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Battery replacement?

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gpokluda View Drop Down
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Post Options Post Options   Quote gpokluda Quote  Post ReplyReply Direct Link To This Post Topic: Battery replacement?
    Posted: 01 Sep 2025 at 8:18am
Sometimes the best solution is the simplest solution. Glad you got it figured out. Now, on to the next adventure.
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Post Options Post Options   Quote Jeff_NH Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2025 at 8:11am
Thanks all for the info.

I considered Lithium but decided to go with 2 GC batteries due to the cost and the 2 required side projects.  Wish I could say I was going to test them this week, but alas we have a plug in site so I may have to wait a bit to experience the joy of 255 AH of battery.
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Post Options Post Options   Quote gpokluda Quote  Post ReplyReply Direct Link To This Post Posted: 29 Aug 2025 at 7:40am
Originally posted by jato

Yes, I grit my teeth when lifting yet it is lighter than the 50 kilo bags of concrete I have toted around in Guyana and Nicaragua.  BTW 50 kilos = 110 lbs.  I wonder if that is why the men in Guyana and Nicaragua are so short!

Impressive! Not sure I could do that at my age and I consider myself to be in pretty could shape.  

Back to the battery topic, the OP needs to consider their plans for their Rpod. I went through the same decision process with our 179 and eventually decided that the juice wasn't worth the squeeze to convert ti lithium batteries, and FLA and AGM batteries didn't fit our travel style. So we ended up with a different camper with a full solar-lithium-inverter setup.
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Post Options Post Options   Quote jato Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 2025 at 9:39pm
Fortunately I only have to move it 2x/year.  In spring when installing and in fall when I place it directly on a concrete floor in an unheated garage in northern Michigan.  Yes, I grit my teeth when lifting yet it is lighter than the 50 kilo bags of concrete I have toted around in Guyana and Nicaragua.  BTW 50 kilos = 110 lbs.  I wonder if that is why the men in Guyana and Nicaragua are so short!
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Post Options Post Options   Quote gpokluda Quote  Post ReplyReply Direct Link To This Post Posted: 28 Aug 2025 at 7:21am
Originally posted by poohbill

How the heck do you tote an 85lber?

Exactly. Premium golf cart batteries should come with a gym membership. 
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Post Options Post Options   Quote poohbill Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2025 at 8:30pm
How the heck do you tote an 85lber?
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Post Options Post Options   Quote jato Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2025 at 7:46pm
Another Trojan battery fan here, and yes we boondock a lot and do not utilize solar or generator.  We carry two 12v batteries: 14 yr. old Interstate deep cycle and a 5 yr. old Trojan T-1275 (160 aH).  They are good for 6 boondocking days when night temps are in the 40's, it is the furnace that eats up aH, if we are camping in warmer climates, we can go much longer.  The T-1275 is a heavyweight at 85 lbs, but is very useful to me as we always carry a full FW tank of water, which is located behind the axle.  Our tongue weight with a fully loaded 177 (weighs in at 2940 lbs) is 340#, which is more than the 11% needed to reduce/eliminate trailer sway.  
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Post Options Post Options   Quote gpokluda Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2025 at 7:35am
To monitor batteries effectively, there is nothing better than a shunt coupled to a battery monitor. I have a Victron BMV-712 SMART on my current rig and used the Renogy 500A on my previous Rpod. The Victron is is more expensive than the Renogy but a hundred times better.

I've been using LiFEPO4 batteries for 3 years now. I would never go back to AGM or FLA batteries. Do your research and you will find you can get one in just about any size that meets your needs. You will also have to check your power converter/charger to see if has a Lithium setting. 
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Post Options Post Options   Quote Pod People Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2025 at 11:12am
We have used several different battery makes,sizes  and configurations since our first R Pod in 2011.
Without question, the best solution for us has been 2 6v Trojan batteries. They are costly, but last long enough to make them well worth the extra cost. The extra amp hours(ah) are perfect for boondocking.

We did have to buy a new battery box as they are slightly taller than the regular 12v batteries that usually come installed.

 I just looked at the Trojan website-they currently list a T-125 6v lead acid battery at 240ah. This is the highest rated ah battery available in flooded lead acid batteries. 

Using 2 6v batteries in series will give you more ah capacity that any 12v single battery.
If you truly want to have power while boondocking, these are the batteries to use.

We use them in conjunction with a 100watt solar suitcase and a Honda 2200 generator and have been on the road for as long as 3 months with no hookups.

I am not associated wiith Trojan other than a very satisfied user for over 6 years.

Travel often and safe 
Vann

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Post Options Post Options   Quote poohbill Quote  Post ReplyReply Direct Link To This Post Posted: 25 Aug 2025 at 8:16pm
Your description gives me the impression designing a new battery system would be a pleasurable exercise. If so, you will only waste time on the current cell - buy new flooded lead-acid in the spring and sally forth. Before considering 6V cells, check whether their additional height fits - they didn’t on my 179. I haven’t read anything attractive in Lithium up in our cold climate.
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