KEHIPI 10PCS TP4057 1A Lithium Battery Charging Protection Board Module with Protection Type-C USB Charging Boards 3.7V 4.2V TP4056 Upgraded

TThe 3.7v lipo battery charger application DIY lithium battery charging; Small electrical appliance magic;Installing a charging port on a tablet computerSuitable for various types of 3.7V lithium batteries, including 18650 and composite batteries. TP4057 1A Lithium Battery Charging Board with ProtectionType-C USB C Li-ion Battery Charging Board Dual output of charging status, no battery and fault status display Function Introduction: When the charging current drops to 100mA after reaching the final float voltage, the charging cycle will be automatically terminated When the battery voltage drops below 405V (roughly corresponding to 80% to 90% of the battery capacity), the charging cycle resumes. When the battery voltage is below 2.9V, the battery will be pre charged with a current of 100mA. With protection board, overvoltage protection, over discharge protection, over-current protection, over discharge protection value: 2.4V; Overcurrent protection value: 4A.