I purchased one of these MiFi devices for my motorhome to use in conjunction with my Blink security system (https://blinkforhome.com/
) when parked at the storage facility. After just a couple of days in operation the unit would keep turning off on its own even though it was plugged in to a USB charger full time (HOMREE DC-DC Converter Step Down Module 12V to 5V Micro USB Output Buck Power Adapter - https://www.amazon.com/gp/product/B01ME ... UTF8&psc=1
). Appears the unit is trying to prevent the device from over charging and causing battery damage, kills the USB power, then drains the battery until it is dead, which then turns off the unit. Made running 24/7 impossible. Makes for a very unreliable security system.
I found this video on YouTube (https://youtu.be/zq5T0EbJb9c
) and removed the battery as described in his video. I also changed the settings to flag that the USB port was for changing only vs. charging + tethering (found that on a user forum in Australia of all places--thanks Internet!). Problem solved! Unit no longer overheats and stays up and running 24/7. Given I have solar constantly topping off my RV batteries, I shouldn't lose power and can skip the device's internal battery. Appreciate the tip in his video and the online forum in Australia for solving my problem.