[Greg]

Sounds like your old house battery setup was 24v and you had all the Vanners so you could run the 12v stuff.

If your new LFP battery is 12v? the answer is “no”.

If the new LFP battery is 24v? the answer is “yes”.

[Paul]

Don

The old setup was two banks of four batts each. Both banks tied together on a post and the three heart 458’s attached to this post. the 5 vanner 60-50 are tied to the same post. The five vanners are tied together with the 12v post in series and ground post in series. I assume this12v lead off of V5 is an input voltage cable. The 24v post on the vanners are strange in that they are connected

V1 to V2

V3 to V4 to V5.

Then V1 is connected to V4 and V2 is connected to V5

with a 24v lead off V5, in or out? (i assume out). But to where or from where i don’t know.

I have always assumed I had a 12v system since the inverter are 12v.

I have three cables going thru the battery compartment wall. One is to the generator, one to the 12v post in the drivers side electrical panel labeled 12v coach and one 12v cable that must go to the 12v coach distribution panel in the rear bay. Two of the three cables have 100amp ANL Fuses, which I assume again are for the generator and the coach post in the drivers electrical panel .

Greg

[Jim/Chris]

It should be noted that Greg has a Beaver which had a battery/inverter set up that was somewhat unique. Beaver conversions were very well done and had an inverter set up that I believe had one dedicated solely to the refrigerator with the other two for the rest of the house.

I believe Jim and Chris have far better knowledge and understanding of Beaver conversions.

[Greg]

How many alternators do you have on the Detroit? what is their voltage?

Your 2 house battery banks must be 24v? batteries hooked up in parallel and series like the 4 chassis batteries, thus the need for all those Vanners, to provide 12vdc to the various house items? I can’t think of any reason for the house dc system to be 24vdc, unless you only have one 24v alternator? thus having to charge both chassis and house banks?

If you convert your house system to 12v, all batteries connected in parallel, you won’t need the 5 house Vanners.

Nowadays Victron Energy and others make modern components(converters, chargers, etc) to help convert your system(s)

What all are you trying to accomplish?

[Greg]

Our former Beaver bus had three Heart inverters. Two were inverter chargers , the third inverted only and ran the frig (Amana) and microwave. And with OTR operational, there was a relay that cut off frig’s compressor. Six house batteries, powered house and genny start

[Dick]

I have one alternator on the engine. I have a 3 way RV style refrigerator.

the Beaver folks were mot dumb but I cant figure out this Vanner situation. There is no way the Vanners could be doing anything because they are in series with two cables coming off the set up. Two fuseless cables one 12 and 24. My understanding of the Vanners is that they make 12v out of 24 not 24 out of 12.

Im in Quartzsite and when I get home next month Ill disconnect the two cables and see if the have in coming or out going power and also see what does have power with he disconnect.

I could not have had a 24 house because the inverters are 12v and I don’t think anyone was making 24v system s back in 1992.

[George]

Here are the drawings I’ve made of the circuit

SW = switch

Hall = amps senor

SC= solar controler

CCS = command control center the beaver overhead display

[Clint]

24vdc cable to Vanners is to charge house batteries when the engine is running, hence the need for the Vanner to decrease voltage.
so I still need them even if I switch to LFP batts. Assuming I can still charge LFP batts with Vanners.

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Clint & Tammy Summers
2000 XL 45 Country Coach (rivets)
1977 FC31 Bluebird Wanderlodge (more rivets)
Vonore TN