The 2020 Honda Accord key fob uses a CR2032 3V lithium coin battery. This compact cell is the standard power source for most Honda remotes from that generation and is readily available at automotive stores and retailers.
Battery size and compatibility
Most 2020 Accord remotes share the same battery type, but Honda offered a few configurations depending on market and trim. If you’re unsure, check your owner’s manual or inspect the back cover for a stamped size such as CR2032. While CR2032 is typical, a rare alternative could be listed on the battery compartment.
Confirming the battery size
To be certain, look for the size imprint on the back of the fob or remove the battery and read the size stamped inside. If there’s any doubt, call a dealership or check the documentation that came with your car.
Replacing the battery: step-by-step
What you’ll need to replace the battery safely:
- CR2032 3V lithium coin battery
- Small flat-head screwdriver or a coin to gently pry open the fob
- Clean cloth or gloves to handle the battery
- Optional: anti-static wrist strap
Proceed with care to avoid damaging the fob’s electronics or the rubber seal that keeps water out.
- Remove the hidden mechanical key blade by pressing the release tab and sliding it out.
- Use a small flat-head screwdriver or a coin to pry open the back cover of the fob, starting at a notch and lifting gently to avoid breaking the housing.
- Carefully lift the old battery out, noting which side was facing up (positive/+ side typically faces up).
- Insert the new CR2032 with the + side facing up, ensuring it sits flat and fully seated in the battery cavity.
- Snap the back cover back into place and reinsert the mechanical key blade.
- Test the fob by locking/unlocking the doors and using any remote-start functions if equipped.
After replacing the battery, take a moment to test the fob in close range to ensure all functions work before you rely on it in daily use.
Additional tips and caveats
If you can’t get the fob to work after replacement, the issue might be a damaged circuit board, worn contacts, or a dead chip inside the fob. In such cases, visiting a Honda dealer or a qualified locksmith can help diagnose and replace the fob if needed. It’s also wise to recycle old batteries properly per local guidelines.
Summary
In summary, the 2020 Honda Accord key fob uses a CR2032 3V lithium coin battery. Replacement is straightforward with basic tools: pry open the fob, swap in a fresh CR2032 with the correct orientation, and reassemble. Always confirm the exact battery size if you have a non-U.S. version or an unusual remote configuration, and test the fob after replacement to ensure full functionality.
What size battery does a 2020 key fob take?
CR2032
| 2005-2010 | CR1616 |
|---|---|
| 2015-2020 | CR2032 |
| 2011-2015 | CR2032 |
| 2006-2014 | CR2032 |
| 2019-2021 | CR2032 |
Can I use CR2032 instead of CR2025 in a key fob?
Fit and Functionality:
However, if it's too tight or prevents the case from closing properly, it might be better to stick with the CR2025 to avoid damaging the key fob. In summary, you can use a CR2032 instead of a CR2025 as long as it fits properly in the battery compartment of your car key.
What battery does a 2020 Honda Accord key fob use?
So. And you can see there's two halves. Here. We can get rid of the other half and then here is the battery. Now you'll notice that the battery is hooked in on this side. Here it's a it's a CR 2032.
What size battery does my Honda Accord key fob take?
So it doesn't fly out and pry underneath it the two flexible clips will allow it to pop. Out. Now bring in the new battery. When you put it into the key fob.