have 1/2a and .40 sized starters so cant help there,, but a real handy item I have found is one of the jumper batteries,~$35 from walmart use it direct , field charge your other batteries, jump off the other guys cars that leave their doors open all day and kill their battery, all kinds of uses, I bought it cause I am currently restoring a 91 miata,, plus I can put it in the trunk, leave it hooked up and have it charged on the ride home....or plug it in when I get there....Rog