BMS Charger Protection Board for Li-ion 18650 HX-1S 1S 2.5A 3.7V

From the shop's description

Technical Parameters Overcharge detection voltage: 4.25±0.05V Overcharge release voltage: 4.23±0.05V Over-discharge detection voltage: 2.45 ± 0.1V Upper limit continuous current: 2A Overcurrent detection current: 2.5A Charging voltage: 4.2V IC component: DW01+8205A Quiescent current: < 30uA Product size: 14mm x 2mm The Main Function Overcharge protection, over-discharge protection, short circuit protection, over-current protection Wiring Instructions B+: Connect the battery positive B-: Connect the battery negative P+: input positive for battery pack output P-: Input negative for battery pack output