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Old 01-16-2008, 09:01 PM   #15
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Okay, stop beating up the new guy

I only reported what my monitor panel showed (full charge) but what 2air says makes sense. That probably was the condition of the batteries, but we plugged into a power post at Topsail and didn't worry about it anymore.

I have read that deep cycling your batteries periodically is better than leaving them on a trickle charge all the time. So I guess that counts for a deep cycle.

Tank Heaters. On the side of my bathroom wall are two switches that turn on the tank heaters. One for Black and one for Gray/Fresh. I was shown these at delivery and the tech explained that these should be on when the temps are freezing (driving or parked). They light up when not plugged in, so I assumed they ran off the 12v system. Is this not correct?

Randy
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Old 01-16-2008, 09:12 PM   #16
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Quote:
Originally Posted by SilverCabin
I have read that deep cycling your batteries periodically is better than leaving them on a trickle charge all the time. So I guess that counts for a deep cycle.
You shouldn't discharge a lead-acid below 50% -- that will affect it's life & capacity.

OEM tank heaters? I thought they were 110V -- maybe got that from NeatAirstream in a post? For sure they won't do much off of batteries if they are 12V! Talk to your dealer?
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Old 01-16-2008, 09:50 PM   #17
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Quote:
Originally Posted by CanoeStream
You shouldn't discharge a lead-acid below 50% -- that will affect it's life & capacity.

OEM tank heaters? I thought they were 110V -- maybe got that from NeatAirstream in a post? For sure they won't do much off of batteries if they are 12V! Talk to your dealer?
I was recalling an Article I read in Airstream Life (Fall/Winter 2006). I looked it up, and stand corrected. Here's what it says:
Quote:
If a new deep cycle battery is routinely discharged to 10% or less remaining and then properly recharged (i.e. initially a high current bulk charge, followed by lower topping-off-current-charge), it will have an average life of about 300 - 350 cycles. This amounts to a few years of typical useage in most Airstreams.

On the other hand, if that same battery is routinely discharged to around 40% to 50% remaining and then recharged, that battery will have a life span of around 3,000 cycles.
My question now is: If the monitor was showing red in steady state and flashing red when something was on, what was the battery level? Especially since we now know that an indication of full charge may not be necessarily so.

I'll have to see if I can find anything about those suspicious heaters.

Randy
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Old 01-20-2008, 03:59 PM   #18
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How long dry camping on 2 batteries

I realize that it depends on how much usage, but my wife and I want to do some dry camping this spring. Could I expect the batteries to last 4 days with just basic lights at night, water pump and flushing the commode, radio etc?
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Old 01-20-2008, 04:04 PM   #19
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Quote:
Originally Posted by tslanier
I realize that it depends on how much usage, but my wife and I want to do some dry camping this spring. Could I expect the batteries to last 4 days with just basic lights at night, water pump and flushing the commode, radio etc?
We have only one battery in our trailer and can get four days out of it if we do not use the furnace.
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Old 10-18-2008, 07:07 PM   #20
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good thread... just installed the 2020... used the 100A shunt... also ordered the 25' connector cable... not sure if I got the right black wires connected to G1 and G2... no markings at either end (whole length sleeved), and i didn't have my tone generator... but here's what i'm getting:

kill switch 'off' .05
kill switch 'on' everything off .05 (so far so good)
backlight on thermostat .14
systems monitor 'on' .12 (jumped to .15 when checking status for LP only)
front sofa fluorescent .67
front sofa direction spot (high) .47
sony stereo receiver .52
disc changer at rest .65
disc changer cycling .93
front fantastic fan (high/3) .92
water pump 1.60
(1)bedroom sconce 1.81
all fluorescent fixtures 4.57
all lights inc. fluorescent 11.70
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