I’ve been tracking the average life of a couple of different battery brands, for my hearing aids, and thought I’d share the results. I’ve tried three different brands so far: Rayovac (free pack of batteries from my Audi), Sonus (free pack of batteries from HearPO), iCellTech (purchased via the internet). Obviously this doesn’t include anywhere near all the different battery brands available, just a couple that I’ve personally used.
I wear a pair of Phonak microEleva open fit BTE aids that use a size 312 battery. I wear them, on average, about 16 hours a day. They go in when I get up, and come out when I go to bed (or take a shower ). When I get a low battery tone from either hearing aid, I replace both batteries. Interestingly, the right aid is always the one that goes down first. I haven’t tried changing just one battery to see how much longer the left side would go. I’d rather just change both at the same time.
The results (drum roll please!):
Rayovac - I get about 8.5 days use.
Sonus - Same, about 8.5 days.
iCellTech - I get about 9.5 days from these.
So the iCellTech batteries give me about 11% more life than the other two. Not a huge amount, but still interesting. Please keep in mind that this is a very small sample (basically 1 or 2 packs of each brand), and the results could have been different if I’d included say 25 packs from each manufacturer (which I’m not really interested in doing). Totally non-scientific. Enjoy.