1,Equipped with a large LCD display, it can visually display the battery type, remaining power, total voltage, etc. 2,Support battery capacity detection, voltage balance, built-in resistance, battery discharge, ESC or Servo or PPM test. 3,Helps optimize battery performance and extend the overall battery life by ensuring the balance of individual batteries. 4,Display the estimated capacity and voltage of LiPo or LiFe or Li-ion or NiMH or NiCd battery pack, and quickly check whether the battery needs to be charged before use. 5,Support 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. Condition: 100 percent Brand New Item Type: Battery Meter Material: Plastic Function: 1. Battery Capacity Detection 3. Built-In Resistance 4. Battery Discharge 5. ESC or Servo or PPM Tester Product Size: Approx. 83x50x15mm or 3.3x2.0x0.6in 1 x Battery Meter 1 x English Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.