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.
New models of electric golf carts with updated batteries can go up to two rounds of golf on one charge. Electric golf carts also do not release harmful emissions that pollute the environment. Batteries that are properly cared for need to be replaced every five or six years. Replacement batteries can cost up to $600.