About batteries.guide
The comprehensive, open-source database of objective battery specifications for every consumer battery type.
The Mission
Every time you need to buy batteries, you end up doing the same research all over again. What are the exact dimensions of a 9V? Which 18650 has the highest capacity? What devices use CR2025 vs CR2032? This information should be easily accessible, not scattered across dozens of manufacturer websites and buried in PDF datasheets.
batteries.guide attempts to solve this problem by creating a comprehensive, objective database of battery specifications. No opinions, no "best battery" recommendations — just reliable technical data sourced from manufacturer specifications and industry standards.
This is the battery reference site I wish existed every time I've searched for reliable specs.
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
I deliberately avoid recommendations or "best battery" rankings. The goal is to provide accurate, comprehensive specifications so you can make informed decisions based on your specific requirements.
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
batteries.guide is an independent project focused on providing accurate, objective battery specifications. I am not affiliated with any battery manufacturer or retailer.