V quick battery drain on stick up Camera

HiOur stick up cam (bought Feb 21) started draining it’s battery very quickly, full charge to 10% in just over 2 weeks.Thought it was the battery so bought a new one. Fully charged it and it also needs charging again after 2 weeks.This is one of 2 cameras we have, both have exactly the same settings, there are no excess triggers and both have very strong Wi-Fi signals.We get 4+ months normally, the other camera still does.Next step is to recharge both camera batteries and swap them round just on the off chance this is the second dodgy battery. If that doesn’t make any difference, does anyone have any suggestions?Thanks