AJMRTC 10Pcs TP4056 Lithium Battery Charging Module, 5V 1A Linear Charger Board, 18650 Li-ion Battery Charging Controller with Overcharge Over-Discharge Short Circuit Protection for Power Bank, DIY

AJMRTC TP4056 charging board is a popular dedicated charging module for single 3.7V 18650 lithium-ion batteries. It adopts the classic TP4056 linear charging IC, which automatically switches from constant-current charging phase to constant-voltage trickle charge when the battery approaches 4.2V termination voltage to protect the battery lifespan. Powered by standard 5V USB input, it can work with USB adapters, power banks and computer USB ports. The onboard resistor sets the default charging current up to 1A. Two status LEDs help you check charging progress at a glance. Integrated protection circuits prevent damage from abnormal conditions such as overcharging, overdischarging and accidental short circuit. It is widely used for homemade power banks, portable lamps, sensor battery packs and electronic maker projects. This module only supports single 3.7V lithium cell and cannot charge lithium iron phosphate or multi-cell series battery packs. Verify battery polarity strictly before connection to avoid burning the module.

Specifications

Brand: AJMRTC

Chip: TP4056

Input Voltage: DC 5V

Charging Current: Max 1A

Termination Voltage: 4.2V for 3.7V Li-ion Battery

Protection: Overcharge, Over-discharge, Over-current, Short Circuit Protection

Indicator: Red (Charging), Green (Full)

Battery Type: Single 3.7V 18650 Lithium-ion Cell

Application: DIY Power Bank, Battery Charging, Portable Electronic Projects