5S 21V 4.2V Funzione di Bilanciamento Bordo di Protezione 68mA 5S Li-Ion Lipo Batteria Al Litio 18650 Batterie Equilibrata modulo BMS PCB

Parameter:

Balance Voltage for each single cell: 4.2V

Balance current for each single cell :66mA

Size: L25mm*W22mm

Balancer is just a Auxiliary function, The balancing means when the battery charging,each series battery need with 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.

Note:

battery internal resistance differences within 5 milliohm, voltage within 0.03 V voltage, capacity vary within 50 ma

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.

3S 4S 5S 6S 7S 8S 4.2v li-ion balancer board 18650 li-ion balncing full charge battery balance board