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Author Topic: House Battery Bank (6 volt?)  (Read 3196 times)
muldoonman
1991 Prevost 8V92TA
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« on: September 01, 2013, 10:08:03 AM »

 Thinking on putting (2) (Lifeline GPL-6CT ) 6 volt in series batteries for house bank. Wonder if Magnum 2500 watt (2512) inverter will charge them. Have sent email to Magnum, but thought one of you smart guys would know.

  Don't dry camp and Just need to run house fridge, house lights and tv if needed for short periods of time. After 4 Chinese 8D AGM batteries quit after 4 months (chink junk) Have 2 flooded type 31 12 volt under now with no problems. Have 15 kw Kubota for power when not plugged in to 50 amp shore power.
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luvrbus
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« Reply #1 on: September 01, 2013, 10:19:44 AM »

That  is only going to be 300 amp hrs Glen is that enough ?,the inverter will only see the 12v side with 2 -6 volt batteries in series the 2512 will charge the batteries no problem there  
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muldoonman
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« Reply #2 on: September 01, 2013, 12:39:03 PM »

Should be Cliff. Just wondering about the charging part.  Never leave coach without being plugged or genset running. Maybe a few hours at a time. They say each battery has 300 amps would that double to 600 amps paired? This thing had 6 8D's when I bought it in the custom box.
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luvrbus
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« Reply #3 on: September 01, 2013, 01:07:41 PM »

Two 300 amp 6 volt batteries  = 300 amps at 12 volt
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muldoonman
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« Reply #4 on: September 01, 2013, 01:17:21 PM »

Gotcha, Thanks Cliff.
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sommersed
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« Reply #5 on: September 02, 2013, 09:26:08 AM »

"(chink junk)" - - - - - Really?


Ed
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chessie4905
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« Reply #6 on: September 02, 2013, 10:00:31 AM »

You sure that it was the batteries and not something you did or didn't do?
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muldoonman
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« Reply #7 on: September 02, 2013, 03:04:58 PM »

Well they all quit taking a charge one by one and lost volts down to 2 or 3 volts, one at a time over 5 or 6 months. Took the last one out showing 10 and a half volts (which is about what they had when they showed up) and it lasted a week and went dead while on Automatic charger on bench.  Put 2 Type 31's back in place and they have been in for several months. They (31's) are sitting 12.8 to 13 volts anytime i check them. The mechanic (tech) configured Magnum Inverter both times on batteries he installed by there manual.
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hargreaves
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« Reply #8 on: September 02, 2013, 08:30:48 PM »

Ya  Ed, some people are really ignorant! 

Gerry
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now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
pvcces
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« Reply #9 on: September 02, 2013, 10:30:26 PM »

I think that you ought to spend more time figuring your system out; I have an idea that you will find out that it needs some changes. Running a house refrigerator is one of the more demanding uses of a house bank. An inverter will run one, but not for very long.

For what it's worth.

Tom Caffrey
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Tom Caffrey PD4106-2576
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belfert
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« Reply #10 on: September 03, 2013, 05:59:49 AM »

I run a house refrigerator off the inverter in my bus.  I can run the refrigerator for several days if nothing else is running.
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Brian Elfert - 1995 Dina Viaggio 1000 Series 60/B500 - 75% done but usable - Minneapolis, MN
luvrbus
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« Reply #11 on: September 03, 2013, 06:18:22 AM »

I here about the house type running long periods off a inverter and battery banks,I know at Quartzsite people with the house type spend a lot of generator time every morning charging batteries they only ones that don't run the generators are people with propane or the Sun Frost DC models or other brands

 Not unusual to hear the auto starts start all night long
« Last Edit: September 03, 2013, 06:20:59 AM by luvrbus » Logged

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muldoonman
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« Reply #12 on: September 03, 2013, 07:07:52 AM »

All I need is to run it a few hours at most. Always plugged or running gen set.
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pvcces
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« Reply #13 on: September 03, 2013, 10:21:55 PM »

About 35 years ago, somebody gave me a non working Norcold, about 4 cubic feet. It had a built in inverter and used 12 DC power to make 24 volt AC that the compressor used.

I repaired it and found out that it only took about 60 watts when running. A  1 1/3 kwh golf cart battery, such as a T-125, could that kind of a load for about 20 hours. I don't know if the new ones are more efficient, but the old ones were pretty good.

In any case, it's easy to measure the power they consume and to plan for it. Then, you won't have dead battery problems all the time. If you do your calculations in KWH, it gets real easy to figure out.

Tom Caffrey
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Tom Caffrey PD4106-2576
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« Reply #14 on: September 04, 2013, 03:55:08 AM »

so what is watts of a 120V fridge that "says" it uses 382 kwh per year?

What is math problem?

using watt=kilowatt-hour/hour

.04=382/8765.81

I know this is wrong, fridge runs fine on 750 watt invertor; will not run consistently on a 500 watt one (I have a 1500 watt hooked up now figured about 85% of capacity)

so what am I doing wrong?

Don't say the math
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Doug
Mnt City TN
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