. 1300Wh is serious capacity. Even on a moderately efficient build, you're getting multi-day range. You could go 3-4 days between charges on a 10-mile round-trip commute.
The dimension check is critical. Measure your battery compartment before ordering. At 14.5 inches long, this pack won't fit every frame. Hawkvium includes detailed size info for exactly this reason.
Compare the Hawkvium against other 52V options on our ebike battery comparison table to see how it stacks up on price per Wh.
Frequently Asked Questions
Will this battery work with my 48V controller?
No. This is a 52V battery and requires a 52V controller. Using it with a 48V controller can trigger the BMS protection or damage your controller. Always match voltages.
What connectors does it come with?
It includes XT60 and XT90 female connectors. The XT60 is standard for single-motor setups under 2000W. The XT90 handles higher current for dual motor or high-power builds.
Does the battery include a charger?
The listing doesn't specify whether a charger is included. Check the product page for current package details before ordering. You may need to purchase a 52V lithium charger separately.
How long does it take to charge?
Charging time depends on the charger. With a standard 5A charger, full charge on a 25Ah pack takes roughly 5 hours. A faster 10A charger cuts that to about 2.5 hours.
What type of cells does it use?
Hawkvium claims Grade-A 5000mAh cells, likely 18650 format. The UL2271 certification adds credibility. Actual cell manufacturer isn't specified.
Is the UL2271 certification real?
Yes, UL2271 is a real UL standard for light electric vehicle batteries. The certification means the pack passed defined tests for vibration, shock, crush, thermal, and electrical abuse conditions. Not all ebike batteries on Amazon carry this cert.
Can I mount this on a rear rack?
The battery uses a 5-pin base mount system, not a traditional rack bracket. It's designed for frame triangle or downtube mounting. Check the mounting base against your rack platform.
Grab the Hawkvium 52V 25Ah on Amazon or browse all 52V options on our comparison table.