MPPT Solar Charge Controller 1A 4.2V 3.7V 18650 LiPo Li-ion Lithium Battery Charger Module SD05CRMA

The SD05CRMA is a charge controller module featuring MPPT technology, specifically designed for charging single-cell 3.7V Li-ion and Li-Po batteries from low-voltage solar panels. It automatically manages the charging process to maximize power extraction and ensure battery safety.

Key Features
- MPPT Technology: Utilizes Maximum Power Point Tracking to efficiently charge from solar panels or other power sources.
- Input Voltage: Optimized for power sources with an output voltage between 4.4V and 6V.
- Battery Compatibility: Supports standard single-cell (3.7V) Lithium-Ion and Lithium-Polymer batteries.
- Adjustable Charge Current: Delivers a default maximum charge current of 1A, which can be customized by changing the R1 resistor.
- Smart Charging Functions: Automatically adapts the charge current to the power source's capacity, includes a pre-charge function for recovering deeply discharged batteries, and provides integrated overcharge protection.
- Status Indicators: Two onboard LEDs provide clear visual feedback: a 'CR' light indicates charging is in progress, and an 'OK' light signals that the battery is fully charged.