What size battery does a Dodge key take?
Most Dodge key fobs today use a CR2032 3-volt lithium coin cell, with some older models using CR2025 or CR1632. This guide outlines the common sizes you may encounter, how to verify the right one for your fob, and how to replace it safely.
Common battery sizes for Dodge key fobs
Below is a quick reference to the coin-cell sizes most commonly found in Dodge remotes, plus notes on where they typically appear.
- CR2032 — the standard for the vast majority of modern Dodge key fobs (20 mm diameter, 3.2 mm thick).
- CR2025 — used in some earlier or lighter-duty fobs; slightly thinner (20 mm diameter, 2.5 mm thick).
- CR1632 — found in a few older or compact fobs; smaller diameter (16 mm) and thinner (3.2 mm).
When in doubt, check the old battery for its imprint, consult your owner’s manual, or contact a Dodge service advisor to confirm the exact size for your model and year.
How to identify the correct size for your fob
To confirm the exact size for your Dodge key fob, inspect the battery compartment, compare dimensions, or consult the vehicle documentation. Most fobs open along a seam or with a small release, revealing a single coin-cell battery beneath a protective cover.
How to replace the battery
Replacing the battery is typically straightforward and can be done at home with a few basic steps. Gather a compatible battery, a small flat tool, and a clean workspace before you begin.
- Identify the seam or release point on the fob and gently pry it open with a small flat tool or by twisting apart at the seam. Do not force the plastic or damage the internal electronics.
- Carefully remove the old battery, noting its orientation (which side is facing up).
- Insert the new battery with the correct polarity (usually the positive (+) side facing up, but verify you’re placing it the same way as the old battery).
- Align the two halves of the fob and press them together until they click securely.
- Test the fob by locking/unlocking the doors or using the panic button to ensure the battery is functioning properly.
- Store any removed components safely and discard the old battery in an appropriate recycling container.
When replacing, always use the same battery size and type to prevent damage or improper contact. If the fob doesn’t work after replacement, recheck polarity and seating, or consult a dealership or locksmith for diagnostics.
Model year variations
Newer Dodge key fobs (2010s–present)
Most current Dodge models, including recent Charger, Challenger, Durango, and Ram variants, use CR2032 batteries. These fobs are designed for easy DIY replacement, with a straightforward seam opening and clear orientation indicators on the battery.
Older Dodge models
Earlier Dodge remotes may have used CR2025 or CR1632 batteries depending on the generation and trim. If you’re working with a legacy vehicle, verify the exact size by checking the battery you remove or consulting the owner’s manual or a dealership.
Where to buy and safety notes
CR2032, CR2025, and CR1632 batteries are widely available at auto parts stores, electronics retailers, and online. When replacing, avoid touching the battery’s contact surfaces, store batteries away from metal objects to prevent short circuits, and dispose of spent batteries according to local regulations.
Summary
The majority of Dodge key fobs use a CR2032 3-volt lithium coin cell, with some older models using CR2025 or CR1632. To replace, open the fob, swap in the correct size with the proper polarity, reseal, and test. If in doubt, consult your owner’s manual or a dealership to confirm the exact battery type for your specific model and year.
What size battery does a 2017 RAM key fob take?
The correct battery for a 2017 Ram key fob is a CR2032 3-volt lithium coin battery. Some sources note that a CR2450 battery may also work, but it's thicker and the CR2032 is the standard and most reliable replacement. To replace it, you will need to open the fob by removing the emergency key and prying the case open with a small flathead screwdriver or similar tool.
You can watch this video for a visual guide on replacing the battery in your Ram key fob: 48sKey Fob RobYouTube · Aug 3, 2025
What you'll need
A new CR2032 battery and A small flathead screwdriver or a prying tool.
Step-by-step guide
- Remove the emergency key: Push the release button and pull the mechanical key out of the fob.
- Pry the fob open: Insert the flathead screwdriver into the seam near where the emergency key was and gently twist to pop the cover open. You may need to do this on both sides to separate the case.
- Remove the old battery: You can often use the screwdriver or a similar tool to pry out the old CR2032 battery, or sometimes tapping it against a surface will help dislodge it.
- Insert the new battery: Place the new CR2032 battery into the holder with the positive (+) side facing up.
- Snap the case back together: Align the two halves of the fob and press them together until they click into place.
- Reinsert the emergency key: Slide the mechanical key back into the fob until it locks.
What kind of battery does a 2018 Dodge Ram key fob take?
And takes one CR 2032 battery it's really easy to change the battery yourself at home all you will need is a uh flathead screwdriver. And one of these batteries.
Can I use CR2032 instead of CR2025 in a key fob?
Yes, you can likely use a 2032 battery instead of a 2025 in your key fob, as both are 3V and the 2032 is thicker with higher capacity, meaning it may last longer. However, check if the extra thickness will prevent the fob from closing properly, as forcing it could damage the device. If the 2032 is too tight, stick with the 2025.
Key differences and considerations
- Size: The CR2032 is $3.2$mm thick, while the CR2025 is $2.5$mm thick.
- Voltage: Both have the same 3V output, so the device will function correctly if the battery fits.
- Capacity: The CR2032 has a higher capacity, which can lead to a longer lifespan.
- Fit: The main issue is the CR2032's extra thickness. It might be too tight to close the fob, or the extra pressure could cause damage.
- Outcome: If the 2032 fits and the fob closes without force, it should work fine and may last longer. If it's too tight, it's safer to use the correct 2025 size.
What size battery for a Dodge key fob?
Most modern Dodge key fobs use a CR2032 3-volt lithium coin cell battery. To find the exact battery for your vehicle, check the owner's manual or look for the battery model number printed on the old battery before replacing it.
This video demonstrates how to replace the key fob battery: 58sKey Fob RobYouTube · Sep 4, 2023
How to replace the battery
- Remove the emergency key: Press the small release button on the fob and slide the physical key out.
- Pry the case open: Insert the tip of the emergency key or a small flathead screwdriver into the slot where the key was and gently twist to separate the two halves of the fob.
- Remove the old battery: Use a small flathead screwdriver to gently pry the old battery out of its compartment. Note the direction of the positive (+) and negative (-) sides.
- Install the new battery: Place the new CR2032 battery into the compartment with the positive (+) side facing down.
- Snap the fob back together: Align the two halves of the fob and press them firmly together until they snap into place.
- Reinsert the emergency key: Slide the physical key back into the fob.
