Original Super73 48v 20ah Samsung cell lithium battery in excellent condition. This was removed from an RX SE with only 320 original miles to upgrade the electrical components on the bike with a 72v system. This battery will work on all R, RX, S2, and ZX / Miami models that have the PRO base. This is the latest version with the accessible fuse underneath. There’s only a couple minor signs of cosmetic wear from average use. It still works like new and gets full range. It comes with 2 lock keys. Carefully packaged and fast shipping. View my feedback and buy with confidence. Thanks This item is certified to meet UL 2849 safety standards