DC 12V 24V 36V 48V 72V Battery Monitor LCD Digital Battery Meter with Alarm, Front Setting and Switch Key, Battery Capacity Voltage Indicator

【Working Voltage Range】This battery monitor 12v can tolerate widest working voltage range from DC 12V to 84V, which can automatically detect to the accurate voltage according to the battery voltage. This battery capacity indicator is compatible with 12V/ 24V/ 36V/ 48V/ 60V/ 72V/ 84V lead acid battery. Powered by tested circuit, don’t need extra power source. 【LCD Display Screen】The battery indicator is equipped with high quality LCD Screen, providing better display effect. You can read the results from different angles, low working power consumption and the max is 5 mA. This ensures that the 12V battery monitor can clearly see the values even when used at night. 【Practical Design】The battery capacity voltage indicators are designed with switched function button, you can press the button to check the cattery capacity or real-time voltage and turn off, with alarm design, the battery meter display will flash when the battery capacity is lower than 20%. 【Easy to Install】This battery meters with alarms can be applied to different machines. Installation is very simple. Battery gauge indicators provided with Reverse Polarity Protection, Simple connection with reverse protection, won't burn if connect reversely. 【Adapted Battery Types】The battery detector is suitable for lithium batteries and lead-acid batteries. Note: it cannot be used for Lithium Iron Phosphate batteries, 1-2 Li batteries in series and over 15 Li batteries in series.