The 2010 Honda Accord key fob uses a CR2032 3-volt lithium coin cell.
This article explains the battery type, how to replace it, where to buy one, and tips to keep your fob functioning properly.
Battery type and compatibility
Most 2010 Accord remotes use a CR2032 coin cell. Some regional or aftermarket remotes might use other sizes such as CR2025 or CR1616, but CR2032 is by far the most common for Honda fobs of this era. If you’re not sure which size your fob needs, inspect the old battery or consult the owner's manual or dealer.
Identifying the correct battery for your fob
If the battery size isn’t clearly printed on the old cell, open the fob gently to view the battery. Note the size embossed on the battery itself and replace with the same type (ideally a fresh CR2032 from a reputable brand).
How to replace the battery
Follow these steps to replace the battery in a typical 2010 Accord remote:
- Use a small flat-head screwdriver or a thin coin to gently pry apart the two halves of the fob. Work slowly to avoid damaging the plastic housing.
- Carefully remove the old battery and dispose of it properly.
- Insert a new CR2032 with the positive side facing up, aligning it with the contacts inside the fob.
- Put the two halves back together until they click, then test the remote by pressing a button to verify it’s working.
- If the remote still doesn’t respond, re-check the battery orientation and contact points, or consider replacing the fob shell if the internal contacts are damaged.
Replacing the battery should restore power to the remote in most cases. If you still experience issues, there could be an issue with the keyless-entry system or the car’s receiver, and a dealer or locksmith may be required for further diagnosis.
Where to buy and disposal
You can source CR2032 batteries at multiple outlets. Before buying, confirm the size matches your fob by checking the old battery or the fob’s manual:
- Online retailers and electronics stores
- Major supermarkets and pharmacies that stock electronics accessories
- Automotive parts stores and Honda dealerships
Dispose of old lithium coin cells at a recycling center or store that accepts batteries. Do not throw them in regular trash. Proper disposal reduces environmental impact and follows local regulations.
Summary
In brief, the 2010 Honda Accord key fob typically runs on a CR2032 3V lithium coin cell. Replacement is straightforward: open the fob, swap in a new CR2032 with the correct polarity, and reassemble. If problems persist after replacement, professional service may be required to diagnose the remote or vehicle receiver.