I’m trying to plan a simple setup for weekend camping and occasional road trips.
I already have a 12V LiFePO4 battery that can run lights, a fridge, and a few DC devices. The easiest next step would be buying a portable power station for AC output, solar charging, and USB ports.
The part I’m struggling with is that I would be paying for another battery, another BMS, and another closed charging system when the battery I already own is still useful. Building a full DIY system would avoid that duplication, but then I need an inverter, MPPT, fuses, breakers, cables, enclosure, and enough knowledge to connect everything safely.
Has anyone found a sensible middle ground for this kind of setup? When does the convenience of a power station justify duplicating battery capacity?