Free compatibility tools
Answer a few quick questions and get an exact answer — no browsing tables, no guessing.
Battery Code Lookup
Type any code from your old battery — CR2032, AG13, LR6, brown tab, 2025 — and get voltage, dimensions, chemistry, all known aliases, and substitution notes.
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Bulb Base Identifier
Answer three questions about your bulb's connector type, pin count, and diameter. The tool identifies the base standard and tells you what's interchangeable.
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Fuse Lookup
Type any fuse code, color, or amperage — ATC, ATM mini blade, MAXI, AGC glass tube — and get the full spec including color code, dimensions, and voltage rating.
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Looking for specs instead of a tool?
The reference pages below have full dimension tables and substitution rules organised by standard.