2004 Toyota Land Cruiser — second battery versus portable power station

I parked the 2004 Toyota Land Cruiser and wrote down what I already tested so I'm not repeating myself. Wrote this up on my lunch break.

I'd keep this practical. Verify the cheap/easy branch on the 2004 Toyota Land Cruiser before a big repair or a big spend. That's where I'd start. Verbal 'we'll take care of it' is not a plan. Doing the boring step first on purpose.

Write down what you already tried. A second data point from another 2004 Toyota Land Cruiser owner helps more than a generic diagnosis. I'd do that before spending real money. I'd want a dollar figure or a measured spec, not 'should be fine.' Not trying to scare you — just skip the expensive first guess. This is the version I'd tell a friend.