This is the Hitec Lithium Battery Voltage Checker & Equalizer. With an easy-to-read LCD display and built-in safety features, the convenience and accuracy of this tool can’t be beat. The battery checking function precisely reviews the voltage of each cell of a lithium polymer pack while displaying the remaining total capacity. The balance operation equalizes the individual voltages of each cell until the difference between each reaches 0.01 volts or less. Although most LiPo packs' balancing ports will plug directly into the LiPo Checker, Hitec also included an adapter for Thunder Power and Flight Power style plugs. Please be certain to use lithium polymer battery packs up to 6 cells only! Features: LCD Cell Voltage Display Digital Battery Capacity Display Auto Shut Off TP/FP Adapter Wrist Strap Specifications: Applicable Battery Pack: 2-6S LiPo Case Size: 70 x 38 x 11mm Voltage Display Tolerance: +1-1.5% Weight: 23g Voltage Display Resolution: O.O1v Operating Temperature: 10 ~ +45'C Voltage Display Range: 0-5v Storage Temperature: -20 ~ +60'C Balancing Current: 50mA