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Your car refuses to open up when your hands are full in a grocery-store parking lot. The fix is a single coin cell inside your key fob, and replacing it takes about sixty seconds once you know which one fits your 2008 Altima. This guide names the real-world picks that work for your specific year and model, so you skip the Amazon guesswork and the dealership markup.
I’m Min Islam — the founder and writer behind Trending Car. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Every option here is a genuine CR2032 3-volt lithium coin cell — the exact power source your 2008 Nissan Altima smart key fob requires. Each review reflects real owner experiences to find you the 08 nissan altima key fob battery that keeps you from being stranded.
Our Picks at a Glance
How To Choose The Best 08 Nissan Altima Key Fob Battery
Your 2008 Altima smart key fob uses a single CR2032 3-volt lithium coin cell. The variation between products depends on brand reliability, unit count, included tools, and whether the battery holds up for more than a few months of daily use.
Brand Trust and Storage Life
A battery from a known brand like Duracell or Philips typically sits on the shelf for years without losing power — both guarantee up to ten years in storage. For the 2008 Altima fob, which you may use for several more years, a battery that holds its charge in the package is just as important as the one inside your remote today.
Unit Count and Convenience
You only need one CR2032 for your Altima key fob at a time. A 2-pack covers you and a spare, while the 6-pack or 12-pack makes sense if you also have AirTags, kitchen scales, or other gadgets that use the same coin cell. Choose the count that matches how many devices you actually own.
Included Tools for DIY Replacement
Some dedicated key fob battery packs include a small pry tool that helps you open the remote without scratching the plastic. If you do not already own a thin plastic spudger, look for a kit that includes one — it makes the job genuinely easier.
Quick Comparison
| Model | Best For | Unit Count | Battery Capacity | Weight | Amazon |
|---|---|---|---|---|---|
| Duracell 2032 Lithium Battery, 6 Count★ Best Overall | Long-term household stock | 6.0 Count | 3 Volts | 27.22 g | Amazon |
| Lucrum Key Fob Battery for Nissan (2007-2025)Nissan Matched | Nissan-specific two-pack | 2.0 Count | 240 Milliamp Hours | 3 Grams | Amazon |
| RemoteOverstock CR2032 2 Pack + Pry Tool | DIY first-timers | 2.0 Count | 3 Volts | 3 Grams | Amazon |
| PHILIPS CR2032 Batteries 12 Pack | Bulk multi-device value | 12.0 Count | 240 Milliamp Hours | 1.6 oz | Amazon |
| Key Battery Outlet CR2032 (2 Pack) | Universal car fob backup | 2.0 Count | 3 Volts | — | Amazon |
| Key Fob Batteries for Nissan (2-Pack) | Nissan & Infiniti coverage | 2.0 Count | 3 Volts | 2.9 Grams | Amazon |
| Battery Guru for Nissan Altima (2007-2023) | Exact Altima year match | 2.0 Count | 3 Volts | 3 Grams | Amazon |
In‑Depth Reviews
1. Duracell 2032 Lithium Battery, 6 Count (Pack of 1)
Our pick — over 4.5★ from 49,000+ verified ratings; the strongest balance of quality and price.
The household staple that covers your Altima fob and everything else with one reliable order.
You get long-lasting power you can count on — this Duracell lithium coin CR2032 delivers 3 volts from a brand buyers have trusted for decades. Reviewers consistently mention they last over a year in daily use, and the 6-count pack means you have spares for your key fob, kitchen scale, and a few AirTags without reordering.
The child-secure packaging requires scissors to open, which is a deliberate safety feature. The bitter coating on each cell discourages accidental swallowing — a spec that matters if you have small kids around. Duracell also backs these with a guarantee for 10 years in storage, so the spares you stow away will still hold a charge when your 2008 Altima fob inevitably needs another swap years from now.
Compared to the Lucrum 2-pack, the Duracell 6-count gives you triple the batteries for roughly the same price tier, making it the smarter buy if you use CR2032 cells in other gadgets around the house.
