Quick Answer: The best size 312 hearing aid battery of 2026 is the Rayovac Extra Advanced 312 — consistent voltage, mercury-free zinc-air chemistry, and a long shelf life. Power One (Varta) 312 is the premium pick for the longest runtime if you stream audio heavily, and Amazon Basics 312 is the best value once you’re buying in bulk. Size 312 (brown tab) is the single most common hearing aid battery size, used in most RIC and many ITE models — so it’s also the size most worth buying in a bigger pack instead of a small blister card.
If your hearing aid takes a disposable battery, odds are good it’s a 312 — the brown-tabbed cell is the most widely used size across RIC and ITE OTC hearing aids. This guide ranks the best size 312 batteries specifically (not the full lineup of 10/312/13/675 covered in our general hearing aid batteries guide) and does the math on how many you actually need, so you’re not stuck reordering a tiny 8-pack every few weeks or hoarding more than you’ll use before they expire.
Size 312 batteries by the numbers
- 100 to 120 batteries per year, per hearing aid. Size 312 cells run roughly 3 to 12 days each depending on streaming use, per battery-retailer lifespan data — so a single aid burns through around 100–120 cells annually, and a two-aid wearer goes through close to 240 batteries a year.
- 3 to 4 years unopened shelf life. Sealed zinc-air cells carry a printed “best before” date and hold their charge for 3 to 4 years at room temperature if the tab stays on, per manufacturer guidance (Phonak’s own spec sheet lists a 2-year minimum). A 100-count box for a pair of 312-powered aids gets used in well under 5 months — nowhere near that expiration window.
- ~7.9mm diameter, brown tab. Size 312 is identified by its brown pull-tab and is interchangeable across every major brand — a brown Rayovac 312 works identically to a brown Duracell or Power One 312.
- 28.8 million adults could benefit from hearing aids, per NIDCD estimates — and with rechargeable models still a minority of the existing installed base, size 312 remains the single highest-volume disposable size in daily use.
Our top size 312 batteries at a glance
| Brand | Best for | Common pack sizes | Notable | Rating |
|---|---|---|---|---|
| Rayovac Extra Advanced 312 | Best overall | 8, 24, 60-count | Mercury-free, steady voltage curve | ★★★★★ |
| Power One (Varta) 312 | Longest runtime | 8, 60-count | German-made, premium cell | ★★★★½ |
| Duracell Hearing Aid 312 | Most available | 8, 36-count | Long "EasyTab" pull strip | ★★★★½ |
| Amazon Basics 312 | Best value (bulk) | 60, 100-count | Lowest cost per battery at scale | ★★★★ |
1. Rayovac Extra Advanced 312 — Best Overall
Rayovac Extra Advanced Size 312
- The benchmark size 312 cell — steady output through most of the discharge curve instead of a slow fade before the low-battery beep.
- Mercury-free, with a multi-year shelf life when the tab stays sealed at room temperature.
- Sold in 8-, 24-, and 60-count packs, so you can size the purchase to how fast you actually go through them.
Rayovac is the 312 that most audiologists hand out as a default, and the reason is consistency — you get clear sound right up until the device beeps rather than gradually muffled audio for the last day or two.
Reordering batteries is exactly the kind of small, recurring purchase where fast shipping pays for itself — if you’re not already a member, Amazon Prime’s free 30-day trial covers the 2-day delivery so a dead battery doesn’t mean a day without your hearing aid.
2. Power One (Varta) 312 — Longest Runtime
Power One by Varta, Size 312
- Premium zinc-air cells manufactured by Varta in Germany.
- Users commonly report an extra day or two of runtime versus mainstream brands at size 312, where capacity is already smaller than the bigger 13 or 675 cells.
- Best value if you stream calls, music, or TV audio for hours a day, since streaming is the single biggest drain on a size 312 cell's limited capacity.
Size 312 has the least capacity headroom of the four standard sizes below 675, so the difference a premium cell makes is more noticeable here than on a bigger battery — worth the small premium if you’re a heavy streamer.
3. Duracell Hearing Aid 312 — Most Widely Available
Duracell Hearing Aid, Size 312
- Stocked at nearly every pharmacy and big-box store in the 312 size specifically, so a same-day pickup is almost always an option.
- The long "EasyTab" pull strip is easier to grip than a standard tab — a real difference at this small size for anyone with reduced dexterity.
4. Amazon Basics 312 — Best Value in Bulk
Amazon Basics Hearing Aid Batteries, Size 312
- The lowest cost-per-battery among reputable brands, sold in 60- and 100-count boxes built for the ~240-a-year pace a pair of 312-powered aids actually uses.
- At that usage rate, even a 100-count box is fully used well inside the 3-to-4-year zinc-air shelf life — there's no real staleness risk from buying the bigger box.
How much should you actually buy?
- Light user (no streaming), one aid: roughly 100 batteries/year — a 60-count box lasts about 7 months.
- Average user, two aids: roughly 240 batteries/year — a 100-count box lasts under 5 months, comfortably inside the 3-to-4-year shelf life.
- Heavy streamer, two aids: runtime skews toward the low end of the 3-to-12-day range, so expect to reorder a 100-count box roughly every 3-4 months.
The math argues against the small 8-count blister cards that pharmacies sell at a markup — at typical usage, you’re not risking expired batteries by buying the 60- or 100-count box, and the per-battery price usually drops by a third or more.
The bottom line
The Rayovac Extra Advanced size 312 is the best all-around pick — consistent output, mercury-free, and sold in pack sizes that match real usage. Step up to Power One if you stream heavily and want the extra runtime, grab Duracell when you need a pack today from a local store, or buy Amazon Basics in bulk once you know your real usage rate. However you choose, confirm the brown tab and “312” printed on the battery before you order — for the full sizing rundown across 10, 13, and 675 as well, see our complete hearing aid batteries guide. To keep the rest of your hearing aid running, don’t skip a good hearing aid cleaning kit and a hearing aid dryer — wax and moisture cause most avoidable failures. Or browse size 312 hearing aid batteries on Amazon.