I say you got one bad battry. How old is the one you replaced? Nevermind that, just go buy you 2 new 29's or better and be done wif it. Make sure they'll fit before you buy em tho or youre gonna be whizzed on when you get home. Also, buy you that 3 bank charger you've always wanted and mount it to the underside of the storage compartment lid. Seent it done and it werks fine.