I have 3 of the Soujamao el cheapo's. they work sort of ' meh'. their distance is short and their reset is a longer period than other units I use (Aerotec/Smartthings etc).
My battery showed 200 for a while - I did the config/refresh, and waited about 2 hrs - it cleared up.
Try the old trick :
Change driver to 'Device' - then configure, then button mash remove all blah blah. then set driver back to Generic Zigbee Motion Sensor (No Temp). Be sure to select that no temp - I think the first time it hooked it got the temp attribute driver and I had to switch it over.
Also, a smart dev is working on Tuya devices - keep your eye open for that as this is a Tuya based unit.