Input Voltage

4.5V - 12V (Recommended: 5V-9V)

Charge Voltage

4.2V (1-cell) / 8.4V (2-cell) (Auto-detection)

Charge Current

Adjustable (Up to 2A Max)

Battery Compatibility

Single/Dual Li-ion/Li-Po (3.7V/4.2V per cell)

Charging Mode

CC (Constant Current) + CV (Constant Voltage)

Charge Status Indication

LED (Red = Charging, Green = Fully Charged)

Protection Features

Overcharge Protection, Short-Circuit Protection, Thermal Protection

Efficiency

Up to 90% (Depending on Input Voltage)

Dimensions

Approx. 36mm x 17mm (Varies by manufacturer)

Operating Temperature

-40°C to +85°C

Adjustable Current

Yes (Via resistor modification)