APPLICABLE BATTERY: Supports 3–20S lithium battery packs, 4–24S lithium iron phosphate (LiFePO4) battery packs, and lead-acid batteries rated at 12V, 24V, 36V, 48V, 60V, 72V, and 84V. Also supports custom voltage range from 9.5V to 100V. DISPLAY: Features a backlit digital LCD display with reinforced waterproof screen. Shows battery voltage and remaining capacity simultaneously for clear battery status monitoring. POWER-OFF MEMORY: Retains user settings after power is disconnected. LOW VOLTAGE ALARM: Activates when remaining battery capacity drops below 10% (battery icon flashes) to indicate charging is needed. LOW POWER CONSUMPTION: Normal operating current consumption is less than 15mA; low-power mode consumes less than 1mA. CALIBRATION: Includes a calibration screw for easy zero-bias adjustment to improve measurement accuracy. EASY TO INSTALL: Mounts easily on panels or surfaces using included nut and bracket. WATERPROOF & DUSTPROOF: Rated IP67 for protection against water splashes and dust. Color: Black Material: Plastic Package Contents: 1 x battery voltage and capacity meter Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.