Features LCD Display: The digital battery meter equipped with a large LCD display, it can visually display the battery type, remaining power, total voltage, etc. It can also indicate the highest voltage battery, the lowest voltage battery and the voltage difference. Wide Application: The digital battery supports battery capacity detection, voltage balance, built-in resistance, battery discharge, ESC / Servo / PPM test. It is suitable for checking the battery and reading your battery voltage easily. Long Serve Life: The digital battery meter helps optimize battery performance and extend the overall battery life by ensuring the balance of individual batteries, measure the voltage of a single battery and the voltage of the whole battery. Display Mode: The digital battery meter can display the estimated capacity and voltage of LiPo / LiFe / Li-ion / NiMH / NiCd battery pack, and quickly check whether the battery needs to be charged before use. Compatible: The digital battery meter supports the wide and narrow frequency servos detection, you can manually test servo rotation, the central position of the servo, the servo automatically swings left and right, and the swing speeds can be adjusted. Specification: Condition: 100% Brand New Item Type: Battery MeterMaterial: Plastic Input Voltage: 6.5V - 29.4V Function: 1. Battery Capacity Detection 2. Voltage Balance 3. Built-In Resistance 4. Battery Discharge 5. ESC / Servo / PPM Tester Product Size: Approx. 83x50x15mm / 3.3x2.0x0.6in Package List: 1 x Battery Meter 1 x English Manual Note: 1. Please allow 0-2 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List 1 x Battery Meter 1 x English Manual