Aisikai 12V/24V Battery Charger with 3A-10A Output Small Size, Generator Parts & Accessories. Three-Stage Charging Method: Constant current then constant voltage to avoid overcharging and extend battery life. Wide Voltage Input Range: Accepts AC 100-240V input with high efficiency over 85%. Comprehensive Protection: Features short circuit and reverse connection protection for safety. Adjustable Output: Charging voltage and current can be adjusted via potentiometer. LED Indicators: Displays AC power status and charging indication clearly. Wide Operating Temperature: Functions normally in temperatures from -30 to 70 degrees Celsius. Compact Design: Small volume and light weight for easy fixed installation. One Year Warranty: Includes one-year replacement warranty coverage.