A:Answer Sorry, but it depends. The heavier the use, the more often it must be charged.
Example. I have an Arlo P2 on my garage and it catches any movement in my front yard and driveway. There is a lot of activity coming and going, so I have to charge mine about once a month for busy times.
Same camera in the back yard, I charge every 4-5 months.
Arlo Pro lasts much longer than Pro2, but resolution is less.