I seem to go through battery's like hotcakes. My battery now is in question yet again. Last season almost exacly a year ago (6/10/10) I was in a pinch for a battery & bought one at walmart. I brought it home filled it & then put the battery on my Deltran battery tender to a full charge. The next morning I installed it into the Wee. I did all the right things. December came I put the bike away with a tender. This battery has never been fully discharged. Is their a difference in battery quality? I know walmart does not make that battery.