A312 (Size 312) Hearing Aid Battery
7.9 mm × 3.6 mm · 1.4V · 150 mAh
Before you search: A312 is also the name of a Samsung phone model and a vacuum cleaner. This page is about the A312 hearing aid battery — a size-10 zinc-air 1.4V button cell for hearing aids and audiology devices. A phone battery or vacuum battery is a completely different product and will not fit a hearing aid.
UL · UN38.3 · CE · RoHS · OEM MANUFACTURER
Technical Specification
1. Scope & Reference Standards
This specification provides the technical requirements of the A312. The battery complies with the international and EU standards listed below; unless otherwise specified, requirements and sizes shall meet or exceed the referenced standard.
2. Chemical System, Voltage and Designation
3. Operating Temperature Range
-20℃ ~ +60℃
Per IEC 60086-5 for aqueous-electrolyte batteries — confirm with our engineers for your specific device.
4. Size & Weight
5. Product Tags & Application
Hearing Aid Battery Size Chart — A10 vs A13 vs A312 vs A675
Zinc-air hearing aid cells are matched by size number and IEC code: the size number must fit the instrument. Capacity scales with the cell: size 10 is the smallest, size 675 the largest.
Equivalent & Cross-Reference
These references are electrically compatible. Always match size and voltage before replacing.
Common Applications
A312 is used every day in these classes of devices — the cell is matched to each duty below, and every pack is tested against the appliance profile before dispatch.
Hearing aids & audiology
Hearing aids and audiology devices: zinc-air button cells are the standard power source for behind-the-ear and in-the-ear instruments — the air-activated system delivers a steady 1.4V discharge with long shelf life in sealed packs.
Medical devices
Medical devices: sensors, monitors and infusion backup. We supply medical-channel same-spec cells with lot traceability and transport documents.
Wholesale Battery Supplier — Factory Direct
Buy in Bulk: A312 available for distribution in bulk packs, 5-pcs child-resistant cards or custom retail packaging under your brand. From blister cards to display boxes, your private label battery brand on every cell. Minimum order 50 cartons (about US$2,000) — a proven entry for chains testing private label battery lines.
EU Battery Regulation (EU) 2023/1542
Manufacturer declaration by DongGuan Tianqiu per Regulation (EU) 2023/1542 — compliance documents per model are stored on this site; models without a published declaration are issued per batch on request.
Chemical system (EU declaration): Zinc-Air · 1.4V
Primary batteries are non-rechargeable; keep out of reach of children.
Declaration Available on RequestDeclaration Available on Request
The official EU declaration for the A312 is issued by our compliance team on request — per-batch COA and test data included. Contact us for the current document package.
- IEC 60086-1:2021 — Primary batteries — Part 1: General
- IEC 60086-2:2021 — Primary batteries — Part 2: Physical and Electrical Specification
- IEC 60086-5:2021 — Primary batteries — Part 5: Safety of batteries with aqueous electrolyte
| Chemical system (EU declaration) | Zinc-Air |
|---|---|
| Nominal Voltage | 1.4V |
| Nominal Dimensions | 7.9 mm × 3.6 mm |
| Capacity | 150 mAh |
Lead (Pb) limitation exempt until 18 August 2028 for zinc-air button cells.
DongGuan Tianqiu Enterprise Co., Ltd.
TianQiu Industrial Park, Xinji Industrial Zone, Machong Town, Dongguan Guangdong, P.R.China
Post Code: 523142
E-mail: office@gdtianqiu.com
Apex CE Specialists GmbH
Grafenberger Allee 277, 40237 Düsseldorf, DE
Contact: Wells Yan
E-mail: Info@apex-ce.com
Tel: +49 21312066043
- Mercury (Hg): ≤ 0.0005% by weight
- Cadmium (Cd): ≤ 0.002% by weight (portable batteries only)
- Lead (Pb): ≤ 0.01% by weight (portable batteries only; zinc-air button cells exempt until 18 August 2028)
Zinc-air button cells are exempt from the lead (Pb) limit until 18 August 2028.
- REACH Regulation (EC) 1907/2006, Annex XVII — applicable restrictions complied with.
- EU POPs Regulation (EU) 2019/1021 — complied with.
Marking & Symbols — Regulation (EU) 2023/1542, Article 13
- CE marking — Indicates that the battery conforms to the applicable EU conformity requirements and is placed on the European market lawfully.
- Crossed-out wheeled bin symbol — Indicates that the battery must not be disposed of with household waste — separate collection is required.
- Do not recharge symbol — This battery is non-rechargeable; attempting to recharge it may cause leakage, fire or explosion.
- Service life marker — The XX.Xh circle mark shows the rated service life of the battery under reference discharge conditions.
- Keep out of reach of children symbol — A warning to prevent ingestion — small batteries cause severe burns in 2 hours; seek medical attention immediately.
