TECNOIOT 5pcs 2S 20A 7.4V 8.4V Battery Protection Board BMS Balance Version + Nickel Strip

【2S20A】 2S 20A 7.4V 8.4V 18650 Lithium Battery Protection Board BMS Balance Version 【compact design】Applicable scope: Suitable for lithium batteries with nominal voltage of 3.7V and full voltage of 4.2V (including 18650, 26650, lithium polymer batteries, without limitation on dimensions). Product size: 45*15*3.4mm (Standard), 48*20*3.4mm (Balance). Charging voltage: 8.4V - 9.0V. 【Description current Continuous discharge current (upper limit): 20A (If the cooling environment is not good, please reduce the use of charging current); Continuous charging current (upper limit): 10A; Balanced version: Suitable for starting currents less than 25A and less than 50W electric drills, or resistive loads below 168W, with balanced charging function. 【Note】 Note 1: The successful start of an electric drill requires two 10C-20C electric batteries, or four 5C-10C electric batteries (ordinary 18650 can not start drilling!!!); 0V and 8.4V wire, please use 2mm square over the copper wire (Nickel plate can not be used!!!); Note 2: Please connect 0V, 4.2V, 8.4V according to the diagram strictly. When connecting the battery for the first time, it must be charged before departure. 【Attention】Note 3: When the battery is charged, "430" resistance heating is a normal phenomenon, indicating that the equalization circuit is working; If the "430" resistor is also heating up in the state of not charging, please check whether the wrong line is connected. The internal capacity/resistance of 2 batteries should be as close as possible! (1 good battery + 1 bad battery = effect of using 2 batteries).