Had to get a new battery for my ebike as the old one would not hold a charge anymore. Just over a year old and hardly used. Sixthreezero wouldn't even give me discount on a new one because it was out of warranty and they said they have no way to test them. I bought two of these bikes and the other one is just fine for now. I brought both batteries in the house for the winter so they didn't get frozen or anything. Hope it lasts.