The battery is a CR2032 3V lithium coin cell.
The 2020 Honda Accord key fob typically relies on a CR2032 battery. While this is the standard for most units sold in many markets, regional variations can exist. The guide below covers the common size, replacement steps, and practical tips to ensure proper seating and function.
Battery size and compatibility
Most 2020 Accord remotes use a CR2032 3V battery. Some regional variants or older fob designs may use CR2025 or a similar size, so it’s worth verifying before replacing.
Common options and how to verify which battery your fob requires are outlined below.
- CR2032 3V lithium coin cell is the standard battery for this fob.
- CR2025 is thinner and less common for this model year; using the wrong size can prevent proper seating or sealing.
- Check the inside of the fob cover for battery size markings or refer to the owner's manual for the exact specification.
In practice, most 2020 Accord remotes use CR2032; if you are unsure, inspect the old battery or contact a Honda dealer for confirmation.
Replacing the battery
Here are the steps to replace the key fob battery safely and correctly.
- Use a small flathead screwdriver or a coin to gently pry apart the two halves of the fob along the seam.
- Carefully separate the halves to expose the battery compartment.
- Note the orientation of the old battery (positive side facing up) before removal.
- Insert a new CR2032 battery with the positive (+) side facing up and seated flat.
- Rejoin the fob halves and press until they click back together.
- Test the fob by pressing the lock/unlock buttons or the ignition remote to ensure it operates correctly.
After replacement, avoid touching the battery terminals with bare metal, and keep the fob dry and away from high heat or strong impacts.
Tips and regional variations
Regional variations
While CR2032 is the standard for most 2020 Accord remotes, regional engineering differences can occur. If your fob seems to require a different battery, the size will be indicated in the manual or inside the battery compartment of the fob.
For guidance, you can also consult a Honda dealership or authorized service center if you’re unsure about the correct battery size for your specific vehicle's market or trim level.
Summary
Most 2020 Honda Accord key fobs use a CR2032 3V lithium coin battery. Replacement is straightforward: identify the correct size, open the fob carefully, replace with the battery oriented correctly, reassemble, and test. When in doubt, verify with the owner's manual or a dealer to avoid using the wrong size.