Swallowing or ingestion of any button cell battery is a life-threatening injury!
Swallowing can lead to chemical burns, perforation of soft tissue, and death. Severe burns can occur within 2 hours of ingestion. Seek medical attention immediately.
Buying Guide: What Buyers Search for A312
If you are looking for an A312 hearing aid battery, match the size number and the PR63 reference on the old cell before ordering — zinc-air cells stay sealed until the tab is removed, so keep spares in the airtight strip.
Buyers often ask whether A312 works in another hearing aid: zinc-air cells are matched by size number (10/13/312/675) and IEC code PR63 — the size number must fit the instrument, and capacity grows with the cell. See the zinc-air size chart above.
For distributors and OEM buyers searching A312 bulk, price and lead time: we supply from 50 cartons (≈ US$2,000) with volume-laddered pricing, shipping marks and transport certificates — request the current price list for your volumes.
Procurement Guide — How to Order
From first inquiry to production line in five steps, with one engineer on your order from start to finish.
Send your inquiry
Quantity in cartons or pieces, destination port and market. We reply within 24 hours with a complete quotation.
Check specs, approve samples
Spec sheets first, then samples by express in 3–7 days so you can test fit and performance on your own device.
Confirm the written offer
Price, MOQ (from 50 cartons, approx. US$2,000) and lead time are fixed in the offer, and the price is held for 30 days.
OEM / ODM preparation
Your logo, pack design and artwork enter the prepress flow; before mass production we print one sample box for your visual approval.
Production, QC and delivery
Mass production runs about 35 days from sample approval, with per-batch COA and transport certificates (UN38.3 for lithium cells) in the shipment.
Project Cases
Real OEM programs from the same factory — the ones that use this cell first, then other lines running at our site.
Seasonal Remote-Control Battery Program for a Home Appliance Brand
Remote battery line for TV and AC accessories: LR6/2BP and LR03/2BP paper packs under the customer label, 24 pcs per box, built around two seasonal production windows.
CASE 02CR2032 Child-Resistant Cards for a Key Fob Distributor
Locksmith and car-accessory channel supply: CR2032 on 5-pcs child-resistant cards (EU retail requirement), quarter replenishment driven by store sell-out.
CASE 03AA/AAA Shrink Packs for Toy Gift Bundles
Holiday gift-set line: AA/AAA in 2/4/8-pcs shrink packs with cartoon artwork, mixed-SKU cartons dropped to the customer warehouse.
FAQ
What is an A312 battery?
The A312 is a Zinc-Air cell of 7.9 mm × 3.6 mm rated 1.4V. Capacity and packing data are listed in the specification table on our product page.
What is the A312 equivalent?
A312 matches reference PR63 in our battery catalog — always match size and voltage before replacing.
How long does an A312 last?
Service life depends on the device drain: typical use is 1–3 years, and shelf life is 3–5 years when stored cool and dry. Bulk figures are confirmed by our engineers.
Can an A312 be recharged?
No — the A312 is a primary (non-rechargeable) Zinc-Air battery. Attempting to recharge it may cause leakage, fire or explosion; for rechargeable options see our rechargeable battery page.
More common questions
Is an A312 the same as PR63?
A312 references PR63 in different naming systems — IEC, AG and retail labels name the same size cell differently.
Read the full answer →A312 vs A10 / A13 / A675 — what is the difference?
A312 and A10 / A13 / A675 share similar diameters but differ in thickness and capacity: A312 is 7.9 mm × 3.6 mm at 1.4V with 150 mAh.
Read the full answer →What size is an A312 battery?
A312 measures 7.9 mm in diameter and 3.6 mm in height (max dimension per IEC) — verify against your battery holder.
Read the full answer →What voltage is an A312?
The A312 is rated 1.4V — always match the device voltage requirement before replacing.
Read the full answer →A312 replacement — which battery should I buy?
Buy the same reference A312 (or its equivalent PR63) with the same voltage and dimensions.
Read the full answer →Does an A312 fit in hearing aid · zinc air · 1.4V devices?
A312 fits devices designed for its size class: the references hearing aid · zinc air · 1.4V are the common entries for such devices.
Read the full answer →Can I buy A312 in bulk?
Yes — A312 is supplied in bulk, raw cards or retail packs from 50 cartons (≈ US$2,000), with volume-laddered pricing.
Read the full answer →A312 wholesale price — how is it quoted?
Wholesale pricing is laddered by carton volume and packaging format: raw, card or retail pack each carry different unit costs.
Read the full answer →Where can I buy A312?
We supply A312 factory-direct worldwide — samples, bulk and OEM programs from the same production line.
Read the full answer →
Ready to Put Your Brand on a Great Battery?
Send us your logo and target market — we will reply with packaging options, MOQ and pricing within 24 hours.