Battery Cam Pro keeps turning off

Hi, my battery cam pro is connected to wall power 24/7 with the battery inside the unit. Now, when battery reaches 100% it will just start running off the battery til it gets back to 0% then simply turns off. Then turning it back on means getting up to the ceiling taking battery out and reinserting it, as simply plugging/unplugging the charger will not turn it back on. Is there a fix for this?
It should simply remain at 100% running off the outlet til there’s power loss at which point should turn to battery, this is why I purchased it thinking this.