Key Fob Replacement Batteries for Mazda (2019-2025) 3 6 CX-5 CX-30 CX-9 CX-50 CX-90 CX-3 CX-70 MX-5 Miata (Pack of 2) Smart Remote (CR2032)
Quick take
This two-pack of CR2032 (3V) batteries is made to replace the smart remote battery for several Mazda models and model years, with DIY replacement that does not require programming. The main thing to get right is fob compatibility (especially the fob button placement style), so double-check your key against the fitment/picture guide before ordering.
Pros and cons
Pros
- Designed specifically for Mazda smart remotes that use CR2032 3V batteries (pack of 2).
- DIY-friendly replacement process, no programming required.
- Reviewers report the batteries work well in their Mazda key fobs and are quick to install.
- Value-oriented option for replacing both alerts at once, since it includes two batteries.
Cons
- Compatibility depends on the exact remote type, not just the vehicle model (confirm via the fitment/picture guide).
- Not every Mazda model is supported, and the listing includes exclusions (for example, Mazda2 and Mazda5).
- Does not include the actual key fob, only the batteries.
What buyers think
Buyer-review evidence is limited but consistent: multiple verified reviewers describe the batteries as working as expected in their Mazda smart remotes, with installation described as straightforward. Several comments focus on ease of replacement and getting alerts resolved, and one review highlights cost compared with other places. Overall, the recurring themes are that the batteries fit the intended fobs and are not difficult to swap.
What these batteries are (and what you get)
This accessory is a two-pack of CR2032 batteries for 3V Mazda smart remote key fobs. The pack includes two replacement cells, not the key fob itself.
Because CR2032 is common in many devices, the key difference here is vehicle and remote compatibility. These batteries are intended for Mazda smart remotes that match the supported model years and fob style, including remotes with buttons on the side of the fob.
Compatibility checklist, so you do not buy the wrong thing
Use the fitment/picture guide as your deciding factor. A mismatch can happen even when CR2032 is the battery size you expect.
Generally compatible Mazda smart remote models (as listed)
- Mazda3 (2019-2024)
- Mazda6 (2019-2021)
- CX-3 (2019-2021)
- CX-30 (2020-2024)
- CX-5 (2020-2024)
- CX-50 (2023-2024)
- CX-70 (2024)
- CX-90 (2024, including CX-90 PHEV 2024)
- CX-9 (2019-2023)
- MX-30 (2022-2024)
- MX-5 Miata (2020-2024)
- Tribute (2001-2011), B-Series (1999-2009), 626 (1998-2002) (not part of the main compatibility guide)
Not compatible models (as listed)
- Mazda2
- Mazda5
- Mazda CX-7
- Mazda Millenia
- Mazda MPV
- Mazda Protegé
- Mazda RX-8
How to replace a Mazda smart remote battery (DIY overview)
The replacement process is designed to be quick. The listing’s approach is:
- Remove the mechanical key using the auxiliary button on the back of the fob.
- Open the key fob casing by prying at the side slot carefully with a flat tool (paperclip, coin, or similar).
- Swap the CR2032 battery, placing it with the correct orientation (positive side facing up).
- Snap the halves back together, reinsert the mechanical key, and test the fob.
If your key fob has been giving low-battery alerts, replacing the battery is the simplest first step before considering dealer service.
Pros and cons for real buyers
Pros
- Good for multi-fob situations: the pack size (two batteries) makes it easier to address more than one key at a time.
- DIY-friendly: buyers describe the installation as not too hard.
- Fits the intended Mazdas: review themes suggest correct fitment for the supported fobs.
- Designed for compatibility: it targets specific Mazda smart remote styles, rather than relying on guesswork.
Cons
- Fitment is the make-or-break factor: if your remote type does not match the supported style, the battery may not be the correct solution even if it is physically a CR2032.
- Exclusions exist: some Mazda models are explicitly listed as not compatible.
- No key fob included: this is batteries only.
Who should buy these batteries
- You own a compatible Mazda smart remote that uses a CR2032 (3V) battery.
- You want a simple DIY replacement to resolve low battery behavior or warnings.
- You prefer having a spare battery on hand (two-pack).
- You are trying to avoid dealer battery replacement service for a routine swap.
Who should avoid them
- If your Mazda model is listed as not compatible with this specific smart remote battery setup.
- If you cannot confirm your remote matches the supported fob style using the picture/fitment guide.
- If you are shopping for a complete key fob replacement, since this listing provides batteries only.
Is it worth it?
These batteries are a practical buy when you have a confirmed Mazda smart remote that matches the supported models and fob style. The two-pack is especially convenient if more than one key is starting to show low-battery symptoms. The only real risk is ordering without confirming compatibility, so treat the fitment guide as essential.
FAQ
What type of battery do these Mazda key fobs use?
They are CR2032 batteries rated at 3V, sold as a pack of two.
Do I need to program the key fob after replacing the battery?
No programming is required for this battery replacement.
How can I confirm compatibility for my Mazda smart remote?
Use the fitment/picture guide and match your key fob’s style, especially noting the remote layout (the listing targets smart remotes with buttons on the side of the fob).
Does the pack include the key fob?
No. It includes batteries only, not the key fob itself.
Which Mazda models are not compatible?
The listing includes exclusions such as Mazda2, Mazda5, Mazda CX-7, Mazda Millenia, Mazda MPV, Mazda Protegé, and Mazda RX-8.
Is this a good option if I have two key fobs?
Yes, the pack includes two batteries, which can cover two remotes at once.
Specifications
| Product Title | Key Fob Replacement Batteries for Mazda (2019-2025) 3 6 CX-5 CX-30 CX-9 CX-50 CX-90 CX-3 CX-70 MX-5 Miata (Pack of 2) Smart Remote (Check Fitment Guide) |
|---|---|
| Category | Automotive > Interior Accessories > Anti-Theft > Accessories |
| Brand | Deluxe Batteries |
| Manufacturer | Deluxe Batteries |
| Model Name | Key Fob Battery Replacement for Mazda |
| Model Number | Deluxe Key Fob Replacement Batteries |
| Number of Batteries | 2 Nonstandard Battery batteries required. |
| Built-In Media | (2) Original Deluxe CR2032 Key Fob Replacement Batteries for Mazda Smart Remote |
| Battery Capacity | 3 Volts |
| Voltage | 3 Volts |
| Reusability | Single Use |
| Compatible Phone Models | Mazda (2019-2025) 3 6 CX-5 CX-30 CX-9 CX-50 CX-90 CX-3 CX-70 MX-5 Miata |
| Unit Count | 2.0 Count |
| Antenna Location | Premium Car Key Fob Battery Replacement OEM |
| Battery Cell Type | Lithium Ion |
| Battery Cell Composition | Lithium Ion |
| Recommended Uses For Product | Premium Car Key Fob Battery Replacement OEM |
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