Well it's the same amperage ( rate the charger put amps back into the batteries )
It's the same voltage 120vac - 12v
If it physically fits I think it would work.
It's certainly designed to convert 120 to 12v and charge lead acid batteries.
In the ebay advert is a link to the installation manual.
Gives details of charging voltages etc etc
But I am not a qualified electrician so please take advice if your unsure