A friend had a battery shop for a couple decades starting in the early’70s. They hit all the service stations, garages and all other places that installed batteries in all the towns in several counties.He bought the old batteries for scrap price’s. Batteries that looked good went on a set of shelves that would hold 20 or so. A custom made daisy chain wire (think old time string of Christmas lights) with small nails wired to the main harness was used to slow change all the battery’s at once (the nails were tapped into the post). All the caps were off and any with non bubbling cells after a day or so were pulled and sold to a lead recycler.

Batteries that accepted a charge were cleaned up and sold as rebuilt batteries. When in fact they were good batteries to start with that just needed a change.

So yes to the OP’s question along with the good advice above. The Battery Shop did rebuild batteries but not for little cars/trucks.

RonR


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5