2PCS Battery Capacity Monitor Indicator Meter ICStation DC 8-30V Digital Battery Meter with 2 USB Ports RV Battery Monitor 12V with Power-Off Memory for Marine RV Golf cart Motorcycle

【Dual USB Ports】Measure battery voltage and remaining capacity while charging other devices. Supports lithium, lead-acid, and iron-lithium batteries. Operating voltage: DC8-30V, measured voltage: DC8-30V, output voltage: DC5V., 【Power Loss Memory】Retains settings even after a power interruption, eliminating the need for reconfiguration. Convenient operation., 【Reverse Polarity Protection + Low Voltage Flashing Alert】Offers protection against reverse polarity. Screen flashes as a reminder when voltage is low., 【Versatile Application】Suitable for golf carts, cars, RVs, motorcycles, boats, and more. Measures battery voltage and remaining capacity. Also applicable for testing battery capacity and voltage in various settings., 【Comprehensive User Manual】Detailed instructions for configuring measurement modes. Digital display screen for easy reading. Adheres to international standard dimensions.