Purchased a lith-ion battery two months ago. Asked for lead-acid. Was told out of stock. Did`t want lith, but decided to try. Was told ready to go. Dead when I installed. I have very good charger. Would not crank over engine. Tried to exchange for lead-acid. Told two weeks wait. Accepted another lith. Still would not crank. Refused to give refund. Another shop said lith not for 49cc scoots. Had to sell on eBay, same price. These people are very shady. Almost threatened stupid kid works there.