Overview
AG batteries, also known as button cells, are small, round batteries widely used in compact electronic devices. They are named after their silver oxide chemistry (Ag2O), which provides a stable voltage output and long shelf life. These batteries are favored for their high energy density and reliability in low-drain applications. Common types include SR (silver oxide) and LR (alkaline) series, each suited for specific devices. AG batteries are manufactured under strict standards to ensure consistent performance, making them indispensable in precision electronics like watches and medical implants.
Physical and Chemical Properties
AG batteries typically feature a stainless steel casing and a zinc anode with a silver oxide cathode. Their voltage ranges from 1.55V (silver oxide) to 1.5V (alkaline), with capacities varying by size and chemistry. The silver oxide variant offers a flatter discharge curve, ideal for devices requiring stable voltage. These batteries are non-rechargeable and designed for low-current applications. Their compact size (diameters of 5–12mm) and lightweight construction make them suitable for portable electronics. However, they are sensitive to extreme temperatures and moisture, which can degrade performance.
Main Applications
AG batteries are predominantly used in small electronic devices where space and weight are critical factors. Common applications include wristwatches, calculators, hearing aids, and key fobs. Their stable voltage output is crucial for precision instruments like medical devices (e.g., glucose monitors). In industrial settings, AG batteries power sensors and backup memory systems. Their reliability and long shelf life (up to 5 years) make them a preferred choice for OEMs in the electronics and healthcare sectors. Custom variants are also available for specialized equipment.
Safety and Storage
AG batteries are generally safe but require proper handling to prevent hazards. Avoid puncturing or exposing them to fire, as this can release harmful chemicals. Store in a cool, dry place to prolong shelf life and prevent leakage. Dispose of used batteries according to local regulations, as they contain trace amounts of heavy metals. Keep away from children, as ingestion can cause serious injury. Manufacturers often provide safety data sheets (SDS) detailing handling and emergency procedures.
B2B Procurement Guide
When sourcing AG batteries, prioritize suppliers with ISO certification to ensure quality and consistency. Verify specifications such as voltage, size (e.g., SR44, LR41), and expiration dates. Bulk purchases often reduce costs, but confirm storage conditions to avoid degradation. Consider partnering with manufacturers offering custom labeling or packaging for branding purposes. Test samples for performance in intended devices before large-scale orders. Reliable suppliers provide technical support and compliance documentation (e.g., RoHS, REACH).
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