Inverter/converter advice needed

[Jeremy9107]

I Read through some forums and decided my dead battery is probably a result of overcharging as I have the original converter in my 1970 caravanner (I'm assuming its single phase) and am usually plugged into shore power. Most of those forum threads ended up with the owner of the dead battery replacing their converter which solved the problem. I want to change mine to a 3 phase but want to be sure the one I get will be compatible with my older model AS. Any advice on a good product to buy that won't break my pocket book?

[Airtandem]

call Andy @ Inland RV

[TG Twinkie]

The new converters are not "three phase". They are 3 stage.
I installed a Progressive Dynamics 9245 to replace the original 4 years ago. And haven't looked back.
It is a relatively easy project. You can by a new converter on eBay. Many brands are available.
Plenty of help here for DIY.