Hearing Aid Batteries
Zinc-air hearing aid battery product packaging uses a standardized system of tabs which are color coded. Regardless of who the manufacturer is, all batteries of a specific Size (10, 13, 312, 675) will always have the identical color code on their packaging and tabs. Zinc-Air batteries are a type of button cell that use oxygen in the air as a reactant. They have a very high capacity compared to their size. Each cell uses about a cubic centimeter of air per 10Ah discharge rate. While the sealing tab is on the battery, it keeps air out of the battery and gives the battery a 2-4 year shelf life. Once the tab is removed the electrolyte will dry out regardless of use and the battery will stop working within a week or two regardless of use. Fast Free Shipping* | Batteries.com
The top four sizes and types of hearing aid batteries are:
Size 10 / Yellow Tab – A Yellow Tab always means Size 10 hearing aid batteries. They are typically used in Completely-In-Canal (CIC) and In-The-Canal (ITC) types of hearing aids; their battery life is shorter, approximately 80 hours.
Size 13 / Orange Tab– An Orange Tab always means Size 13 batteries which are generally used in Behind-the-Ear (BTE) and In-the-Ear (ITE) hearing aids, and have an expected battery life of 240 hours.
Size 312 / Brown Tab – A Brown Tab always means Size 312 hearing aid batteries. These batteries are on the smaller side and normally maintain a charge for around 175 hours. These batteries are commonly found in In-The-Canal (ITC) and In-The-Ear (ITE) hearing aids.
Size 675 / Blue Tab – A Blue Tab always means Size 675, which is frequently used in Behind-The-Ear (BTE) hearing aids and cochlear implants; the 675 batteries are rather large and can hold a longer charge – as much as 300 hours.