Observed arrival · 2026-09-27
CoinCellChart: a sourced coin-cell reference
A reference for comparing button-cell dimensions, equivalents, and the batteries listed for car key fobs.
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◎Niche
◉Human
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- For
- People identifying replacement coin cells
- Worth noticing
- The page says it shows both sources where they disagree, and gives source-check dates for its listed figures.
Field notes
The size table gives dimensions in millimetres and nominal voltage, with individual links to named maker datasheets. The key-fob section covers Ford, Nissan, and Subaru and describes 35 model-year rows; its stated sources include owner’s manuals and Panasonic’s key-fob finder. A prominent warning directs readers to US poison-control resources for swallowed or lodged cells.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue