10PCS 1S 3A/5-6A BMS PCB Protection Board For 3.7V 18650 Li-Ion Lithium Battery Features:  100% brand new and high quality   Made of high quality material, durable and practical to use   The main IC uses the original "precision" imported components.   With over charge, over discharge, short circuit, over current protection, suitable for a variety of different shapes of 3.N capacity lithium battery.   Using precision protection IC, VISHAY, AOS, IR and other high quality MOSFETs, FR-4 low temperature coefficient board, carefully designed to fully test the compact size.   Suitable for many requirements of high integration, low cost occasions.   Can meet a lot of performance requirements, to ensure the absolute safety of the battery pack.   Low current consumption.   Performance is stable.   Fine workmanship and durability.  Connection instructions:   B + connect battery +   B-connected battery -   P + for battery output +   P- for battery output input -  Parameters:   Size: 18 * 3.6mm(Approx.)   Overcharge release voltage: 4.23±0.05V   Overcharge voltage range: 4.25±0.05V   Overdischarge voltage range: 2.54±0.1V   Overcurrent detection current: 2-3 A/ 5-6 A   Main functions: overcharge protection, over discharge protection, short circuit protection, over current protection.  Package Contents :   10*Protection Plate With Soldering Strip