high guys i have as above a kaiser 125 2007. bought it last year with a few bits needing attention electric start choke and a few other bits, BUT my main problem it the battery will not hold a charge, i replaced to the old one that was in there and the new one was spot on up until January, now before i go and buy another battery i wanna know if anyone else had the same issue and was able to resolve it? or do i buy another battery?

cheers guys rich