... , light weight, high stability, long service life (500 times of -800 cycles).2 Battery built-in PCM/ BMS protection system, has ... power battery 36V8Ah, 24v7ah, 36v10ah, 48v10ah, 48v20ah battery pack. 48 volt battery pack, lifepo4, bicycle freewheel 24t, bicycle freewheel 22t, electric ...