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.
Depending on how much the golf cart batteries are discharged will determine how long it will take to fully recharge them. You can certainly run your batteries down to 80% or so if you are using it for several rounds of golf or for a long trip on your golf cart but this may shorten the life of your batteries. Avoid deep discharging whenever possible. Be sure to charge the batteries fully after every use.