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Old 11-24-2002, 11:46 AM   #15
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shut off for univolt charger

to quote from earlier post-

Having and using a battery switch is imperative. It is great to be connected to shore power and be able to NOT charge the already fully charged battery. Frank

so where/ how is the best way to put that switch in? In order to allow shore power and not continue to charge the house batteries?
My house batteries now have a ground disconnect blade on each...would that do the trick ?Thanks
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Old 11-24-2002, 01:19 PM   #16
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If that is the only ground wire it will not continue to charge, but you won't be able to use the 12v battery with it open either.

John
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Old 11-24-2002, 01:34 PM   #17
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I sure wish I had enough justification to replace my Magnetek converter with a 55-amp Inteli-Power with Charge Wizard. With higher boost voltage, it can charge a lot faster and with lower float voltage, it won't use as much water in long-term storage. I also like the Equalize mode every so often.

Of course this assumes the parked trailer has access to 120VAC and the batteries aren't being removed from the trailer.
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Old 11-24-2002, 01:59 PM   #18
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Alan,

You might want to see if your MH is set up like mine. I have a single breaker that runs only the univolt. I use it like an on/off switch to controll the charge and noise. If you don't have that as an option, you could get a multioutlet power strip and use it between the univolt and the wall outlet it is plugged into. Then you could use the switch on the power strip for control.

I also have Ground disconnect switches on both batteries so when I store I can disconnect quickly to eliminate all drains on the batteries.

BTW even with my controlling of the charge and not leaving the univolt on all of the time I cooked my 8 month old coach battery dry. I checked prior to going to the shuttle launch and it was almost dry. Filled it up and used it, but it is weak. I will see if I can bring it back to life, but I doubt it. I have to remove my engine battery to get to the coach battery and both of them are a bear to take out. Checking once a month is a great plan, but it takes an hour!
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Old 11-25-2002, 08:18 AM   #19
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thanks guys for the info.
So if you shut off the univolt, can you still acess shore power for the outlets, etc?
I thought the univolt not only charged but also managed the ac coming in, and converted to 12v for the outlets where needed.
am I confused?
My coach batteries registered 11.9 yesterday after staying on my little 10amp charger quite awhile individually. They came up further after I ran my generator for an hour or so, but I do think they are fried. The little green eye is still there, but they don't want to hold a full charge. My univolt was putting out 13.6v, when I disconnected the batts to check it.
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Old 11-25-2002, 12:24 PM   #20
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Alan-

Is that the same charger you posted about that was only putting out 2v? Did you check the voltage with it on the battery? Maybe it is shot, will put out good volts until you load it, but won't put out under load. Thinking this because the univolt charged your batteries when the charger wouldn't.

If the univolt is off, you are running 12v circuits off the battery, but should still have 120v in the other circuits as long as you have shore power and the breakers are on.

John
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Old 11-25-2002, 12:43 PM   #21
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Thanks John. The charger was putting out 2v until I bypassed the shut off circuitry in it, it now puts out 13.5v.
If the Univolt will not be damaged by disconnecting my ground blades that would be the easiest way for me to stop it from charging when I am hooked up for shore power.
I will investigate where the switches are to shut off the charger also.
Took the motorhome for a cruise yesterday and the batteries came up quite a bit, enought to light all my interior lights by the time I got back home. I will bet though they won't hold that charge. Will check it out after work today.
How is your interior coming? Still on hold for awhile?
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Old 11-25-2002, 01:03 PM   #22
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Early next week I start back on the interior. I need to get a temporary shelter (snow is early this year) built, Thanksgiving, etc. Along with the work here I ended up putting a new leach field in at my parent's house and some other odds and ends there. Sort of like withdrawals walking by and not having the time to do anything but look. Next week!!!!

John
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Old 11-25-2002, 01:10 PM   #23
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great, I and others I am sure look forward to viewing your handiwork- its been impressive so far.
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Old 02-15-2006, 01:02 PM   #24
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Battery charger

Quote:
Originally Posted by 74Argosy24MH
Battery Minder is a maintainer not charger, it probably would take a several days to recharge a battery. But if it is sitting for months at a time it will keep the battery charged without overcharging it. If it is on a circuit with power, it will maintain the battery, univolt or not. It probably will not charge a battery overnight if it is deeply discharged.

The engine alternator has a regulator, it will not overcharge the house battery any more than it overcharges the automotive battery. If you are using an isolator it has a loss and the voltage at the batteries will be slightly lower than the alternator output.

I like my StatpowerTruecharge charger (now Xantrex). They are also a float charger so they will not destroy the batteries. They are not cheap, but neither are batteries, and proper charging and maintenance is what determines their life.

John
The direct answer to your question is above--Xantrex, a Canadian Company, makes the best stuff, period. It isn't cheap, but you will get what you pay for. You may be able to save a few $ buying on ebay or other auction sites--some, if not all of the auctioned ones are factory rebuilds, but they come with the same warranty as buying directly from Xantrex if new.

I have a Xantrex battery charger on a sailboat, installed 5 or 6 years ago which is still charging my two battery banks to the battery manufacturer's specs--the batteries went in the same day as the charger.

Rob Alley
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Old 09-16-2007, 07:04 PM   #25
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I replaced my univolt (was only putting out 2V) with a unit from Intelipower,
Intelli-Power PD9145A 45A Electronic RV Converter/Charger
I got a refurbished unit for something like 1/3 the price of a new unit, same warranty. It has a "charge wizard" in it, for smart charging the deep cycle battery.
So far, so good, havn't gotten to use it much yet, just got it hooked up.
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Old 09-29-2007, 12:41 AM   #26
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Converter Mistake or not?

I bought a model 9200 inteli-power, 9245C 45 amp., to replace my original univolt 45 amp., but this inteli-power only has one positive/negative terminal. My univolt has eight terminals and the camper has a heap of wires that need a connection terminal. How in world do connect all these wires to just two terminals.
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Old 09-29-2007, 06:00 AM   #27
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Quote:
Originally Posted by rbestsc
I bought a model 9200 inteli-power, 9245C 45 amp., to replace my original univolt 45 amp.
It sounds like you bought an Intellipower to replace both a Univolt and the Univolt 12V distribution panel.

There is a kit you can buy to add back (and update) the distribution panel, or I think you can re-use the original fuse panel by cutting the old one loose from the original Univolt.

Here's a link that explains it. There are also tons of information here on the airforums if you are good with using the search function.
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Old 10-01-2007, 08:46 PM   #28
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Thank you very much Mark, this link really helped but most of all I like the idea of cutting away the fuse panel from the univolt.
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