2S 20A 7.4V 8.4V 18650 Lithium Battery Protection Board/BMS Board
Standard/Balance For DIY
Product Description:
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Applicable scope: Suitable for lithium batteries with nominal
voltage of 3.7V and full voltage of 4.2V (including 18650, 26650,
polymer lithium batteries, without limitation on the dimensions)
Product Size: 45*15*3.4mm (Standard), 48*20*3.4mm (Balancing)
Charging voltage: 8.4V - 9.0V
Continuous discharge current (upper limit): 20A (If the cooling
environment is not good, reduce the load current use)
Continuous charge current (upper limit): 10A
Standard Edition: Suitable for starting drills with currents up to
25A below 50W, or resistive loads below 168W.
Balanced version: Suitable for starting currents below 25A and
below 50W power drills, or resistive loads below 168W, with
balanced charging function.
Note 1: The successful start of power drill requires two 10C-20C
power batteries, or four 5C-10C power batteries (ordinary 18650 can
not start drill! ! !); 0V and 8.4V cable, use 2 square mm Above
copper wire (cannot use nickel plate!!!)
Note 2: Connect 0V, 4.2V, 8.4V according to the diagram strictly.
When connecting the battery for the first time, it needs to be
charged before output.
Note 3: When the battery is charged, “430” resistance heating is a
normal phenomenon, indicating that the equalizing circuit is
working; if the “430” resistance is also heating in the state of
not charging, please check whether the wrong line is connected. For
some customers with poor electronic foundation, please explain: Do
not mix good batteries and bad batteries together! The
capacity/internal resistance of 2 batteries should be as close as
possible! (1 good battery + 1 bad battery = 2 battery use effect).
