Aisikai Maximum 12V/24V Battery Charger with 3A-10A Output Small Size. Wide Voltage Input Range: Supports AC 100-240V input with 50Hz/60Hz frequency for global compatibility. Three-Stage Charging Method: Constant current then constant voltage to prevent overcharging and extend battery life. High Efficiency Design: Efficiency exceeds 85% with low no-load consumption under 3W. Comprehensive Protection: Features short circuit and reverse connection protection for safe operation. Adjustable Output: Charging voltage and current can be adjusted via potentiometer on site. LED Status Indicators: Visual AC power and charging status indication via LED display. Compact and Lightweight: Small dimensions and light weight (0.65kg-1.15kg) for easy installation.