Why you want it
- 10-year storage guarantee means the spares you buy today will still be fresh years later
- Child-safety packaging and bitter coating reduce swallowing risk around little ones
- 6-count pack covers your Altima fob plus AirTags, remotes, and scales
The honest trade-off
- No pry tool included — you will need a small screwdriver or spudger to open the fob
- Overkill if you only need one battery for a single key fob and nothing else
Reach for this if: you want one trusted-brand 6-pack that works for your Altima fob, your AirTags, and everything else in the drawer.
Look elsewhere if: you only need a single battery for a single fob right now and would rather not store extras.
2. Lucrum Key Fob Battery Replacement for Nissan & Infiniti (2007-2025) 2PCs
A Nissan-specific 2-pack that claims 240mAh capacity but has one quality hitch.
This pack is built around a 240 Milliamp Hours capacity CR2032, which is the exact type your 2008 Altima fob needs. Lucrum lists precise compatibility with Altima model years 2007-2024, so you can be confident the fit is right for your 2008. Each battery weighs just 3 Grams, and the two-pack gives you one to install and one to stash in the glove box.
Buyers report that these work great for Nissan Altima fobs across several model years, with one 2021 Altima owner saying the battery worked perfectly. However, there is a notable quality issue in the reviews: one reviewer noted that one of the two batteries died within just two months, even though they do not use their car daily. This suggests the Lucrum pack may have occasional batch inconsistency despite the specific Nissan targeting.
Compared to the Duracell 6-pack above, the Lucrum 2.0 Count is a much smaller quantity — a 6.0x gap in unit count — for a similar price, so you are paying more per battery in exchange for that Nissan-specific labeling.
What stands out
- Exact year compatibility listed (2007-2024 Altima) so no guesswork
- 240mAh capacity is the standard spec your fob expects
- Weighs only 3 grams, identical to OEM fob batteries
What gives us pause
- At least one buyer mentioned a battery dying after two months
- 2-pack costs nearly the same as a 6-pack from Duracell, making it pricey per cell
Grab it for: the convenience of a battery already verified for your Altima model year range straight from the listing.
skip it if: you prefer the reliability record of a bigger brand like Duracell, especially since the price per battery is higher here.
3. RemoteOverstock CR2032 2 Pack + Pry Tool for Nissan (2007-2022+)
The kit that hands you everything to open, swap, and close your Altima fob in one go.
RemoteOverstock bundles two CR2032 batteries with a dual-purpose opening tool that helps you pry the fob halves apart without scratching the plastic case, and also nudges the old battery out of its seat. That tool is the unsung hero here — many buyers mention that the pry tool alone saves frustration, especially if you have never opened a smart key fob before. A step-by-step installation video is linked on the packaging, so you can watch the exact procedure for your 2008 Altima before touching the fob.
The batteries themselves are listed as original OEM-equivalent cells used in all smart key remotes. Reviewers confirm the fit is exact for Nissan models like the Versa and Altima, with one 5-star review saying the installation took about a minute and was well-packaged. Unlike the Lucrum pack above, there are no reports of premature battery failure in the reviews.
Compared to the Battery Guru pack below, which covers Altima only through 2023, this RemoteOverstock kit includes the specific pry tool that the Battery Guru pack does not mention, making it the better pick if you are doing this for the first time.
What makes this different
- Includes a pry tool so you do not scratch your fob case opening it
- Video guide walks you through the exact replacement steps
- OEM-equivalent batteries matched to factory smart-key specs
What to keep in mind
- Year coverage listed up to 2022+, so double-check if your specific 2008 falls within the listed FCC IDs
- 2-pack only, so you will need to reorder after the spare is used
Who this fits: anyone who has never replaced a key fob battery and wants a tool, a guide, and the right cell all in one box.
Who might pass: buyers who already own a pry tool and just want a bulk 6-pack or 12-pack of bare batteries for less per cell.
4. PHILIPS CR2032 Batteries 12 Pack
The 12-pack that seasons your drawer with a decade of spare power for under ten bucks.
Philips brings a 12.0 Count of CR2032 batteries, each holding 240 Milliamp Hours of capacity, which is the same spec your 2008 Altima fob needs. The headline feature is the 10-year storage life — you can set these aside and they will still be fresh when your current battery eventually gives out years from now. Philips also claims up to 70% more power than standard coin cells, though this is measured against unspecified baseline cells; the practical takeaway is that each battery is built to deliver consistent voltage.
