ماژول محافظ شارژ باتری لیتیومی تک سل 3 آمپر   مشخصات ولتاژ ورودی  38V جریان 3A مدل چیپ 21130BIB ابعاد 42mm x 42mm  Pinout B is connected to the battery positive pole B is connected to the negative pole of the battery P is connected to the positive terminal of the chargedischarge terminal the charge terminaldischarge terminal is shared P Chargedischarge terminal negative common terminaldischarge terminal shared