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 / Servo / 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 / LiFe / Li-ion / NiMH / NiCd battery pack, and quickly check whether the battery needs to be 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: Item Type: Battery Meter Function: Battery Capacity Detection Built-In Resistance Battery Discharge ESC / Servo / PPM Tester Colour:Blue Material:plastic Package Contents: 1 x Battery Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.