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Old 06-20-2022, 11:22 AM   #1
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2018 Winnebago Era A house batteries

Iím going to replace the two house batteries on my 2018 Era. I can see they are NAPA Commercial AGM but canít see a size. Iíd like to have my mechanic order them without a trip to remove one first as he doesnít have room to keep my van.
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Old 06-20-2022, 04:18 PM   #2
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Why not replace them with a similar footprint lithium pair? You'll be glad you did.
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Old 06-21-2022, 03:55 AM   #3
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Why not replace them with a similar footprint lithium pair? You'll be glad you did.
A good thought but Iím concerned about then needing to upgrade my solar controller and maybe my charger, plus the batteries hang undid the chassis so I imagine I would have an issue charging in cold temps.
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Old 06-21-2022, 09:19 AM   #4
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A good thought but I’m concerned about then needing to upgrade my solar controller and maybe my charger, plus the batteries hang undid the chassis so I imagine I would have an issue charging in cold temps.
Does your solar controller have a lithium setting? My ZS-30A does, and it provides the added ooompf to bring them closer to fully charged when the sun shines on my 3 100W Zamp panels. I also added a Charge Wizard Pendant to my PD9245 converter/charger (doesn't have a lithium setting) to allow me to manually boost the charge current above 14V when plugged in to shore power, if I think it's needed.
Search on low temperature charging capable lithium batteries. Relion makes them (I have 2 100Ah RB100-LT myself) and I recently saw another major player, maybe Renogy(?) that also makes some that charge down to -20C/4F. They just use some of the charging current to self-heat. (I live in Canada, eh)
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Old 06-27-2022, 05:22 AM   #5
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Call BattleBorne - (855) 292-2831. One stop shopping. They'll answer all your questions. Heated batteries are standard lithium kit now.
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Old 06-27-2022, 06:41 AM   #6
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Make sure you verify how far below 32F your batteries can accept a normal rate of charge by looking at the individual manufacturer's specs, if you need them to charge in very cold temps. Battle Born's BB10012 100Ah legacy model can only accept nominal charge down to 25F, where others like the Relions and Renogy batteries are good to charge down to -4F/-20C. Do your homework. Another point to be aware of is can they provide enough momentary cranking amperage to start a generator or other high draw appliances, before the BMS kicks in and stops the rapid discharge.
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Old 07-03-2022, 04:15 AM   #7
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Thanks for all the input. Back in the days of my DP, where I did a lot of projects to make it comfortable for multi-month trips, I would have definitely converted the batteries. I just havenít the need (or energy) to research and convert my Class B as the AGM batteries have enough capacity for my current needs.
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