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Is my math wrong?? My 200 watt panels are not even close to 200 watts..
Please stop the bickering about Sams v Walmart and East Penn v Deka.  Go start another thread.  They are free.  

The original poster has had a failure of the electrical system.  Actual useful suggestions are necessary.  Bickering that clouds the issues and confounds the situation is not helpful.  

The problem seems to be related to over discharge and undercharging.  A hydrometer like this:
can be used to determine actual state of charge of a flooded battery like the Walmart RV/ marine flooded lead acid battery.  

A volt meter monitored during the day won't be useful if the original poster is at work and not present to verify absorption voltage and charge current decreasing as the battery gets full.

A sealed battery state of charge checking device is more expensive.  Can someone recommend a device that is easy to install?
You cannot establish security on borrowed money
8 of Ten Cannots, Rev. William John Henry Boetcker, 1916.
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The following 2 users say Thank You to Trebor English for this post:
ArmorAbby (01-28-2018), highdesertranger (01-02-2018)
Which may just open up a very involved discussion about SoC monitors. I think the useful ones are too expensive for the OP context, and really needs baselines established with a healthy bank.

Balmar SmartGauge is most accurate and user-friendly.

For AH-counting, Victron BMV-70X series.

Getting the batts separately and fully charged on mains power is required before any SoH testing.

Just looking at specific gravity or voltage will require resting at least 24 hrs for accuracy, unless they show immediately they won't hold a charge.

Putting a .05C load on each separately and timing the drop to 10.5V compared to 20 hours is more accurate than any machine.

And when they prove to be in need of replacement, even if OP is unable to treat the new ones much better, true deep cycling units will stand up to that abuse better, they will last for longer and if the Deka/Duracell, will not cost more per AH than the falsely labelled ones.
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I was able to pop in this afternoon, it got up to 13.6.. or 13.9.. I dont remember, I didnt allow it go further cause my phone was dying and I had to plug it in... After a few minutes, dropped all the way back down to 12.0... I truned it off, let it climb back up, climbed quickly, then stopped climbing at 12.7..... Ive also sorta let it go so I can see numbers... My inverter doesnt sound the alarm until the voltage hits 10.~ and the charge controller goes red when its 11~ .. Yes, I let it get that low to see when the warnings go off... at any rate, I will be buying two new batteries, and get rid of these, but not until the weather lets up... and I want to add two more panels while Im at it as well.... 400watts of panels.. 200ah of batteries...

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Started fulltiming 01/17 -  '98 Chevy Express 1500 Gladiator 
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The following 1 user says Thank You to ArmorAbby for this post:
rvpopeye (01-01-2018)
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There are amp counting meters in the few hundred dollar range. They need care during set up but work well enough. When checking the voltage across the terminals. Don't worry about all the voltage readings while you are using the system. The voltage before you start charging and the voltage before you start using are the important ones. The voltage during charge is fine to determine the panels are working. The best voltage measurement is after the battery has sat with no load or charge for a day or, at least, for many hours. During our record weather, you should try to plug in to charge your bank every few days. From here I can not see if your battery is junk metal. But if you are considering new batteries, both should be the same type, age, and manufacturer. I don't trust the ones sold in Walmart except for the warranty honored every 5 miles. It is worth exchanging your walmart battery. The ones sold at Sam's Club or Batteries Plus Bulbs with the Duracell label are made by East Penn, Deka. They are not available at Walmart. Two marine type batteries may not be enough to use any electrical device except small fans and direct charge electronics as phones and tablets. Good luck with your stove, the fuel is less expensive at Asian markets.
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ArmorAbby (01-03-2018)
Thanks, Loving the stove. Made chicken and rice night before last. Didnt cook last night cause my chicken froze while sitting in the van so just said eff it... ate out... I got a hotel for tonight and tomorrow until this snowstorm is done. Then we should have better temps from Sunday on.

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Started fulltiming 01/17 -  '98 Chevy Express 1500 Gladiator 
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Yes. Hunker down Wednesday night through Thursday Nor'easter.
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