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Battery 18650 Protection and Balance Board 2s 8.4V 4A:
Specifications:
Over Charging Voltage: 4.29V
Over Discharge Voltage: 3V
Charge Voltage: 8.4 - 9V
Max Charging Current: 4A
Size: 35 x 17 x 1.5mm
The Balancer is just an Auxiliary function. The balancing means when the battery is charging, each series battery needs the same voltage, when one cell voltage reaches 4.2V, the first cell voltage will discharge to wait for the other cells to reach the same level.
Soldering Instructions:
When soldering wires to protection board the touch time between soldering iron and protection board should not be longer than 1.5 seconds otherwise you could damage the board
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