ITEM NAME:3pcs 1S 3.7V 2.5A PCB BMS Protection Board for 18650 Li-ion Lithium Battery C 3C Features: Main IC using original "precision" imported components. With over charge, over discharge, over current, short circuit protection function, for a variety of different shapes of 3.7V capacity lithium batteries. Using the Japanese precision protection IC, VISHAY, AOS, IR and other high quality MOSFET, FR-4 low temperature coefficient of plate, well-designed, comprehensive test. Compact size, suitable for many requirements of high integration, low cost occasions, can meet the performance requirements of many aspects, to ensure the absolute safety of the battery group. Main function: Over charging protection, over discharge protection, short circuit protection, over current protection function. Technical parameter: Over charge release voltageï ¼Å¡4.23 ±0.05V                Over charging voltage range: 4.25v  ± 0.05v Size: 35*4*2mm                                Over discharge voltage range: 2.54v  ± 0.1v Overcurrent detection current: 5A Connection description: B+ connect to battery+ B- connect to battery- P+ for battery output input + P- for battery output input - Package include: 3pcs x Protection Board.Main IC using original "precision" imported components. 3pcs x Protection Board. Overcurrent detection current: 5A. B+ connect to battery+. B- connect to battery-. P+ for battery output input +. P- for battery output input -.