Hello, I want to share my experience with ENERPROF.DE and warn others about my issues with this company. Last year, on July 31st, I placed an order for two chargers (one 8-amp fast charger and one 5-amp charger) and a 48V 15S5P 20Ah LiFePO4 battery rated for 1440 watts at 48V with 30 amp bms. I installed a 30A fuse between the battery and my motor controller (a Bafang M620), and the fuse remained intact, so there’s no chance the controller drew more current than the battery was rated for i also have lcd screen what show drawn wattages and it never have peaked more than 1380 watts, bike is also limited to 25 km/h. The total cost was €610.83.
The package arrived on September 13, 2024, but it had a hole in the lid, and the packaging tie was broken. After receiving my electric bike in November, I tested the battery and immediately noticed something was wrong. The fully charged battery should show a voltage close to 54V when measured right after charging, but it only measured 50.3V with a universal power meter. The bike’s controller also showed the charge at only 73%.
I first contacted the company in mid-December via their online form. When I didn’t receive a response, I sent multiple emails and finally heard back on January 30, 2025. They asked me to send the battery back for analysis and repair. The battery was shipped on February 14, 2025, but upon its return, the issue was still not resolved. The battery only charged to 50V, and the Battery Management System (BMS) no longer displayed the charging status. The bike’s controller still showed a 70% charge briefly, and when I tried using the bike, the battery shut off and the bike went dark, now the battery wont have any reading as using multimeter. Before this, the bike worked and i succesfully used it ten times before this repair prodecure, although the battery was never as good as new and didn’t level out properly for the 54 volts, and I noticed the battery cells weren’t balancing, and the charge never increased over time, which ruled out any issues with the bike itself.
The company issued a receipt stating the battery was “repaired” by balancing the cells. However, anyone familiar with electronics knows that balancing cells doesn’t make the battery as good as new. This repair process has dragged on for over four months, and it’s caused me a lot of inconvenience. My electric bike is my only means of transport, especially for tasks like shopping, and I don’t have access to a car or home delivery services.
Although I have home and electric bike insurance, the warranty doesn’t cover batteries damaged during shipping, and the company’s slow response times have made the whole situation even more frustrating. They’ve tried to make me accept a faulty battery despite the significant amount of money I’ve invested. €610.83 is a lot for me, and I feel the company is not following proper consumer protection practices.
I’ve demanded a replacement battery several months ago, even before the battery went in for repair, but they refused. I’ve also asked for a full refund, though I would prefer a replacement. If I don’t get a new battery, a refund will likely be my next step. Based on consumer protection laws, I believe the company is obligated to provide a replacement or refund without unnecessary delays. They should know that balancing cells doesn’t fix a damaged battery—either the cells or the BMS were faulty from the beginning.
If anyone has suggestions for popular forums (in German or English) where I can share my experience, I’d appreciate it. I plan to warn other electric bike and EV communities about this manufacturer and will continue posting until I get the warranty battery I’m owed. I’ve already filed a complaint with the EU consumer department, and it is now being handled by officials.
For those interested, here’s the link to their website and battery i got 48V ENERpower LiFePO4 battery 15S (48V) 20Ah (960Wh) BMS 30A
The package arrived on September 13, 2024, but it had a hole in the lid, and the packaging tie was broken. After receiving my electric bike in November, I tested the battery and immediately noticed something was wrong. The fully charged battery should show a voltage close to 54V when measured right after charging, but it only measured 50.3V with a universal power meter. The bike’s controller also showed the charge at only 73%.
I first contacted the company in mid-December via their online form. When I didn’t receive a response, I sent multiple emails and finally heard back on January 30, 2025. They asked me to send the battery back for analysis and repair. The battery was shipped on February 14, 2025, but upon its return, the issue was still not resolved. The battery only charged to 50V, and the Battery Management System (BMS) no longer displayed the charging status. The bike’s controller still showed a 70% charge briefly, and when I tried using the bike, the battery shut off and the bike went dark, now the battery wont have any reading as using multimeter. Before this, the bike worked and i succesfully used it ten times before this repair prodecure, although the battery was never as good as new and didn’t level out properly for the 54 volts, and I noticed the battery cells weren’t balancing, and the charge never increased over time, which ruled out any issues with the bike itself.
The company issued a receipt stating the battery was “repaired” by balancing the cells. However, anyone familiar with electronics knows that balancing cells doesn’t make the battery as good as new. This repair process has dragged on for over four months, and it’s caused me a lot of inconvenience. My electric bike is my only means of transport, especially for tasks like shopping, and I don’t have access to a car or home delivery services.
Although I have home and electric bike insurance, the warranty doesn’t cover batteries damaged during shipping, and the company’s slow response times have made the whole situation even more frustrating. They’ve tried to make me accept a faulty battery despite the significant amount of money I’ve invested. €610.83 is a lot for me, and I feel the company is not following proper consumer protection practices.
I’ve demanded a replacement battery several months ago, even before the battery went in for repair, but they refused. I’ve also asked for a full refund, though I would prefer a replacement. If I don’t get a new battery, a refund will likely be my next step. Based on consumer protection laws, I believe the company is obligated to provide a replacement or refund without unnecessary delays. They should know that balancing cells doesn’t fix a damaged battery—either the cells or the BMS were faulty from the beginning.
If anyone has suggestions for popular forums (in German or English) where I can share my experience, I’d appreciate it. I plan to warn other electric bike and EV communities about this manufacturer and will continue posting until I get the warranty battery I’m owed. I’ve already filed a complaint with the EU consumer department, and it is now being handled by officials.
For those interested, here’s the link to their website and battery i got 48V ENERpower LiFePO4 battery 15S (48V) 20Ah (960Wh) BMS 30A