We can't stress this enough - let your batteries breathe!
Posted 01, October 2020
We can’t stress this enough – let your batteries breathe!
Hearing aid batteries are air-activated, so they need to be left for at least one minute after you take the tab off, before inserting into the module.
The tab is covering tiny air holes. If the battery doesn’t get chance to suck in air, it won’t be fully charged and you’ll be replacing a dead battery with a dead battery.