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2019 Ram 2500 — second battery versus portable power station — anyone dealt with this recently?

TireBuilder162Community StarterAug 24, 20262019 Ram 2500 CumminsNationwide
I want reliable fridge/lights/device power for weekend trips without making the vehicle electrical system unnecessarily complicated. When does a hardwired dual-battery setup beat a portable power station? Mileage is about 112,000.
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11 replies

NewCarCollector228Community StarterCommunity StarterAug 24, 2026permalink
Write down what you already tried. A second data point from another 2019 Ram 2500 owner helps more than a generic diagnosis. Then you'll know the next fork. Just my two cents from doing this recently. This is the version I'd tell a friend.
CityFan766Community StarterCommunity StarterAug 24, 2026permalink
Write down what you already tried. A second data point from another 2019 Ram 2500 owner helps more than a generic diagnosis. Then you'll know the next fork. Learned this the expensive way on a previous car. If this is nothing, great. I want that in data.
TireBuilder162Community StarterCommunity StarterAug 24, 2026permalink
I parked the 2019 Ram 2500 and wrote down what I already tested so I'm not repeating myself. I'm keeping receipts and dates in one folder.
CityFan766Community StarterCommunity StarterAug 24, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2019 Ram 2500, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. Had a similar mess a couple years ago and that's what finally sorted it. If the story changes I'll post the new data.
V8ScoutCommunity StarterCommunity StarterAug 25, 2026permalink
Owner notes beat generic advice here. On the 2019 Ram 2500 in Nationwide, I'd fix the thing you'll notice every day before chasing spec-sheet extras. I'd do that before spending real money. On “second battery versus portable power station —,” that was the fork that mattered for me. Write the result down so the next test isn't a repeat of the last one. Wrote this up on my lunch break.
TireBuilder162Community StarterCommunity StarterAug 25, 2026permalink
Useful. I'll report back after I verify that on my 2019 Ram 2500. Doing the boring step first on purpose.
PistonCollector78Community StarterCommunity StarterAug 26, 2026permalink
Asking because it changes the advice: If it still isn't clear on the 2019 Ram 2500, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. Happy to compare notes if your setup is different. I'm in no rush to be a hero on it.
CityFan766Community StarterCommunity StarterAug 25, 2026permalink
Write down what you already tried. A second data point from another 2019 Ram 2500 owner helps more than a generic diagnosis. I'd do that before spending real money. Learned this the expensive way on a previous car. Might be overthinking it, but I'd rather overthink than overspend.
BrakeCollector333Community StarterCommunity StarterAug 25, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2019 Ram 2500, a specialist hour can be cheaper than another round of parts. That's where I'd start. Happy to compare notes if your setup is different. I'm keeping receipts and dates in one folder.
PistonCollector78Community StarterCommunity StarterAug 25, 2026permalink
Owner notes beat generic advice here. On the 2019 Ram 2500 in Nationwide, I'd fix the thing you'll notice every day before chasing spec-sheet extras. That's where I'd start. On “second battery versus portable power station —,” that was the fork that mattered for me. This is from a 2019 Ram 2500 in Nationwide. Post the numbers (or the code) and people can get more specific. That's my plan before I call anyone.
CityFan766Community StarterCommunity StarterAug 26, 2026permalink
I'd push back a little: Verify the cheap/easy branch on the 2019 Ram 2500 before a big repair or a big spend. Then you'll know the next fork. Had a similar mess a couple years ago and that's what finally sorted it. I'll update if anything new shows up.
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