B900 Batteries

B900 batteries (equivalent size 675) are zinc-air batteries (yellow labeling) commonly used in hearing aids. Batteries are sold in 4-cell packs. Orders of 40 batteries will come in 10 4-cell packs.

Hearing aid batteries are activated by oxygen and must be discarded after use (5-7 days). They are not rechargeable. In order to activate the batteries, remove the sticker, pause so the oxygen activates the battery, and then place the battery in your hearing aid. Do not store your batteries in the refrigerator or in cold or humid areas. Hearing aid batteries should be stored in dry environments at room temperature.

Collect 10 battery pack coupons from the packaging and get one 4-cell hearing aid battery pack free!