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Old 11-25-2020, 08:40 AM   #1
Join Date: Jan 2018
Posts: 44
24v battery bank?

Has anyone here converted their coach battery bank to 24v instead of 12v?

My Trojan T-105's are near end of life and I have ordered eight Battleborn batteries and I am trying to decide on the 12v .vs. 24v Victron Multiplus Inverters.

There are advantages of switching to 24v bank (smaller wires, less current, less heat, better efficiency, increased capacity on my solar controllers)

But there are still 12v based systems in our coach. Alternator, B.I.R.D., Onan generator starting motor, slide motors, who knows what else?

I can use a Victron 24v to 12v, 70A converter to run most of it. But that won't handle the load of the Onan starter motor. Maybe I could rewire the Onan to use the chassis battery, or install a separate starter battery for the Onan.

What are your thoughts?
2006 Travel Supreme Select 45' DS14
2009 Jeep JK Wrangler
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Old 11-25-2020, 08:45 AM   #2
Senior Member
Monaco Owners Club
Join Date: Sep 2014
Posts: 3,836
You asked;

I would put this at the very bottom of my wish/want list. You're going to get 5-10 years out of your new batteries and I can't see how you win by converting.
Hopefully someone will come along and educate us both.

Good luck.
1996 Tioga Class C
400 amp/hrs solar, Trimetric

2007 Monaco Diplomat 40 PDQ
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Old 11-25-2020, 09:29 AM   #3
Join Date: Jan 2018
Posts: 44
Actually, I will probably get 20 years lifespan out of these LiFiPO4 batteries.
2006 Travel Supreme Select 45' DS14
2009 Jeep JK Wrangler
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