7S 18650 Lithium Battery Balancing Board

This 7S 18650 Lithium Battery Balancing Board is suitable for the li-ion battery pack 7S BMS without balance function so as to equalize lithium battery charge function and make each battery series to charge at the same time.

Note: This balancing board must be used together with a BMS board and the BMS is without balancing function

Parameter:
Balance Voltage for each single cell: 4.2V
Balance current for each single cell :66mA
Size: L25mm*W22mm
Balancer is an Auxiliary function. The balancing means when the battery is charging, each series battery needs the same voltage. When ONE cell gets 4.2V and the other cells gets less than 4.2V, the first cell voltage will discharge waiting for the other cells to rise to the same level.

Note:
Battery internal resistance differences within 5 milli-Ohms, voltage within 0.03 V voltage, capacity vary within 50mA
Cut-off Voltage is according to the BMS setting.
Note:the balancer starts balancing when the one cell get 4.2V, The Cut-off Voltage is according to the BMS setting,but the bms cut-off voltage needs more than 4.25V which is much better.

Features & details
This Balancing board is suitable for electric car, electric power assistant car, skateboard car, inverter, etc
Can be used to avoid explosion, fire and damage of your battery pack, safe for use
Help prolong the service time of your batteries
Integrated output overvoltage protection, short circuit protection, overload protection; Integrated over-charge and over-discharge protection.