Nighthawk M1 monitoring Blink camera

I just purchased a Netgear Nighthawk M1 mobile router with ATT service. I plan on using the router on my motor home for entertainment etc.. but I will be depending on it to monitor my dog when we are away from the rig, with a wireless Blink camera and a WiFi thermostat. Does anyone have any experience with the Nighthawk using it this way? I plan on removing the nighthawk’s battery and use a UPS (battery backup/surge protector). I was going to use the Nighthawks Internal battery with a WiFi enabled surge protector outlet to cycle on periodically to charge the Nighthawk’s battery, but I’ve been reading that it’s battery over heats and shuts down the router sometimes, so I think I’m better of removing its internal battery and use the UPS.

Any advice?