ITEM NAME:2S-6S 2-6S RC Lipo Battery Low Voltage Alarm Indicator Meter Checker Tester I6K2 2S-6S 2-6S RC Lipo Battery Low Voltage Alarm Indicator Meter Checker Tester I6K2 For RC model battery diagnosis and measurement use. Auto display the voltage with Arabic numberals It allows you to learn the working state of your battery, so your battery will not overcharge and over discharge or damage Used for 2S-6S(7.4V~11.1V)Li-Po Battery Little current consume Quantity: 1 pcs Weight: Only 5 gram, can be used on model plane Package Included:1 x Lipo battery portable Voltage alarm Note:Light shooting 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.