Pro cam2 poor battery health

I have two Pro 2 cameras, one is at the front of the house and is activated constantly with no issues and the battery holds charge well over 4/6 months. The other camera is at the rear of the property and is rarely activated, this battery only holds power for around 4 weeks. It is obviously defective, is this under warranty?

I reckon it is either defective or is picking up a lot of false detections.

Swap them. See if it continues