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Old 10-09-2018, 07:10 AM   #1
JDT
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Batteries

I have 2 6 volt Interstate batteries that came with the Winslow. I know they run the 12 volt stuff in the coach but they also run our Samsung fridge thru a 1000 watt pure sine wave inverter. We have an automatic transfer switch which changes from shore to inverter and vice versa. The batteries are finishing their 7th season. When we left in early September there were no signs of any problems. We sat in the same spot for over 4 weeks and when I unplugged the shore power the monitor on the inverter showed 11.4 volts. On shore power it showed 13.6. At our first stop the batteries were at 12.4 volts and I had no more issues the rest of the way home.

This tells me the converter and the charging line from the truck are working fine and the batteries are beginning to show their age, right? I'm thinking I will just get a couple of conventional golf cart batteries from Costco or Sam's but I know there are other options, for more money, of course. Any suggestions?
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Old 10-09-2018, 07:24 AM   #2
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Short answer - I'm with you on the Costco or Sams batts for the money. You can go to Trojon and get a more physically heavier duty construction batt but I think you'll be fine with the Costco for what you use the batts for in a rig.
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Old 10-09-2018, 06:32 PM   #3
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I agree that your batteries are aged/worn out. Seven years is good on a set of batteries.

I suspect that the GC batteries from SAMS/Costco are made by Deka, a good maker. Deka also makes the GC batteries for Batteries Plus. I've bought these for three RVs and have been very happy with them. Not saying anything bad about buying from SAMS/Costco just another option for your information.
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Old 10-09-2018, 06:48 PM   #4
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Our local Costco no longer sells Kirkland (house) brand batteries. All of their batteries are now Interstate. Just a FYI.
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Old 10-09-2018, 06:49 PM   #5
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I think I jinked myself 'cause my bride got up early to go to a 7 AM doctor's appt she's had for 5 weeks. The batt in our 4 year old car was stone cold dead. I had to run to WM to get a fresh one. Still had to cancel her appt. Damn! Life is so interesting with stuff like this, how could anyone get bored?.....it's ALWAYS something. Or as Vaughn Peterson used to say...Oh Lord, what's next? I'm 'bout due for a flat tire or blowout. Now back to the subject!!!!
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Old 10-09-2018, 07:01 PM   #6
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Sorry, Tom. I mention batteries and look what happens. I won't even ask about tires. If Costco sells Interstates now, and I will look next time I'm there, that will probably be my choice.
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Old 10-09-2018, 07:31 PM   #7
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Yeah, I have no problems with Interstate batts.
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Old 10-09-2018, 09:20 PM   #8
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Quote:
Originally Posted by UFO Pilot View Post
Our local Costco no longer sells Kirkland (house) brand batteries. All of their batteries are now Interstate. Just a FYI.
Interstate made the batteries for Costco before so they are basically just the same batteries with a different label.
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Old 10-10-2018, 07:18 AM   #9
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I have four 6V golf cart batteries that I bought 4+ years ago at Sam's. No problems or complaints. We too have residential fridge running off inverter when we're off shore power.
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Old 10-11-2018, 04:48 AM   #10
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If all cables and grounds are tight I would think batts could be load checked at any parts store for the real story.
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