Item Descriptions:-[Voltage Output] Provides stable output for 2S (7.4-8.4V) or 3S (11.1-12.6V) lithium batteries, with a charging current of up to 1.5A.-[Compact Size] Compact dimensions of 30.8x18.3x5mm for easy integration into various projects.-[Versatile Input Options] Supports Type-C or solder wire input, with Type-C enabling automatic voltage adjustment for QC fast charging.-[Flexible Output Configuration] Compatible with both 2S and 3S battery setups, with the option to switch from 2S to 3S by shorting designated points.-[Intelligent LED Indicators] Features LED indicators for easy monitoring; red light indicates normal operation, blue light during charging, and flashing blue light for abnormal conditions.Package:2 x Lithium Battery Boost Charging ModuleItem Specifications:Size:30.8x18.3x5mmInput Voltage:5V or Type-COutput Voltage:2SCharging Current:Up to 1.5ACharging Efficiency:94%