The 12-pack covers your Altima fob for many future swaps, plus AirTags, garage remotes, and any other CR2032-powered gadget you own. Owners mention these work well with Apple Find My devices, sometimes better than Duracell for that specific use case. The batteries are rated to function from -20° to +30°, so they will handle temperature extremes in a parked car or a cold garage.
Compared to the Duracell 6-pack, the Philips 12-pack doubles your battery count at a similar price tier, making it the better value if you have multiple devices. However, the Philips packaging does not have the same child-security features as Duracell’s bitter-coating and hard-to-open blister pack.
Why this stands out
- 12 batteries for a price similar to a 6-pack from other brands, excellent bulk value
- 10-year storage guarantee so spares stay ready for years
- Works in extreme temps from -20° to +30°
What is missing
- No child-safety packaging or bitter coating like Duracell offers
- You get 12 batteries, which is far more than a single-key-fob household will ever need
Ideal for: households with multiple CR2032 gadgets — AirTags, remotes, scales, and your Altima fob — that want to buy once and forget for a year.
Not ideal if: you have small children at home and prefer the extra child-security packaging features of the Duracell pack.
5. Key Battery Outlet CR2032 Key Fob Battery Replacement (2 Pack)
A 2-pack engineered for consistent output, with a 4.8 rating from nearly 300 buyers.
This pack from Key Battery Outlet delivers two CR2032 3-volt lithium cells sourced from the same manufacturer that supplies OEM fob batteries for major car brands. The claim is consistent power in hot, cold, and high-usage conditions — and the 4.8 out of 5 rating across 286 reviews suggests the real-world performance backs it up. A detailed video guide is included, and you do not need any programming skills to swap the battery in your 2008 Altima fob.
Customers note excellent fit across multiple brands: one owner used it in a 2023 Chrysler Voyager fob and noted restored range and reliable response, while another confirmed it worked perfectly for a 2018 Ford Fusion. The 90-day manufacturer warranty gives you a short safety net if a cell turns out to be defective. The batteries are not Nissan-specific, but the CR2032 form factor and voltage are universal.
Compared to the RemoteOverstock pack, this one does not include a pry tool, but it does carry a higher average rating (4.8 vs 4.6) and the same video-guide benefit. If you already own a pry tool, this is the more trusted battery choice for the same 2-pack format.
The strong points
- 4.8 average rating from 286 reviews signals high buyer satisfaction
- Sourced from the same OEM manufacturer used by major car brands
- 90-day warranty provides basic defect protection
The small downsides
- No pry tool included for opening the fob
- 2-pack only, so you will need to remember where you stored the spare
Pick this when: you value a top-rated brand-agnostic 2-pack with OEM-level quality and do not need a pry tool.
Skip this when: you prefer a kit that includes the opening tool so you do not have to search for one.
6. Key Fob Batteries for Nissan (2-Pack) by Key Battery Outlet
A Nissan-specific 2-pack with a pry tool and video guide, sourced from OEM-grade cells.
This 2-pack from Key Battery Outlet is explicitly designed for Nissan and Infiniti fobs, with a compatibility list that includes Altima, Sentra, Versa, Rogue, Pathfinder, and nearly every other Nissan model through the 2020s. Each battery weighs 2.9 Grams and delivers 3 Volts, matching the exact spec your 2008 Altima fob needs. The pack also includes a small pry tool that reviewers point out helps open the fob without damage.
Shoppers say the video guide makes the replacement simple even for non-tech-savvy owners, and several mention the tool was included in the packaging. One owner reported the battery works well in negative-degree weather — useful if you park outside during cold winters. The OEM-quality sourcing from the same manufacturers used by the original brand gives you a level of confidence in fit and voltage consistency.
Compared to the Battery Guru pack below, which lists only Altima year ranges without mentioning a pry tool, this Key Battery Outlet pack includes the tool and covers a broader Nissan lineup, making it the more versatile choice if your household has more than one Nissan vehicle.
