M7350 Shutting down unexpectedly
I have set up the 4G modem in a remote location (one hour drive) to provide a gateway for data from the temperature, humidity, pressure, water level sensors.
Data is sent every 6 hours, in the idle period no data is accessoed over the internet. The charger is plugged in at all times, 1A capacity charger. The charger and the M7350 are isolated and temperature is monitored, ranging from 10-30. After a few hours the router just shut itself down. When I make a visit I see that the battery is not empty and a simple press on the switch is enough to get it started. I have not enabled power saving, as 220V is available. The OrangePi computer is working without isolation and is always up, even when the router is down, no power glitches (uptime in the 30+ days range). Is there any reason for the router to just shut itself down ?
Regards,
Ole
PS: it brand new, ordered in early Dec. 2019, and without access I have no way of reading out the hardware and firmware.