Here’s a little trick I wanted to share with you all:
Everyone knows the zinc-air battery discharges quickly once untaped, right? Some of you may have tried using tape but it’s rather inconvenient and doesn’t work right 2nd time.
Blu-tack, however is perfect for the job. It can be used over and over and you probably have unlimited supply in the office supply cabinet. Since it’s sticky and gooey it makes a nice airtight seal when you poke the battery on it, flat end first.
I just carry a bit in my hearing aid case and poke the batteries into there when not in use. I’m not using my hearing aid much these days on my day job so the hearing aids are used only lightly. This way I see a huge difference in how long the batteries hang on. YMMV.