Button Cell Batteries Selection Guide: Technical Criteria & Application Standards
Button Cell Batteries selection guide: technical parameters, mounting and compliance standards, and Varta comparison.
A button cell is a single-cell battery that fits into small devices with its flat, coin-shaped metal housing. It is used in low-current applications such as wristwatches, car keys, calculators, kitchen scales, digital thermometers, and the clock and memory backup on a computer motherboard. This category lists Varta-branded 3 V lithium button cells such as the CR2032, CR2025, CR2016, CR2450 and CR1220, the 1.55 V silver oxide V76PX watch battery, and the 1.5 V alkaline V12GA (LR43) and V10GA (LR54) batteries. Choose the battery code according to the code on the old battery or in the device manual, the chemistry and rated voltage according to the type the device requires, and the diameter and thickness according to the battery compartment. In a CR code, the first two digits give the diameter in millimeters and the last two digits give the thickness in tenths of a millimeter: the CR2032 is 20 mm in diameter and 3.2 mm thick. The CR2032, CR2025 and CR2016, which have the same 20 mm diameter and 3 V voltage, should not be confused with each other; because their thicknesses and capacities differ, they may not seat in the compartment or may not make contact. The Button Cell Batteries category on Welibaba includes 12 active models from leading manufacturers such as Varta.
Key Technical Parameters for Selecting Button Cell Batteries
To specify the right Button Cell Batteries model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Manufacturer & Series | Varta | Select according to panel and installation compatibility |
Installation, Compatibility, and Commissioning Checklist
- Electrical & Mechanical Matching: Confirm that rated voltage, current capacity, and mounting dimensions align with the upstream and downstream components in Batteries.
- Environmental & Enclosure Rating: Check IP protection class, housing material, and terminal capacity for dusty, humid, or high-vibration industrial environments.
- Related Product Groups: If your application calls for a different form factor or rating, compare sibling categories such as 9V Batteries, D Size Batteries, AA Batteries.
Frequently Asked Questions
What is the first parameter to check when selecting Button Cell Batteries?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Button Cell Batteries page to narrow down compatible series.
Which Button Cell Batteries brands are available on Welibaba?
Welibaba currently stocks 12 active models in this category from manufacturers including Varta, complete with verified specifications and unit pricing.
How can I compare Button Cell Batteries models by manufacturer part number?
You can search directly by manufacturer SKU/order code or use the category filter panel to compare equivalent models across brands side by side.