I have owned AirPods, AirPods 2 and recently AirPods Pro 2. The battery life on the cases on the original AirPods and AirPods 2 usually lasts far longer than a week, in fact I haven't used my AirPods 2 much since I bought the Pro 2's and they have been sitting on my desk for weeks. I just checked the case battery level and it's about 28%.
The Pro 2's however seems to be a different situation altogether. I find that I have to constantly charge the case.
So, I measured the drain and (by chance) I didn't use the AirPods during the duration of the test (except for 15 mins once.)
The case went from 100% to 0% in four days.
Is this normal? Am I just spoiled by the insane battery life of the older models' cases?