About batteries.fyi
batteries.fyi is a battery specification reference. Dimensions, voltages, capacities, chemistries, and standard designations for consumer battery types, sourced from manufacturer datasheets and IEC/ANSI standards.
No rankings. No recommendations. The data is here. What you do with it is your call.
Data Sources & Methodology
Primary Sources
- IEC 60086 series - International standard for primary batteries
- ANSI C18 series - American National Standards Institute battery specifications
- Manufacturer datasheets - Energizer, Duracell, Panasonic, Samsung SDI, LG Chem, Sony
- Industry catalogs - Technical specifications from battery suppliers
Quality Standards
- Cross-reference multiple sources for verification
- Cite original manufacturer specifications
- Include uncertainty ranges where appropriate
- Regular updates as new products are released
- Trusted domain whitelist for source verification
Objective Data Only
No recommendations. No "best battery" rankings. Accurate specifications sourced from manufacturers and standards bodies.
Trusted Sources Policy
To maintain credibility and data quality, only sources from trusted domains are displayed on battery specification pages.
Accepted source types:
- Official manufacturer websites (Energizer, Duracell, Panasonic, etc.)
- Standards organizations (IEC, ANSI)
- Established technical references (Battery University, Battery Equivalents)
- Trusted retailers with technical specifications
- Wikipedia articles (crowd-sourced but established)
Sources like random Google Docs, unverified blogs, or questionable domains are automatically filtered out.
What's Included
Technical Specifications
Voltage, capacity, dimensions, weight, temperature ranges, discharge characteristics, and cycle life data.
Standard Designations
IEC codes, ANSI codes, common names, and cross-references between different naming systems.
Device Compatibility
Common devices and applications for each battery type, helping you find the right replacement.
Current Database
Currently Documented
Traditional Batteries
- AA (LR6)
- AAA (LR03)
- AAAA (LR61)
- C (LR14)
- D (LR20)
- N (LR1)
- 9V (6LR61)
Lithium-ion
- 18650
- 21700
- 26650
- 14500 (AA size)
- 10440 (AAA size)
Button Cells
- CR2032
- CR2025
- CR2016
- LR44 (AG13)
- CR123A
Built by Kevin Smith at Centricle. No ads. No sponsored content. No affiliate links.