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.
All of the new electric Club Car golf carts use six 8 volt golf cart batteries. This provides a total of 48 volts. Other manufacturers use six 6v golf cart batteries or four 12 volt golf cart batteries. The older models like mine, which is a 1987 Club Car use a 6 volt golf cart battery. The golf cart battery box holds a battery pack of 6. The combined voltage from each of the 6 batteries makes up the total golf cart voltage. This gives me a total golf cart voltage of 36. The power and longevity of the 6 volt battery has served me well these 15 years. Playing 36 holes of golf on one charge is no problem. Or using it to get across town.