Slim Type Lithium Ion Battery PacksGreat for tight frames / otherwise difficult to mount battery3D Printed Thick and Durable Casing, weather resistant, durable.36V / 48VSee Beast 2.0 for 72V VariantsCell Type Used:5000mah Cell (Samsung 50GB/50E/50G)Cell Capacity: 5000mahCell Discharge: 10-15AHigh Discharge Packs use the Molicel P42A CellCell Capacity: 4200mahCell Discharge : 45AShort Packs using >1000 WattsReccommend High Discharge PackOther packs using >1500 WattsRecommend High Discharge PackLong Batteries are approx 19'' long48V Short Pack is 14''All Packs are 3.5'' Width, 2'' Thick