Texas 4.0 Ah battery battery to 58v series. Recommended to leaf blower, chainsaws past, the laws lawnmowers, as require additional high battery capacity. But can also used to dè other handheld products in 58v series. Battery cells is produced of samsung. Engine specifications voltage : 58 volt operation charging time : 2 hours battery battery type : lithium battery battery capacity : 4.0 Ah dimensions net weight : 1,7 kg packing width : 20 cm packing length : 12 cm packing height : 16 cm