Common Questions and Answers

1. What type of charger should I choose?

Lithium battery must choose specific charger, do not use Charger for Leadacid battery, for leadacid charger may have MOS with high pressure breakdown protection, which will not protect of BMS over charge. Life Po4 battery charger voltage=battery string No.X3.6V, while Li-ion battery charger voltage=Battery string No.X4.2V.

2.The relationship between Battery capacity and BMS current?

There is no direct relationship between Battery capacity and BMS current, big capacity doesn`t mean a big battery, but rely on continue current, that is to say if your engine is powerful, your should choose high current of BMS, it is not relied on batterycapacity.

3.Whether my BMS damaged?

If you want to judge if the BMS is damaged, please take the folowing steps, to test if each cell voltage is the same with voltmeter? if the cell voltage difference is over 1.0V, the fault is displayed that it cannot run far, no power supply at the start range, short charge time, all these issues are almost caused by battery cells, if BMS damaged is displyed as no charge, no discharge, no discharge while the battery has voltage.

4.The bluetooth cannot be connected, why does the bluetooth refuse to pair?

First check whether each line is connected in strict accordance with the wiring diagram to ensure that the wiring is correct, and then check whether the latest version of the Xiaoxiang APP is installed, and the Bluetooth should be connected with the Xiaoxiang APP. Under normal circumstances, connect the wires according to the wiring diagram, plug in the bluetooth, and install the APP to connect to the bluetooth and charge and discharge normally. After the undervoltage protection, the Bluetooth will be turned off, and it can be activated when it returns to the recovery voltage or charging.