I got one of these in my ski when i got it. It crapped out. I called and spoke them. They agreed to give me a 40% discount if I had it tested and it was bad. I was very clear I wasnt the orginal purchaser. I was pumped. I got it tested and called back. I spoke to the warranty person Brian. Asked for my original receipt and I explained I didn have one and that they had agreed to a 40% discount. She said no warranty for you. I asked her to talk to a manager. Aweek goes by and I called back and talked to her again. She said the manager was still at lunch. Guy enjoys week long lunch breaks. They wont honor what they said. This lady is a loser that processes warranties. Buyer beware. The lead equivalent amp hours is not accurate in my opinion.. Im going back to an agm or any other company.