The Size 312 (Brown Tab) is one of the most popular battery sizes in the world, striking a perfect balance between a compact physical footprint and the high energy density required for modern features like Bluetooth streaming and advanced noise cancellation.

Key Features

• Wireless Approved: Optimized for "High Level Hearing"—meaning they provide the steady current needed for hearing aids that sync with smartphones, TVs, and other wireless accessories without cutting out.

• Long Shelf Life: These batteries typically feature a 3-to-4-year shelf life, allowing you to stock up on multi-packs without worrying about power degradation.

• Eco-Friendly: 100% Mercury-free (Hg 0%), meeting modern environmental safety standards.

• Stainless Steel Housing: The high-quality triple-seal design prevents corrosion and leakage, protecting the sensitive electronics of your hearing aid.

Performance & Usage

• Battery Life: You can expect 3 to 10 days of use per battery. This varies based on the volume level, the severity of hearing loss, and how much you use Bluetooth streaming.

• The "Wait 1 Minute" Rule: These are Zinc-Air batteries, meaning they activate when oxygen enters the tiny holes on the top. For maximum life, wait 60 seconds after removing the brown tab before inserting the battery into your device.

• Compatibility: Fits all hearing aids that use size 312 batteries, including brands like Signia, Siemens, Phonak, Widex, Oticon, Starkey, and ReSound.

Quick Storage Tips

• Keep them at room temperature (avoid the fridge or hot cars).

• Store them in their original dial pack to prevent the metal surfaces from touching each other, which can cause a short circuit.