Ford Key Fob Battery Replacement
Many Ford fobs use a CR2450; newer models may take CR2032. We supply the correct OEM battery factory direct, with bulk and custom label for auto brands.
What battery size and type does a Ford key fob use?
Many Ford fobs use a CR2450; newer models may take CR2032. That is a 3.0V lithium coin cell, 24.5mm across and 5.0mm thick, with a rated capacity of 550mAh ~ 620mAh. Always match the number printed on the old cell — it is the size your fob was built for.

CR2450 Specifications
| Model | CR2450 |
|---|---|
| Chemistry | Lithium |
| Voltage | 3.0V |
| Diameter | 24.5mm |
| Thickness | 5.0mm |
| Capacity | 550mAh ~ 620mAh |
| Equivalent to | CR2450 = ECR2450 = DL2450 |
A 24.5mm, 3.0V lithium coin cell. Equivalent to CR2450 = ECR2450 = DL2450. See the full cross-reference table.
How to Replace a Ford Key Fob Battery
- Open the key fob with a flat-head screwdriver at the seam or the built-in key slot
- Note the battery orientation before removing it
- Remove the old CR2450 cell with a small tool or tweezers
- Insert the new CR2450 battery with the correct polarity
- Snap the case closed and test the lock/unlock and start buttons
Which other key fob battery types are there?
What do buyers ask about Ford key fob batteries?
What battery does a Ford key fob use?
What size battery does a Ford key fob take?
What type of battery is in a Ford key fob?
How do I replace the battery in a Ford key fob?
How long does a Ford key fob battery last?
Why is my Ford key fob not working after a battery change?
Which key fob battery size and type does each car brand use?
This table lists the cell each brand's key fobs most commonly take, with that cell's published diameter and thickness. Ford, Nissan, Honda, Toyota and Mazda are covered here. The cell a specific model year uses can differ, so always read the number printed on the old battery before ordering replacements.
| Car brand | Common key fob cell | Cell size | Brand page |
|---|---|---|---|
| Nissan | CR2032 | 20mm × 3.2mm | Nissan key fob battery → |
| Honda | CR2032 | 20mm × 3.2mm | Honda key fob battery → |
| Toyota | CR2032 | 20mm × 3.2mm | Toyota key fob battery → |
| Ford (this page) | CR2450 | 24.5mm × 5.0mm | Ford key fob battery → |
| Mazda | CR2032 | 20mm × 3.2mm | Mazda key fob battery → |
How do I buy CR2450 key fob batteries in bulk?
Factory-direct CR2450 cells for key fobs and automotive wholesale. Get a quote today.