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Battery 18650 Balance Board 4s 4.2V:
Specifications:
Balance Voltage for each single cell: 4.2V
Balance Current for each single cell: 66mA
Size: 26 x 21mm
Balancer is just a Auxiliary function, the balancing means when the battery charging, each series battery needs the same voltage. When ONE cell voltage get 4.2V , the other cells not, the first cell voltage will discharge to wait the other cells rising to the same level.
Welding Points:
B4 : Connect battery positive
B3 : Connect the point between battery 1 and battery 2
B2 : Connect the point between battery 2 and battery 3
B1 : Connect the point between battery 3 and battery 4
B- : Connect battery negative
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