Hearing Aid Batteries

Battery life depends on size, how much streaming you do, and how loud your typical environments are. As a rough guide: size 10 batteries last 3 to 7 days, size 312 lasts 5 to 10 days, size 13 lasts 9 to 14 days, and size 675 lasts 14 to 21 days.

Heavy Bluetooth streaming for phone calls, TV, or music can cut runtime by 30 to 50 percent. After peeling the tab, wait 60 seconds before inserting the battery — that lets the zinc fully activate and gives you the longest possible life. If your batteries are dying noticeably faster than expected, call our Babcock Road office so we can check for a hardware issue.

For many San Antonio patients, the answer is yes — especially if dexterity is becoming an issue, if you dislike fiddling with tiny tabs, or if you travel often. Rechargeable hearing aids deliver a full day of use from an overnight charge and eliminate the recurring cost (and landfill load) of disposable batteries.

That said, disposables still have advantages: an instant swap when you're out and about, no charger to pack, and no degradation in battery capacity a few years in. Most modern RIC and BTE models come in both versions, so the choice usually comes down to routine and lifestyle rather than hearing loss. We'll walk through it together at your next visit.

Zinc-air batteries start losing capacity the moment you peel the tab and expose them to air, but a sealed, unopened pack stays fresh for up to three years when stored properly. Keep extras at room temperature in a cool, dry place — a drawer or cabinet works well.

A few things to avoid: don't store batteries in the refrigerator (condensation can damage them), don't carry loose batteries with coins or keys (they can short out), and don't peel the tab until you're ready to use the cell. San Antonio summers can spike heat inside a parked car, so keep them indoors and out of direct sun. Call (210) 695-4708 if you'd like to stock up.