MPPT Solar Charging Board Controller 1A 3.7V / 3.2V 18650 LiFePO4 Lithium Battery Charging Module

This is an MPPT solar controller module, primarily designed in two versions for 3.7V/4.2V lithium-ion/lithium-polymer batteries and 3.2V/3.6V lithium iron phosphate batteries. It integrates features such as adaptive charging, multi-stage charging modes, thermal regulation to prevent overheating, and low-power sleep mode for protection. The module dynamically adjusts the charging current based on the output capability of the input power source. It is suitable for various applications, including toy battery charging, solar battery charging, handheld devices, LED lighting devices, portable equipment, and various other charging devices.