What Smart charger do I need?

Amperes capacity usable 110 AH

Amperes charge initial acceptance around 70

The setup can easily accomodate an eighty amp rated charger.

But most smart chargers are junk for generator duty. There are a couple of models that work better than others. Some members here will clue you in. The Schumacher if it is a true manual charger is valuable. Keep it stowed aboard. The least offensive smart charger has the moniker BOONDOCKER.

Chime in gang. Gotta go back to work on the BORG.

What kind of rig do you have? It should be equipped with some kind of converter that should charge your batteries.
Your schumacher can out put up to 20 amps but that is not enough.

assuming 50% state of charge and 232 amp-hours the existing charger at ten amps would need to be connected for at least 13 hours

An alternator puts out 100-150 amps.
Your charger puts out 10 amps. Think you mite need more than 2 hrs to charge 230 amp battery ??

What instrument are you using to determine what is going on?