These GP Batteries size 312 hearing aid batteries are designed to operate perfectly in a range of different branded hearing aids. They boast 0% mercury and no added lead.
GP Batteries use the industry-standard colour code which can usually be found on battery tabs and packaging. These particular cells are size 312 so they use the colour Brown.
These size 312 cells can also be known as ZA312, PR41, AC312 or DA312 batteries.