arlo pro 3 - battery drain on one camera

[TrevorBorinett]

Hi my three camera have been working fine until a month ago when one battery went flat, so i charged it and still went flat.  so i bought a new battery thinking this was the problem, still went flat, so changed the battery to another camera and it works fine.  so i bought a new solar panel thinking the panel was not charging, still it went flat.  can you please advise what is the next checking point to see what is going on.  the cameras are approx three years old.

[jguerdat]

Swap cameras around to see if the camera or location causing this.