Create idea 2Pcs 5S Lithium Battery Protection Board for 5 Strings 18V 21V 20A Lithium Battery

The IC dedicated to 5S lithium batteries is used as a processor to detect the real-time voltage, charge and discharge current and ambient temperature of each battery. Supports up to 20A continuous discharge current to meet the needs of high-power power tools and equipment. Contains overcharge, over-discharge, overcurrent and short-circuit protection to extend battery life and ensure safe use. Note 1: Strictly follow the wiring diagram 0V (B-), 3.7V (B1), 7.4V (B2), 11.1V (B3) 14.8v (B4) 18v (B+), do not deliberately short-circuit! Note 2: After the wires are connected, they need to be charged first before there will be output. Note 3: When connecting 5 groups of batteries in series, please ensure that the voltage of each group of batteries is the same. If not, please charge each group of batteries separately and then use them in series. During the discharge test, the group of batteries with the fastest voltage drop is the poor battery.