How to safely connect my batteries for new 24v inverter

[MarkH2159]

I have 4 x 110 Ah Lead Acid domestic batteries which are wired in parallel through an isolator switch.

They are charged by a 70 Ah alternator and the boat has an Adverc charge management monitor fitted.

The battery bank supplies 12v to the boat domestic systems.

 

They are also connected at 12v to a Stirling Marine Combi Inverter Charger giving 240v 1600w from batteries or 12v 65A battery charging when on shoreline.

 

I am considering changing to a hybrid inverter which is rated at 240v 2400w from 24v with 50A solar mppt input and 40A battery charging capability.

 

Question is - How do I connect the four batteries to provide a balanced 24v to/from the new inverter charger and also keep the 12v systems, alternator, adverc, etc balanced across all batteries and with the correct isolation switches?

 

Thanks in advance.

[nicknorman]

You can’t easily do that. The inverter has to be fed from batteries in a 24v configuration. That means you can’t connect a 12v alternator to them. You would have to replace the alternator with a 24v version. Slightly easier to supply 12v boat systems from 24v via a dc to dc converter.

 

But surely it would be vastly simpler, easier and cheaper to fit a 12v hybrid inverter?