Charger/Converter questions...

The PD9130 might be too low in amps for "fast charging" your battery bank, if you have plans to do generator powered recharging off-grid. To keep generator time short, you want more charging amps. Eg, two 6s or 12s with about 225 AH will accept 60 amps easily.

Doubling the charging amps does not halve the time, but it sure helps reduce gen time. Somewhere around 25 to 30% amps to AH of bank is good. Higher percentage than that is more than the batts can take.

6 hours in the compartments of the trailer later.....

-Removed Magnatek Converter. Why have two. I didn't even test it yet, I will bench test later and report back on that..
- Cleaned up wiring job on the newer PD9130.
- Opened Generator Transfer switch to ensure cleanliness, etc.. All was satisfactory.
- Started post maintenance testing and discovered the following: When generator ran I had 12v in coach, on battery power I had 12v in coach, and while plugged in to shore power I now have 12v in coach. I did not do anything other than re-position things and disconnect the old Magnatek Brick... so why do I now have 12v on shore power but I did not before? Is it possible that the two converters were fighting each other or maybe the magnatek converter was truly junk and back-feeding the transfer switch and not allowing it to close in the contacts for the shore power?

Anyhow, everything works, everything looks neat and orderly, and I am happier that it is all simplified now. I will bench test the old Magnatek converter tonight just for piece of mind (science experiment findings to follow)...

On a guess. Ther PD is wired direct to the battery on the battery side of the cut off switch. The magnetek is not working at all (Well. they never did work all that well) IF so. just turn the battery switch on.

Fact. Righ now if the park lost power I'd lose my A/C. everything else (Well the water heater If I wanted hot water might not work) TV would continue. Radios. Computers, Lights.. I'd have to plug my cooker in a different outlet. That's all... How do I know this.. happened several times over the last decade and a half.

Think of it this way...

Magnatek does NOT make a CONverter

They make a battery destroying PERverter. It cannot charge a battery. It merely plays a game of "Tickle Me Elmo" with a battery. It's better than nothing as an emergency spare for a real charger

Thanks! That is the kind of info that I was looking for. The evidence against the old Magnatek converters was something that I had seen, but not being a electrical guru I was unsure if it was really all that bad or just not the preferred choice for converters..

I will do more investigating and make sure that both converters are in fact in service, but from my minimal investigating this weekend they appear to be... you've got to love buying used stuff and scratching your head trying to figure out what the thought process was behind someone else's modifications.

I will investigate and return with more info before I delete the old Magnatek and wire so that the converter can feed 12v to the coach as it should no matter where the 120v is supplied from.

775 makes a good door stop. 9130 makes a good converter and battery charger. Make sure you have the add-on wizard for best performance.

http://www.bestconverter.com/Charge-Wizard-Flooded-AGM_p_15.html#.XPVEsBZKiUk

Amazing that a 2007 RV would have one of those old 775s! Anyway, yes, use the PD converter, not the 775.

Battery disconnect switch should remain closed all the time except for a special rare reason. the battery cannot supply the rig 12v with it open, and neither can the converter charge the battery.

The PD needs to be re-wired so it gets 120v input whether on shore power or on generator, so it can supply 12v to the rig even with no battery or with a battery but where the PD does all the work instead of the battery. (12v things will take the 13.x voltage from the converter instead of the 12.x voltage from the battery)

Here is some background on the old 775 and much more info to read in your spare time:

https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28037139/print/true.cfm

Have you checked to see if both are actually connected and functioning?

Personally, I would use only a PD converter instead of a Magnetek. I have had to replace every Magnetek I have ever owned because they were "cooking" the batteries and/or had terrible ripple current.

Good luck-- Mick