Description: Working current: 30A Balanced current: 60mA Over current: 60A Temperature range: -30 - +80℃ Over charge detection voltage: 4.28+ 0.05 V Over charging voltage: 4.095-4.195V Over discharge voltage: 2.55±0.08 Over charge detection delay time: 0.1s Short circuit detection delay time: 100ms Over current detection delay time: 500 ms Size:56x45x1.2mm Main function: Over charge protection, over discharge protection function, short circuit protection Function, over current protection function, balance. Interface definition: Charging port of the plate and the discharge port is the same, both positive and B- connecting Battery"-", P- charging port and port on the negative electrode; B-, N-, P- pads are all over the hole, the hole diameter of the pad is 3.5mm; The battery charging detection interface with DC output in the form of needle. Do the same mouth When the N- is not wiring. Package Includes: 1 x 4S 30A 14.8V Protection board