The Mountfield Freedom 48 range of cordless garden machinery can use 2 sizes of 48V Lithium Ion batteryThe MBT 4840Li is 48 volt and 4Ah.The battery slots easily into either the handle or body of the machine.120 minutes charging on the standard charger. This battery will fit the following Freedom 48 modelsPrincess 34Li lawn mowerPrincess 38Li lawn mowerMC 48 Li chain sawMH 48 Li hedge trimmerMT 48 Li grass trimmerMB 48 Li brush cutterMBV 48 Li blower vacuumMM 48 Li pole pruner hedgerMR 48 Li tiller