Most Honda Accord key fobs use a CR2032 lithium coin cell. Some older or regional models may use CR2025 or other coin cells; verify by inspecting the battery inside your fob or consulting your owner's manual.
Key fob designs vary by generation and market, so the exact type can differ. This article explains the most common battery types you’re likely to encounter and how to replace them safely.
Common battery types by generation
Here are the battery types you’re most likely to encounter in Honda Accord key fobs, with notes on when they appear and how to identify them.
- CR2032 — The standard 3-volt lithium coin cell used by the majority of modern Accord remotes. It’s the most common choice for recent model years.
- CR2025 — A thinner 3-volt coin cell used in some older or regional fobs; may be found in a subset of Honda remotes.
- CR1616 — A smaller 3-volt coin cell that appears in a few very early or compact fob designs; much less common in current models.
Because battery types can vary by year and market, always check the markings inside the fob or your owner's manual to confirm the correct replacement.
How to replace the battery in your Honda Accord key fob
Follow these general steps to replace the key fob battery, keeping safety and proper orientation in mind.
- Carefully pry apart the fob along the seam using a small flat tool or a fingernail; avoid forcing the case open to prevent damage.
- Remove the old battery and take note of its type (CR2032, CR2025, or CR1616) as printed on the battery.
- Insert a fresh battery of the same type with the correct polarity, typically with the + side facing up, as indicated in the fob.
- Reassemble the fob and test all functions (lock, unlock, trunk, panic) to confirm proper operation.
- Recycle the old battery according to local regulations and keep the fob dry and clean.
If the fob still doesn’t work after replacement, the issue may be other components or reprogramming may be required. Contact your Honda dealer or a qualified locksmith for assistance.
Summary
In most modern Honda Accord key fobs, the replacement battery is a CR2032 lithium coin cell. A CR2025 or, rarely, a CR1616 may appear in older or regional variants. Always verify by inspecting the fob or consulting the owner’s manual, and follow proper replacement steps to ensure continued remote operation.