I'm no electronics expert, but I think the Houston heat could be a problem. I googled the Jackery and got the following: "Jackery power stations have an operating temperature of 14–104°F and a recharging temperature of 32–104°F".
I assume the solution to the Houston heat and a Jackery/EcoFlow would be to keep Cabin Overheat Protection on to be safe. That's what I will do in summer heat.
I'm not using a Jackery but decided on an EcoFlow River 2 portable power station. The price and power is about the same, but the EcoFlow has two big advantages over the Jackery for me.
- EcoFlow uses the newer Lifepo4 Battery.
- EcoFlow has a fantastic iPhone app that allow me to monitor and change settings via Bluetooth or WiFi.
I can monitor activity without having to open the trunk to see what's going on with EcoFlow and BougeRV 12 Volt Refrigerator. I can tell if/when it's charging and being charged, battery % and time left, output voltage, etc.. It even has some 'automation' features that allow me to not charge the refrig at certain times if I want. In my case, I've decided to turn off charging the refrig between 11PM and 5AM daily.
The EcoFlow stays plugged into the Tesla trunk 12V 24/7 and the refrig stays plugged into the EcoFlow 12V output 24/7. When I'm in the car I can monitor activity via the app, and see that the EcoFlow is being charged and/or charging the refrig. When not in car, I can see that that the EcoFlow is not being charged, etc.
So, far so good for the few days I've had it. The EcoFlow battery gets down to around 50% by morning. But, normal daily driving charges it back up to the 90% and above. I charge my 2024 MYLR to 80% daily overnight, and it's still at 80% in the morning with EcoFlow plugged in 24/7.