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High-precision miniature coin cell housings for medical and micro battery R&D applications
The Cell Lab Stainless Steel AG3 Coin Cell Cases are precision-fabricated micro battery housings designed for miniature energy devices such as hearing aids, sensors, and medical research batteries. Constructed from corrosion-resistant 304 stainless steel, each case set includes both the anode and cathode caps, along with a polypropylene (PP) sealing gasket for reliable insulation and leak protection.
With standard AG3 dimensions of Ø7.9 mm × 3.6 mm, these housings are widely used in micro battery development, electrode testing, and prototype fabrication, ensuring stable electrochemical performance under laboratory and pilot-scale conditions.
High-Purity 304SS Construction – Excellent corrosion resistance compatible with most battery electrolytes.
Complete Cell Set – Includes both anode and cathode shells plus a PP sealing gasket for secure assembly.
Micro Battery Compatible – Ideal for AG3-size cells used in hearing aids and compact power systems.
Precision-Machined Interior – Ensures clean surfaces and stable contact for high-purity electrode testing.
Research & Medical Applications – Perfect for micro battery R&D, biosensor power systems, and device prototyping.
| Parameter | Specification |
|---|---|
| Pack Size | 100 pcs per pack |
| Material | 304 stainless steel (304SS) |
| Overall Dimensions | AG3: Ø7.9 mm × 3.6 mm |
| Weight | 0.34 g (0.012 oz) per set |
| Sealing Gasket | Polypropylene (PP) |
Hearing aid and medical micro battery development
Coin cell prototyping and electrode testing
Miniature power supply research
Sensor and wearable electronics integration
Laboratory-scale lithium-ion and zinc-air micro cells
Q1: What is included in each AG3 coin cell case set?
A1: Each set contains one anode case, one cathode case, and one PP sealing gasket.
Q2: Are these cases compatible with liquid electrolytes?
A2: Yes. The 304SS construction ensures high corrosion resistance in common electrolytic environments.
Q3: Can the gasket be replaced or customised?
A3: Yes. Replacement polypropylene or alternative sealing materials can be supplied upon request.
Q4: What is the internal surface finish like?
A4: The interior is precision-polished to ensure clean contact and low contamination for electrochemical research.
Q5: What are typical applications?
A5: These housings are widely used in hearing aid batteries, micro battery R&D, and compact energy device testing.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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