Cut a couple of pieces of 1/2" copper tubing about 3" long, flatten about 1" of one end, and bolt them to a piece of plastic or Teflon around 1/4" thick. Attach the Teflon to the generator housing with a couple of big sheet metal screws. Use the tubing as a connector for the booster clamps and wire the flattened area where the tubing bolts to the plastic to the battery terminals with #8 wire and soldered ring connectors.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!