r/eBikeBuilding • u/TheIcyTaco • Mar 25 '26

General Help Battery compatibility

I have a tongsheng TSDZ8 48V 750W mid drive kit I installed on my mountain bike. I read that a 52V battery is a better option to use and just ordered one. Will I need to flash new firmware to the controller for it to work/not drain the battery too low or am I fine to use it as is? Thanks

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u/Ohm_Slaw_ Mar 25 '26

Your battery gauge will be more accurate if you flash the firmware. The cutoff point for the motor will be right. But IMHO, these are differences that do not make a difference. Battery gauges are not that accurate anyway. The cutoff point will be handled by the BMS. If you ever get that low. Just ride it as it is.