IN FIELD BATTERY CHECKDisconnect the power cable and take the charger to the game – the portable display will check battery voltage on the fly, no power necessary.FAST CHARGINGDouble the speed of our previous model (1500mah per hour), this version will safely charge both lithium ion and lithium polymer incredibly fast (FCC, CE, RoHS, WEEE Certified) BALANCE ALL LITHIUMBalance ports support the 7.4v, 11.1v, and 14.8v, which smart balances each individual cell to its maximum life.