The typical replacement battery for a 2019 Honda key fob is a CR2032 3-volt coin cell. This is the standard size used in most Honda remotes from that year, though there are a few design variations that can affect the exact type.
Most 2019 Honda models—such as the Civic, Accord, CR-V, Pilot, and others—use a CR2032 battery in the standard remote fob. However, there are a few slimmer or region-specific fobs that could use a CR2025. To be certain, check the battery itself when you remove the back cover or consult your owner’s manual or dealer. If the fob has a printed battery size on the old cell, use that exact size for a replacement.
Common battery types you might encounter
The following list outlines the battery sizes you are most likely to encounter in 2019 Honda key fobs.
- CR2032 — 3V coin cell; by far the most common battery for 2019 Honda key fobs (two-button and three-button remotes).
- CR2025 — 3V coin cell; less common for 2019 models, typically found in some thinner or older fob designs; verify before purchasing.
When in doubt, verify the exact size by inspecting the battery seated in your fob or checking the owner’s manual. Using the wrong size can prevent the fob from functioning correctly, and forcing a wrong-sized battery can damage the contacts.
Replacing the battery: step-by-step guide
Below is a practical, step-by-step approach to replacing the battery in a typical 2019 Honda key fob. These steps assume a CR2032 battery; if your fob requires CR2025, use that size instead.
- Purchase the correct replacement battery (CR2032 for most 2019 Honda fobs; CR2025 only if your fob specifically requires it).
- Prepare a clean, flat workspace and gather a small flat-head screwdriver or a coin if your fob uses a snap-fit seam.
- Turn the fob over and locate the seam where the two halves meet. Gently pry the back cover apart at the seam to open the fob.
- Carefully remove the old battery, noting the orientation. The positive (+) side is usually facing up toward the top of the fob, but follow the orientation of the contacts in your device.
- Insert the new battery with the correct orientation, ensuring it sits flat and fully contacts the metal terminals.
- Snap the fob halves back together until they click, then test the fob by pressing a button to confirm it works properly.
Dispose of the old battery responsibly at a recycling center or an electronics retailer that accepts spent coin cells. Many stores offer battery recycling programs, which helps protect the environment.
Where to buy and practical tips
The following options are reliable places to purchase a replacement battery and related supplies. Consider convenience, price, and return policy when choosing a source.
- Honda dealership or authorized service center — reliable, with model-specific guidance.
- Auto parts stores (e.g., AutoZone, Advance Auto Parts, O'Reilly) — commonly stock CR2032 and CR2025 batteries.
- Online retailers (Amazon, major electronics shops) — convenient and often inexpensive; check seller ratings and battery authenticity.
- Local supermarkets or drugstores with electronics sections — may carry basic coin-cell batteries like CR2032.
Tip: Always confirm the exact battery size for your specific fob before purchasing. If you’re unsure, bring the old battery or the fob to the store so staff can help identify the correct size. Some fobs also have a code printed on the battery itself once the back is opened, which can be a quick reference for the replacement size.
Summary
For most 2019 Honda key fobs, the standard replacement battery is a CR2032 3-volt coin cell. While CR2025 may appear in a minority of designs, CR2032 is by far the norm. Open the fob, verify the battery type and orientation, replace with a matching size, and reassemble. Buy from trusted sources, recycle old batteries properly, and consult your owner’s manual or dealer if you’re uncertain.