1S 2A BMS for 18650 battery With Nickel Strip
Round 1S 3.7V 2A Lithium Battery Charger 18650 BMS  Board
Lithium-Ion charge protection circuit comes with over-charge, over-discharge, over-current, and short circuit protection.
MOS transistor can control the battery charge and discharge, Built-in three-stage over-current detection circuit, for a variety of various shapes 3.7 V lithium-Ion batteries. This is a highly accurate voltage detection circuit and provides low standby current consumption.
 
Connection description:
B+ connect to battery+
B- connect to battery-
P+ for battery output input+
P- for battery output input-