Features: The Battery Meter with Alarm accurately measures battery capacity and voltage, providing you with reals time information on your battery's performances. This versatile device is suitable for a wide ranges of users, including electric vehicle owners, solar users, and enthusiasts. It works with various types of batteries, ensuring compatibility for all users. With its easy installation and clear display, the Battery Meter is designed for convenience. The waterproof PVC display screen ensures that you can easily read the results, even in low light conditions. Whether you're participating in outdoor activities or managing a storage system, the Battery Meter is perfect for monitoring battery capacity and voltage. Be preparedand never run out of power when you need it most. Invests in the Battery Meter and take control of your battery's performances. Say goodbye to unexpected power failures and confidently monitor your battery. Stays ahead with this essential tool. Specifications: Material: ABS Voltage ranges: DC8-100V Accuracy: ±1% Item size: approx 56.5x28.5x61.8x33.6x16mm Open hole size: approx 56.5x28.5mm Package Includes: 1XBattery Capacity Voltage Meter note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.