I have an solution heat shrink.

I did put heat shrink over all holders just to make sure not to have this problem anymore. I have 2 mooshimeters which have both the same problem and drained the battery even in hibernation empty one in 3 weeks the other one in hibernation in 6 month.

They both arrived with 50% charge in the battery and I first blamed DURACELL.

Sincerely

Sven Heine