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Old 10-19-2017, 10:24 AM   #31
Javi
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Yeah... I just grabbed the first one in a Google search.. I have a Fluke that does a pretty good job.. But 35-40 years ago I had a Snap-on battery draw meter that you held on the battery cable to measure draw when cranking or searching for a drain.. that worked pretty good too..
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Old 10-19-2017, 12:38 PM   #32
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MerlinB I had the same initial thought. I was an adjunct faculty at a college. Conducted several courses in electricity for several years, my trusty fluke clamp on ammeter was ac only. I used my trust old Automate with a shunt for dc. It was the size of a toaster and had a dwell meter. The dwell meter wasn't for testing pondering thoughts but for setting the gap on the ignition points. Now I'm showing my age!
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Old 10-22-2017, 08:43 PM   #33
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Quote:
Originally Posted by B-O-B'03 View Post
My 6V GC2 are 230 AH?

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so are all 4 of mine, whats you point?
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Old 10-22-2017, 08:44 PM   #34
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Originally Posted by chuckster57 View Post
FIRST post said 2 new batteries at 105Ah each.
yup, but didn't say the voltage which makes a huge difference in total capacity
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Old 10-23-2017, 03:38 AM   #35
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I have worked in the automotive repair field for 20 years, if you have ever had your charging system, starter draw or battery load tested the tech used a Volt meter and a clamp on DC amp meter.
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Old 10-23-2017, 04:16 AM   #36
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Originally Posted by Stircrazy View Post
yup, but didn't say the voltage which makes a huge difference in total capacity
You need to read the entire thread to get the complete history. In post #1 the OP indicates that they are "deep cycle batteries" and rated at 105 amp/hrs each. Then in post #16 he confirms that they are 12 volt batteries. Sometimes everything isn't included in the first post, members ask for clarification or added information and it's typically provided further "down the line", as is the situation here.
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Old 10-23-2017, 08:14 AM   #37
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so are all 4 of mine, whats you point?
My point was, CG2 batteries have way more capacity that 105AH

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Old 11-21-2017, 07:03 AM   #38
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I have a current problem with my batteries. Its been at storage for a couple weeks with the battery offline using the OEM disconnect switch. On Sunday I bought it home to get it ready for a camping trip Thanksgiving weekend. When I got home Monday night from work the batteries are dead, same thing last night I went to check them this morning and dead. I just can't understand how the batteries can sit just fine at the storage.
I had the coach running on generator last night just to charge batteries. Brought it up to 13.4 and then turned off batteries. Our coach is about a month old since we have taken ownership I see that we have Interstate batteries and the dealer had to wire up a second battery when we took delivery. Since these batteries have been completely dead for two days now after charging and discharging do I need new ones?
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Old 11-21-2017, 08:38 AM   #39
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IRV2, it would be my opinion that you would NOT need new batteries just because of what has happened so far. However, they certainly have earned the title of "to be watched very closely." I would be more concerned with why they have no charge after a very short period. I might be inclined to take them out and have one of the auto parts stores do a quick load test. As John says, YMMV.
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Old 11-21-2017, 08:39 AM   #40
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IRV2,

You MIGHT need new batteries, and you may not. It depends on whether they can be "saved and recharged" or whether the depth of discharge was so great that they were damaged beyond repair/recharging.

I'd first check to make sure that your OEM battery cutoff switch is ON. The converter will not charge your batteries if that switch is turned off. Next, check to be sure your converter output is correct. With the batteries removed from the circuit, you should have 13.6 VDC on the battery cables when connected to shore power. You may have blown a fuse on the converter that is preventing current to reach the batteries.

If the battery cutoff switch is ON, there is 13.6 VDC at the battery cables and the batteries won't hold a charge, then I'd remove them, take them to a battery dealer and have them load tested.

Depending on what you find, hopefully, one of the above "conditions" will fix your problem.

Let us know what you find and good luck.
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