What works well
- Includes a pry tool so you can open the fob immediately
- Covers Nissan and Infiniti models from Altima to GT-R
- 90-day warranty and OEM-quality sourcing for reliable voltage
What to note
- Only 2 batteries — you will need to reorder once both are used
- Slightly lower average rating (4.7) compared to the 4.8 of the universal Key Battery Outlet pack
Best for: Nissan owners who want a battery matched to their car brand, a pry tool, and a video guide all in one order.
Not for: buyers who already have a pry tool and prefer a larger pack count to cover other household devices.
7. Battery Guru Key Fob Battery Replacement for Nissan Altima (2007-2023) Pack of 2
A no-nonsense Altima-only 2-pack from Battery Guru that skips the extras and gets the job done.
This pack is laser-focused on the Nissan Altima with model years 2007-2023, so your 2008 is squarely in the compatibility window. You get two CR2032 3V lithium cells, each weighing 3 Grams, in a straightforward blister pack. There is no pry tool and no video guide — just the batteries, your key fob, and a few minutes of your time. The smart key fob itself is not included, but Battery Guru makes that clear in the listing to avoid confusion.
Buyers report these work well across Altima years: one owner with a 2014 Nissan Rogue confirmed the batteries worked beautifully and were among the cheapest options, while a 2012 Altima owner said the replacement fixed their key fob instantly. The 4.4 average rating from 441 reviews is solid, though a few notches below the top performers in this guide. The 3.5 x 2 x 0.1 inch item dimensions are compact for storage.
Compared to the RemoteOverstock pack, this Battery Guru pack covers Altima through 2023 rather than 2022+, but it drops the pry tool and video guide. If you have already replaced your fob battery before, you probably do not need those extras anyway.
The simple virtues
- Explicitly listed for Altima 2007-2023, so zero fit doubt for your 2008
- 2-pack gives you one battery and one emergency spare
- Affordable option with over 440 reviews backing general reliability
The compromises
- No pry tool included — you will need a thin screwdriver or a coin
- Altima-only compatibility, so no use if you also own a different Nissan model
A good match if: you only need a 2008 Altima fob battery and have a pry tool at home already.
Probably not for: first-time fob openers who would benefit from a kit with a tool and video instructions.
Understanding the Specs
CR2032 — The Only Battery Your Altima Fob Accepts
The “CR” stands for a lithium manganese dioxide chemistry that delivers a stable 3 volts until the battery is nearly drained. The “2032” describes the physical size: 20mm diameter and 3.2mm thickness. Your 2008 Altima smart key fob was designed specifically around this form factor, so any CR2032 from any reputable brand will physically fit and electrically work.
mAh Capacity — How Long It Lasts
Milliamp-hours (mAh) tell you the total energy the battery holds. A standard CR2032 offers roughly 220-240mAh. A battery with 240mAh capacity, like the Lucrum or Philips options here, holds slightly more energy than a generic 220mAh cell, which can translate into a few extra weeks or months of fob operation before you need to swap again.
FAQ
Will any CR2032 battery work in my 2008 Nissan Altima key fob?
How do I open my 2008 Nissan Altima key fob without damaging it?
How long should a CR2032 battery last in an Altima key fob?
Do I need to reprogram my key fob after replacing the battery?
What is the difference between CR2016, CR2025, and CR2032?
Why do some of these packs include a pry tool and others do not?
How many CR2032 batteries does my 2008 Altima fob actually use?
Can extreme cold or heat damage the battery inside my Altima fob?
Final Thoughts: The Verdict
For most owners, the 08 nissan altima key fob battery winner is the Duracell 2032 6-Pack because the brand’s 10-year storage guarantee, child-safety features, and long battery life in active use cover every need from your fob to your household gadgets without requiring a reorder for years. If you want a complete kit with the pry tool and video guide, grab the RemoteOverstock CR2032 2-Pack. And for bulk buyers who power AirTags and remotes alongside their Altima fob, the standout is the PHILIPS 12-Pack for sheer battery count at a similar price.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Trending Car earns from qualifying purchases. This does not affect which products we feature.