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Old 06-02-2015, 04:17 PM   #15
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What batts? Group 24?
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Old 06-02-2015, 04:21 PM   #16
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Old 06-03-2015, 10:53 AM   #17
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Originally Posted by dznf0g View Post
Holding in there....do yu have a meter that tells amp hours used, like a trimetric? Or do you know how many amps are being drawn for the time you're keeping?
My batteries are two Interstate Grp 27 dated 3/13.

When I got home after work yesterday I check the battery voltage from the battery terminals. The wife was just checking the voltage from a 12v socket plug in meter. I found the voltage steady at 12.48.

I don't have a Trimetric. I'd like to have one but after looking at the installation instructions it scared me away. Also I'm not sure where to mount it in my 25fb. I guess I could mount it on the curb side pantry wall above the sink and try to fish wires from the slide out pantry area through the bathroom, under the bedside wardrobe to under the queen bed to where all the wires from the battery come up through the floor.

Placing my handheld clamp on ammeter on the negative battery cable it looks like the fridge on LP, one Fantastic Fan, TV amp on and LP detector was drawing about 2 1/2 amps. I started the test at 7:30am and plugged in shore power again at 5pm.

I'm at the conclusion my batteries are performing well enough not to replace at this time. I have today and tomorrow to change my mind before I take off on my trip.

Kelvin
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Old 06-03-2015, 10:59 AM   #18
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I've seen these charts and sometimes they vary on what is 80% and 70%. I've also read articles stating those internet charts are not correct.

What I may decide as a future project to modify the battery box and convert to two 6v batteries. They can be deep cycled more than the hybrid Grp 24/27/31 batteries. They are about 10lbs heavier each to the Grp 27. Wish someone made a kit for this project.

Kelvin
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Old 06-03-2015, 11:03 AM   #19
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Kelvin,

It appears you're OK...at least for the brief test run. FWIW, I use the chart posted above...some do vary on the exact voltages and their corresponding percentages. That looks like Interstate's chart to me.
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Old 06-03-2015, 11:28 AM   #20
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Originally Posted by KJRitchie View Post
I've seen these charts and sometimes they vary on what is 80% and 70%. I've also read articles stating those internet charts are not correct.

What I may decide as a future project to modify the battery box and convert to two 6v batteries. They can be deep cycled more than the hybrid Grp 24/27/31 batteries. They are about 10lbs heavier each to the Grp 27. Wish someone made a kit for this project.

Kelvin
It is a fairly easy modification to do. See my photos on post #18 of this thread:

http://www.airforums.com/forums/f449...-124829-2.html
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