ReoLink Argus PT Battery Indicator constantly changing between two values

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I have my Argus PT WiFi connected to a Spypoint SPLB-22 solar panel. This is a larger capacity solar panel with it's own built in battery. usb-c to usb-c My experience with my other 4g reolink was that the reolink panels could not provide enough power to keep the camera charged and utilize all the features so I had to constantly monitor the 4g camera and turn things on/off as needed to prevent it from dying.

Now with my new Argus PT Wifi, I'm noticing the battery indicator changes constantly between two %s, like 95 and 100 or right now 81 and 95. In my phone app, I can touch the battery row and go back and forth and it's constantly changing between those two values.

My expectation was that the Spypoint panel would keep the ReoLink at 100% until somehow the spypoint panel's battery was dead and there was no sun.