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I'm a noob building this simple setup for the purpose of powering a 12 V fridge in my truck. This build will replace a Jackery system. I have two questions: 1) What do I need to add to the build to be able to charge this battery from the 12 V (10 A) outlet in my truck? It seems like a 12 V...

An owner of the fridge posted on Amazon that the idle draw is 0.13 A; startup is 11 A for first 5 minutes; running current is 4.77A. So with that Renogy DC-DC charger, rather than setting it up as intended with alternator -> DC-DC charger -> battery -> fridge, I could instead do 12 V (10 A)...

No worries! Thanks for the help. I'm basically trying to emulate the Jackery 500 solar generator, which can be charged via solar, AC, or 12 V cigarette plug (video link). DIY cigarette plug charging is more confusing than I anticipated.

Can anyone help? I'm stuck on a pretty simple question... I'm basically trying to emulate the Jackery 500 solar generator, which can be charged via solar, AC, or 12 V cigarette plug (video link). Is a DC-DC charger needed to charge a 12 V AGM battery via a 12 V (10 A) cigarette plug, or is there...

I'm expecting a DIY approach to be cheaper. For $325, I can build a 100 Ah AGM vs. $500 for the Jackery 24 Ah lithium-ion. If I can solve this cigarette plug charging problem, the DIY build will do everything I need with higher battery capacity and a lower price.

I'm following this build (https://www.mobile-solarpower.com/minimalist-on-a-budget.html), and I think I just realized something... This build includes solar charging and AC charging. Could I just connect an inverter to my truck's cigarette plug and then use the AC charging?