Isbell was mayor of Pasadena from 1981-1985 and from 1993-2001 when he reached term limits. He was returned to the mayor's office in January, 2008 for an unexpired term and subsequently was re-elected to a full term in May, 2009.
These are nicads though, probably your gold cart is lead acid. If you find a good cheap local source of deep cycle 6 volt batteries, let me know. I'd say 7 years is a pretty good run for golf cart batteries, esp. if you ran them down several times. You'll do even better if you top them off at 80% or more.
Golf carts have deep cycle batteries so they require an overnight charge. Keep this in mind after a long day of driving, it will have to sit and get charged, as with a gas cart-it keeps going until the gas tank is empty. On a new set of batteries you should average about 20-25 miles to a charge.