Specs and Build Quality
This review looks at the EXECYC 52V 25Ah ebike battery, which represents a significant departure from what we've seen so far in terms of capacity. While most 52V batteries max out at 20Ah for 1040Wh, this battery offers a whopping 25Ah and therefore 1300Wh. That’s a lot of juice. And that's exactly why EXECYC went ahead and built a 50 amp smart BMS into this pack.
The EXECYC 52V 25Ah battery comes in a typical Hailong-style case, although slightly larger than your average 52V 20Ah battery due to the increased capacity. The dimensions are 368 x 95 x 150 mm (or approximately 14.5 x 3.7 x 5.9 inches) and slightly taller than a normal 52V 20Ah battery. So make sure to verify your frame's space constraints prior to purchase.
Here are the specifics:
Voltage: 52 volts (58.8 volts when fully charged) Capacity: 25Ah (1300Wh) Maximum discharge rate: continuous rate of 50 amps through smart BMS Connector type: xt60 Base plate connection: standard 5 pin Included charger: 58.8 volt, 3a smart charger Dimensions: 368 x 95 x 150 mm Weight: approximately 12-13 pounds. Range: estimated 34-47 miles per Charge Charge time: estimated 7-8 hours Certification: ul2271 certified by SGS.
The case itself features a locking mechanism and power switch. Additionally there is an LED light along the side of the case which allows you to determine whether your battery is being powered or not.
As mentioned earlier, the xt60 connector type is industry-standard for this amount of power and the five-pin connection plate serves both as a charging interface and to communicate with the BMS.
For its price-point, the build quality appears to be quite solid. The case features a rubber seal to protect against moisture and dust. The mount kit for attaching the pack to your bike includes a lock to prevent theft while parked. EXECYC guarantees over 1000 Charge cycles and a minimum of five years battery life.
BMS and Safety Features
So now you know. We’ve got a 52V battery designed to run a 2kw motor. And yes, it has a 50A smart BMS. And it's certified as meeting the ul2271 safety standard. All for less than 600 dollars. Which is crazy. I mean, i would never buy a battery that isn’t UL-certified.
The fifty amp smart BMS is what makes a pack this large practical for high-power builds. At 52 volts, fifty amps of continuous discharge translates to roughly 2,600 watts of headroom, which comfortably clears the draw of most 1,000 to 2,000 watt hub and mid-drive motors without tripping protection. The UL2271 certification from SGS is the meaningful part here, since it means the pack has passed abuse testing for over-charging, short-circuiting, and thermal-runaway scenarios. For riders who charge indoors or need certification to satisfy an insurance or regulatory requirement, that is a genuine differentiator at this price point. If that matches your build, check the current price on Amazon.
What Amazon Reviewers Are Saying
Based on feedback from buyers currently using the EXECYC 52V 25Ah battery on Amazon, customers seem to love it. It has earned a full five-star rating based on just five reviews at present. Buyers who have reviewed the product praise its ability to deliver range estimates consistent with the stated specifications (i.e., approximately 34-47 miles), as well as how well it performs under heavy load conditions (e.g., during steep hill climbs).
Several users have reported success with using this pack with high-wattage setups (up to 2kw). Users also report easy installation using the pre-mounted Baseplate and appreciate having the lock and power switch. Some users note that due to its large size, the pack doesn't always fit inside their frame's battery compartment without making adjustments to its positioning.
Additionally, two reviewers were unhappy with the length of time required for recharge (approximately seven to eight hours). However, these users could potentially utilize a higher amp-rated charger to expedite recharging time. They should ensure to match the charger's voltage output (58.8V) to that of the battery.
Who Is This Battery For?
If you’re looking for an extreme-Range battery with substantial power capabilities, i.e., capable of powering an extremely efficient motor setup (over 2 kw) without issues related to excessive heat generation within the BMS, then this battery could be an excellent option for you. The extended range capability is ideal for those that require constant access to their bikes for long-duration commutes and do not wish to stop frequently throughout their trip to recharge.
Additional potential benefits include:
- suitable for Bafang BBSHD style mid-drives or other equivalent products
- ideal for high-wattage hub motor configurations (>1500W)
- commuters with long travel distances (>40 miles)
- those seeking assurance in knowing their ebike battery meets fire-safety standards
On the flip side, the following user groups might find this battery less suitable:
- tight-fitting frame geometries (measure carefully, as this pack is relatively tall.)
- low-profile designs where each ounce counts
- quick-recharge requirements. Three amps is standard (seven-eight hour recharge time.)
Please see our ebike battery comparison chart for additional information comparing this unit to other available products.
Frequently Asked Questions
What motors is this battery compatible with?
The battery is designed for compatibility with motors ranging in efficiency from 500 watts up to 2000 watts. Due to its inclusion of a fifty amp rated smart BMS, it offers ample room for operation of very high-power setups. Compatible with Bafang, Voilamart, aw, Tongsheng, and virtually all conversion kit packages, the five pin Baseplate is generally accepted among most kits.
How long does the battery last on a charge?
EXECYC quotes an estimated thirty-four to forty-seven miles of usable range depending upon such factors as motor power levels utilized. Terrain ridden upon. Rider weight. And utilization of both throttle input and assistance from pedals. On mixed terrain utilizing a one-thousand watt motor you can realistically expect somewhere in the vicinity of twenty-five to thirty miles of actual usage per single Charge. Running the same motor in excess mode at full throttle you can estimate ten-twenty miles per single Charge.
Is it really UL2271 certified?
Yes, according to executive summary listings. The executive summary lists the battery as having met ul2271 certification standards by SGS. As referenced previously. Ul2271 certifications represent legitimate testing protocols for ebike battery packs for fire-safety performance standards. Testing encompasses validation of compliance with abuse-testing parameters including over-charging/short-circuiting/thermal-runaway prevention etc.. If you require ul2271 certification for purposes of obtaining an ebike insurance policy or fulfilling regulatory requirements for your area. This is one of the only ultra-low-cost packs that qualifies.
How long does charging take?
Approximately seven to eight hours from zero percent depletion using the supplied sixty-nine-volt three-amp smart charger. The charger controls the Charge cycle profiles automatically and deactivates when complete.
Will it fit my bike?
The pack measures 368 x ninety-five x fifteen-zero millimeters. The fifteen-zero millimeter vertical measurement is critical because many manufacturers design their down-tubes fairly narrow. In order to accurately assess suitability for fitment prior to purchasing please measure your down-tube width carefully.
How many charge cycles does it support?
According to executive summary documentation. Executive summary claims that this pack will endure greater than one thousand Charge-discharge cycles before retaining eighty percent of original capacity. Therefore if you ride your ebike daily (and therefore Charge every day). You should receive at least three years of service out of this pack.
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