If you're creating, updating or modifying a 52V ebike and you'd like to achieve actual capacity, not play the odds with the cell lottery, then the Execyc 52V 25Ah pack deserves some of your time. Of all the battery packs offered at this price-point, this may be one of the very few to advertise that it's made with LG cells. And while there isn't always a direct correlation between advertising something and the reality, the fact that this product has a 4.5 out of 5 star average rating across 13 user reviews indicates the quality may actually be as advertised. At roughly 24 cents per watt-hour for 1300 watt-hours, this sits squarely in the sweet spot of our ebike battery comparison table for those high-power builds needing significant distance.
Specs and Build
Using 1300Wh of storage capacity via LG 5000mAh cells, the Execyc 52V 25Ah battery pack has the best possible chance of providing reliable performance throughout its lifecycle. Cell quality is the largest determinant of how many charge cycles a battery will last as well as how consistently it performs during those cycles. Execyc claims their battery packs maintain at least 80% of capacity after 800 cycles. Based on data for quality cells coupled with a well designed BMS, this claim appears to be true.
The dimensions of the pack are 368 x 96 x 150 mm and it weighs approximately six kilograms. Included with the battery is a 58.8V 3A charger. Most budget packs ship with only a 2A charger. Also included with the battery is a 5-pin discharge base located at the bottom, along with two male and female XT60 discharge leads. The advantage here is that you receive the base and the battery as one unit rather than assembling these components separately. Additional design elements of the battery include a security lock, an LED power indicator, a power switch to eliminate parasitic drain, and anti-vibration pads within the casing.
The BMS is of sufficient capacity for the overall capacity of the pack. Execyc rates their pack capable of supporting motors ranging from 100 watts to 2000 watts. The battery is certified to UL 2271 standards from SGS. If you consider fire safety and certification important, then this provides a considerable advantage.
Range and Real-World Performance
Based upon 1300Wh on a 52V system, this offers substantial travel range. On a 1000-watt motor operating at maximum output continually, you should obtain just over an hour of operation time. In typical riding conditions utilizing pedal assist and variable terrain, users can expect anywhere from 35 to 50 miles of range depending on build specifics. Users operating with 750-watt hub motors will likely fall towards the upper end of that estimate.
One reviewer utilizing a 750-watt Bafang mid-drive noted perfect fitment and fantastic power and acceleration. Additionally, he mentioned that his battery would last for weeks of short commutes prior to requiring recharge. An additional buyer utilized the same battery as a secondary battery on a 52V system and stated that it added an additional 20 miles of travel range to his original battery. A reviewer purchasing this battery to replace his stock 48V 22.5Ah Freego F2 Pro battery referred to this upgrade as perfect, stating that both increased travel range and increased speed were noticeable advantages.
The included 3A charger charges this 25Ah pack from dead to full in approximately 8 to 9 hours. This is about thirty percent quicker than most budget packs shipping with a 2A charger. Charging overnight ensures a fully charged battery each morning without having to babysit the charger.
What Amazon Reviewers Are Saying
With an aggregate rating of 4.5 out of 5 stars, this appears to be one of the more positively received products listed. Buyer comments were almost universally positive, with only one 1-star review serving as a counterpoint to an otherwise very satisfied customer base.
The positives from buyers:
Buyer comments focused heavily on performance, specifically power delivery and range. One reviewer commented that power delivery and range have improved significantly since moving to this new battery. While another reviewer who tested it on a 35-mile ride found it to perform exceptionally well. In addition to comments regarding performance, several buyers referenced quality cells and UL certification as assurance factors relative to other less expensive no-name products previously purchased.
Build quality impressions:
Impressions regarding build quality are equally positive. One reviewer planning to provide follow-up comments at 6 months and 12 months later already referred to it as a very nice battery and mentioned that it has run great thus far. Another reviewer who utilizes it as a secondary battery on a 52V system referred to it as good quality and reliable.
The negatives:
The only negative comment received was from a buyer who initially thought that Execyc's suggested configuration was suitable for his ebike. However, once he realized that he could not fit it into his ebike's frame, he discovered that he was unable to return it due to the manufacturer's policy prohibiting returns of products that are deemed non-defective. This represents an example of an error attributed to an AI recommendation tool versus an error associated directly with the battery pack itself.
Additionally, one reviewer noted that he received a small piece of Styrofoam packaging material lodged in the charging port on his first unit. Removing it did not appear to cause any issues and subsequently his unit worked perfectly thereafter.
Who Should Buy This Battery
Those looking to make improvements to their ebike by obtaining greater speed or range will benefit greatly from purchasing this pack. The LG cells, combined with UL certification and inclusion of a 3A charger add considerably more value than most budget packs available today.
Benefits:
- Suitable for use on ebikes configured with Bafang mid-drives or hub motors
- Ideal for users who wish to upgrade from 48V configurations to 52V configurations
- Suitable for long-distance commuting applications exceeding 30 miles per day
- Those valuing quality cell selection and certification
- Freego F2 Pro and similar folding ebike upgrades
Not great for:
- Not ideal for budget-conscious builds
- May not fit in ebike frames with tight battery compartments
- Ebikers seeking specific forms such as Hailong or downtube shapes
Frequently Asked Questions
Will this battery work with my Bafang mid-drive motor?
Very probably yes. There are several reviewers utilizing this battery in conjunction with Bafang 750W mid-drive setups reporting excellent fitment and functionality. The 5-pin base and XT60 connectors provided allow for compatibility with most standard Bafang wiring schemes.
What cells does it use?
Execyc claims to utilize LG 5000mAh cells in this pack. That is a well-established brand name, although as with any battery listing on Amazon, cell quality may vary among different manufacturing lots. The inclusion of UL certification by SGS provides an additional layer of validation.
What charger does it come with?
Included is a 58.8V 3A charger. This is faster than the standard 2A charger typically bundled with most budget packs. This will charge the 25Ah pack in approximately 8 to 9 hours from empty.
Is the UL certification legitimate?
It is indeed. The listing states that it has been certified under UL 2271 standards by SGS. UL 2271 is the established industry standard relating to safety for lithium-ion electric vehicle batteries covering tests for electrical, mechanical, and thermal abuse.
Does it have a power switch?
Yes, it does have a power switch. The battery contains a power switch allowing users to turn off the pack when not being used, thereby eliminating parasitic drain. It also has an LED display showing the current state of charge allowing users to easily determine their remaining range without having to physically remove the pack.
Can I use this on a 48V system instead of 52V?
The battery is rated for 52V nominal. Since most 48V systems can operate safely with a lightly overcharged 52V pack, you can connect this battery to your 48V system. But please ensure your controller has adequate voltage ratings prior to making this connection to prevent damage.
Bottom Line
For users wanting reliability and long-term performance, this seems like one of the safer bets available in terms of quality cell selection and certification. Given the inclusion of a 3A charger and overall user feedback, this is one of the better choices in terms of value. See the comparison table for how it stacks up against competitors.
