The 2007 Honda Accord key fob typically uses a CR2032 3-volt lithium coin battery.
In this guide, we explain the correct battery size for the common 2007 Accord fob, how to replace it, and tips to verify fit and function. Regional variations exist, so if your fob has a different design, consult your owner’s manual or a dealer for confirmation.
Battery type and compatibility
Here is the expected battery for the typical 2007 Accord remote and guidance to verify you have the right one before you buy.
- Battery type: CR2032, 3-volt lithium coin cell
- Notes: Other sizes such as CR2025 or CR2016 are not typically compatible with the standard 2007 Accord fob and may not fit or provide adequate power
- Where to buy: grocery stores, electronics retailers, auto parts stores, or online
- Recycling: recycle used batteries per local regulations
Using the correct CR2032 battery ensures proper fit and power. If your fob behaves abnormally after replacement, inspect the battery orientation or consider internal contacts or circuit issues.
How to replace the battery
Follow these steps to replace the battery in a standard 2007 Honda Accord key fob. The steps assume a non-smart key fob with a removable metal key blade.
- Remove the mechanical key blade if present by unlatching or sliding it out.
- Open the fob casing along the seam with a small screwdriver or coin, taking care not to crack the plastic.
- Identify the old battery and note its orientation (which side is facing up).
- Carefully remove the old CR2032 battery using non-metallic tools if possible to avoid contact with the circuit board.
- Insert the new CR2032 battery with the positive (+) side facing up toward the springs.
- Snap the two halves back together and reinsert the mechanical key blade if applicable.
- Test the remote by pressing the buttons close to the car to confirm full function.
If the replacement does not restore function, check for bent contacts, corrosion, or water damage inside the fob, and consider professional service or replacement.
Summary
For a 2007 Honda Accord key fob, the standard battery is a CR2032 3V lithium coin cell. Replacement is usually simple and inexpensive, and correct orientation is key to restoring full remote functionality. If issues persist after replacement, consult a dealership or an automotive locksmith for further diagnostics.