- Accurate LCD Battery Power Indicator: This digital voltmeter provides precise voltage measurements for various battery types, including lithium, iron, and lead-acid. The clear LCD display ensures you can monitor battery power with confidence. - Wide Voltage Compatibility: With a working voltage range of DC 10V to DC 100V, this voltmeter is perfect for multiple applications. Whether for your car, boat, RV, or any battery-operated device, you can rely on consistent and accurate voltage readings. - Durable Hard Top Protection: Designed with a hard top protection feature, this voltmeter safeguards its internal components from external damage, enhancing its durability and overall reliability. - Energy Efficient: Utilizing advanced technology, this voltmeter operates with ultra-low power consumption. It will not over-discharge your battery, helping to extend battery life and minimize the frequency of replacements. - User-Friendly Key Switch and Adjustable Timer: The device includes a key switch for straightforward operation, along with adjustable display duration settings to customize how long the readings are visible based on your needs. Use Scenarios: - Monitor the battery health of your RV during long trips to ensure reliable power supply. - Check the voltage of your boat's battery before setting off to prevent unexpected failures. - Easily assess the condition of car batteries, helping you avoid breakdowns and extend battery lifespan.