r/CargoBike • u/dkrandu • 12h ago
Elops / BTWIN R500E Longtail v2 works with 3rd party 48v batteries
I couldn't find this information anywhere. Decathlon employees (bicycle service folk) told me that, because the battery has a CAN BUS, you can't replace it with a non-decathlon battery, because it won't communicate with the controller anymore.
Because my battery completely died and there are none in stock in my country nor in the surrounding 4 countries, I ordered a universal 48v battery from aliexpress without can bus or any comms, just plain +/-. It works, so you likely can put a universal 48v battery on any Decathlon R500E, not just v2 like mine, but I haven't tried any of the other generations.
I cut the controller's cables and soldered on a pair of XT60 plugs, because the battery's holder came with XT60 itself. When you order a battery, make sure you also order some T or XT or other high current plugs and you solder them on. Crimping likely makes the motor rattle.
The only thing I noticed is that, because can-bus is disconnected, the battery % doesn't show the percentage anymore, but shows the actual voltage (see first picture).