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Old 01-29-2012, 08:19 AM   #29
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As a check of charge condition, I took the solar collector off line and put a charger on the system. My 6 gc batteries, the smart charger gave up and flashed a red light after about five minutes of trying. Did a hydrometer check of each cell and found in the center battery one dead cell. took it out of circuit and the battery charger was happy, yesterday I pulled the bad one and one of the good ones to balance the load. Can't complain as when I looked at the date of manufacture it is Jan00. One thing I found over the years has been that they use a lot of distilled water, top them up when you get them and check at least every 6 months.
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Old 12-01-2015, 09:45 PM   #30
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What are dimensions of Costco 6v cart batteries?
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Old 12-01-2015, 11:38 PM   #31
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Still satisfaid with those battery??
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Old 12-02-2015, 01:36 AM   #32
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GC2 dimensions
length is 10 1/4" x width 7 1/8" x height 10 7/8";
weight is 60+ lbs each
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Old 12-02-2015, 01:41 AM   #33
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Yeah, tell me about the weight. My battery box is big enough but it was a flat out struggle to get those beasts off the truck and onto the box. You need a good sturdy battery strap or a strapping big helper to get them in place. That said, my AMSolar system keeps them nicely charged while I keep the lousy AS issue battery boiler off them.


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Old 12-02-2015, 07:54 AM   #34
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GC2 dimensions
length is 10 1/4" x width 7 1/8" x height 10 7/8";
weight is 60+ lbs each
Thanks! Trying to find the right battery box
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Old 12-02-2015, 10:19 AM   #35
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Ours came from Sutton RV in Oregon.


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Old 10-13-2017, 09:50 PM   #36
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I got my small RV in 2012, used, bad batteries, so I changed to GC2s from Costco and added a Xantrex Link Lite to be sure not to over discharge them. I was very happy with them, but a couple of years later I found they were not able to run the furnace all night like they did when I first set them up. I had tried to keep them charged by always plugging in when I returned home, not always successful. I didn't know a great way to tell if they were bad or just used, so I gave up and got a new set and was back to happy.

To be sure I didn't have to replace the batteries again I purchased a solar system that keeps the batteries topped up and equalized every month. No worries about forgetting to plug in. Unfortunately I parked the RV at my cabin for the winter last year and between the snow and the pines the solar failed me and let the batteries die.

I noticed this last trip that the battery will no longer run the refrigerator anymore. The battery voltage drops too fast. Perhaps it's time for another set as it's almost 3 years. Perhaps I should get some sort of low voltage cutoff for those times when the solar isn't keeping up with the parasitic loads. Don't like killing my batteries with bad care.

What has others experiences been with the Costco batteries? Should I be getting 7 years or is that just what you get when you pay half what a Trojan cost?

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Old 10-18-2017, 07:16 AM   #37
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I would think if you are not able to check the batteries at least weekly or so and not living in somewhere like AZ with no snow or tall trees to block the solar you might want to unplug the batteries durning non usage.

Letting any battery run down completely especially a deep cycle battery is its death abet a slow one. 3 yrs on a set of good batteries is not the norm. Some folks get 6 to 8 yrs of usage on well cared for batteries.

instead of running the furnace, a power hog, consider a heater like the thermal wave or the heat buddy type device that uses no power. better option for battery life over all.


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Originally Posted by israndy View Post
I got my small RV in 2012, used, bad batteries, so I changed to GC2s from Costco and added a Xantrex Link Lite to be sure not to over discharge them. I was very happy with them, but a couple of years later I found they were not able to run the furnace all night like they did when I first set them up. I had tried to keep them charged by always plugging in when I returned home, not always successful. I didn't know a great way to tell if they were bad or just used, so I gave up and got a new set and was back to happy.

To be sure I didn't have to replace the batteries again I purchased a solar system that keeps the batteries topped up and equalized every month. No worries about forgetting to plug in. Unfortunately I parked the RV at my cabin for the winter last year and between the snow and the pines the solar failed me and let the batteries die.

I noticed this last trip that the battery will no longer run the refrigerator anymore. The battery voltage drops too fast. Perhaps it's time for another set as it's almost 3 years. Perhaps I should get some sort of low voltage cutoff for those times when the solar isn't keeping up with the parasitic loads. Don't like killing my batteries with bad care.

What has others experiences been with the Costco batteries? Should I be getting 7 years or is that just what you get when you pay half what a Trojan cost?

-Randy
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