Definitely a valid concern! The BLUETTI Elite 300 uses lithium iron phosphate (LiFePO₄) batteries, which are much less susceptible to thermal runaway. It also has a built-in Battery Management System (BMS) with protections against overheating, overcharging, and electrical faults.

BLUETTI makes quality equipment. You can even use the Elite 300 as a UPS.

The operating temperature tops out at 104°F, so that's something to be mindful of. Plenty of van dwellers use these systems in places like Arizona, but managing the interior temperature is important.

I'm also looking into a portable air conditioner/heater for climate control, especially when I need to shower or run errands and Moxie can't come with me.

Just need to sort out the space and figure out where to run the ventilation hoses.

Keeping her safe and comfortable is a top priority. I want to be able to monitor the temperature remotely and have live video of her and the car from my phone at all times.

Nothing is completely risk-free, of course, but these systems are designed for portable, off-grid living. :)