4S 40A 14.8 16.8V 18650 LiFePO4 BMS/ Lithium Iron Battery Protection Board
Product Description :
4S 40A 14.8 16.8V 18650 LiFePO4 BMS/ Lithium Iron Battery Protection Board With Equalization Start Drill Standard
Balanced version: Suitable for electric drills with a starting current of 80A or less and power of 200W or less, with a balanced charging function.
Note 1: The successful start of the drill requires four 15C-20C power batteries, or eight 10C-15C power batteries (ordinary 18650 can not start the drill! ! !).
Note 2: Connect 0V, 3.6V, 7.2V, 10.8V, 14.4V in strict accordance with the diagram. Do not intentionally short circuit.
Note 3: When the battery is charged, the “360” resistance heating is normal, indicating that the equalizing circuit is working; if the “360” resistance is also heating in the non-charging state, please check whether the wrong wiring is connected.
For some customers with poor electronic foundation, please explain: Do not mix good battery and bad battery together! The capacity/internal resistance of the 4 batteries should be as close as possible (3 good batteries + 1 bad battery = 4 battery use effect).
1* LiFePO4 Board
Scope of application:
Suitable for nominal voltage 3.2V, full-voltage 3.6V iron-lithium batteries (including 18650, 26650, lithium polymer batteries, there is no limit on the size)
Product Size: 44*55*3.4mm (Standard Edition), 45*60*3.4mm (Balanced Edition)
Product Weight: 9.2g (Standard Edition), 10.2g (Balanced Edition)
Charging voltage: 14.4V - 16V
Continuous discharge current (upper limit): 40A (If the cooling environment is not good, reduce the load current use)
Continuous charge current (upper limit): 20A
Standard Edition: Suitable for electric drills with starting current less than 80A and power less than 200W.
Brand Name: se7en
Accessory Type: Battery Accessories
Unit Type: piece
Package Weight: 0.04kg (0.09lb.)
Package Size: 15cm x 16cm x 17cm (5.91in x 6.30in x 6.69in)