Which battery do I need?
Hearing aid batteries and Cochlear Implant Batteries have been standardized across the board now, and as such are fairly easy to identify. There are four sizes available, size 10, size 312, size 13 and size 675.
They are color coded for ease of recognition. Size 10 batteries are coded with yello
w labels and packaging, size 312 are coded brown, size 13 are orange and size 675 are blue.
Hearing aid batteries and Cochlear Implant Batteries have been standardized across the board now, and as such are fairly easy to identify. There are four sizes available, size 10, size 312, size 13 and size 675.
They are color coded for ease of recognition. Size 10 batteries are coded with yello
w labels and packaging, size 312 are coded brown, size 13 are orange and size 675 are blue.
Most of the smaller hearing devices from Phonak, Resound or Oticon will use a size 312 (brown) or a size 10 (yellow) battery. Some of the larger digital hearing instruments will use the size 13, and a few power aids such as the Oticon Sumo or the Phonak Naida will use the size 675.As a rule, the 
larger the batteries, the more life you will get from it and the longer you will be able to listen to your hearing instruments without needing to change the battery. Newer hearing devices, do generally tend to be smaller which is clearly desirable from a cosmetics perspective. These smaller hearing instruments tend to use 10 or 312 batteries. Try to find a quality battery brand such as Rayon, which are specifically designed and manufactured for hearing aid wearers. These will most likely provide better performance with your hearing devices than other brands. You may find that some brands of hearing aid batteries will provide a recycling facility where you can send them back and these can be reused.
larger the batteries, the more life you will get from it and the longer you will be able to listen to your hearing instruments without needing to change the battery. Newer hearing devices, do generally tend to be smaller which is clearly desirable from a cosmetics perspective. These smaller hearing instruments tend to use 10 or 312 batteries. Try to find a quality battery brand such as Rayon, which are specifically designed and manufactured for hearing aid wearers. These will most likely provide better performance with your hearing devices than other brands. You may find that some brands of hearing aid batteries will provide a recycling facility where you can send them back and these can be reused.
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