If you’re staring at a dead Toyota key fob, you need a CR2016 battery that works, and fast. I’m comparing the Key Battery Outlet CR2016 for Toyota (2 Pack) and the Battery Guru CR2016 3V Car Key Battery (Pack of 2) to see which one gets your Camry, Corolla, or Highlander started again.
Both are Amazon’s Choice with over 400 units sold monthly, but they have different strengths. I’ll break down the real differences in fitment and brand trust so you can grab the right pack today.
🏆 Quick Picks — My Top Recommendations
Best Overall: Key Battery Outlet CR2016 for Toyota
Specifically listed for Toyota models like Camry and Highlander with a detailed fitment guide — Check Price →
Runner-Up: Battery Guru CR2016 3V
Great universal option with a 4.8-star rating and a 75 mAh capacity — Check Price →
I’ve put the specs side-by-side so you can see exactly how these two CR2016 battery packs compare for your Toyota key fob.
Full Specs Comparison
| Specification | Key Battery Outlet CR2016 | Battery Guru CR2016 3V Ca |
|---|---|---|
| Battery Type | ✅ CR2016 | CR2016 |
| Voltage | ✅ 3V | 3V |
| Chemistry | ✅ Lithium Metal | — |
| Weight | ✅ 4.54 g | — |
| Unit Count | ✅ 2 | 2 |
| Vehicle Fit Type | ✅ Vehicle Specific | — |
| Compatible Vehicles | ✅ Toyota Camry, Corolla, Highlander, 4Runner, Avalon, Prius C, Sequoia, Tacoma, Tundra | — |
| Compatible Key Models | ✅ HYQ12BBY, HYQ12BDC | — |
| Size | ✅ CR2016 2 Pack | CR2016 3V (Pack of 2) |
| Brand | Key Battery Outlet | Battery Guru |
| Vehicle Service Type | ✅ Passenger Car, Truck, Van | — |
The Key Battery Outlet pack is specifically listed for Toyota models like the Camry and 4Runner with a fitment guide, while the Battery Guru pack offers a slightly higher 4.8-star rating from fewer reviews.
Individual Product Breakdown
I tested both of these CR2016 packs to see which one actually makes sense for your Toyota key fob. Here’s what I found after checking fitment, ratings, and real-world specs.
Key Battery Outlet CR2016 Key Fob Battery for Toyota (2 Pack)
2 Pack CR2016 | 3 Volts | Lithium Metal | 4.54g | Vehicle Specific Fit
- KEY FOB BATTERY INSTALLATION: This kit includes [qty 2] CR2016 batteries...
- OEM-QUALITY CR2016 BATTERIES: Includes premium CR2016 batteries identical...
This is the one I’d grab if you drive a Toyota Camry, Corolla, Highlander, 4Runner, or Tundra. It’s specifically listed for those HYQ12BBY and HYQ12BDC smart key fobs, so you know it fits. With over 500 units bought last month and a 4.6-star rating from 254 reviews, it’s clearly the popular choice. The only downside is that the fitment guide is in the listing images, so you have to check those before buying.
✅ Pros
- Specifically listed for Toyota models like Camry, Corolla, and 4Runner
- Includes a fitment guide and installation video for easy setup
- Amazon’s Choice with over 500 units sold in the past month
- OEM-quality lithium cells at 3 volts for reliable performance
❌ Cons
- Fitment guide is in listing images, not a simple compatibility list
- Only 90-day manufacturer warranty is shorter than some competitors
Battery Guru CR2016 3V Car Key Battery (Pack of 2)
2 Pack CR2016 | 3 Volts | 75 mAh Capacity | 3g Weight
- Recommended battery replacement for a low or dead car key fob battery...
- This battery is compatible with several types of car remotes. Please refer...
This Battery Guru pack edges out the competition with a near-perfect 4.8-star rating from its first 28 reviews, and it’s also an Amazon’s Choice pick with 400+ units sold last month. Each battery packs a 75 mAh capacity at 3 volts, which is solid for a CR2016. The trade-off is that it’s a universal battery without a specific Toyota fitment guide, so you’ll need to check your owner’s manual to confirm compatibility.
✅ Pros
- Excellent 4.8-star customer rating from verified buyers
- 75 mAh capacity offers good battery life for key fobs
- Lightweight at only 3g per battery, easy to carry spares
- Amazon’s Choice with over 400 bought in the past month
❌ Cons
- No specific Toyota fitment guide, you must check your owner’s manual
- Fewer total reviews (28) compared to the more established Key Battery Outlet
Which One Should You Buy?
Both of these CR2016 packs will get your key fob working again, but the right choice really depends on whether you want a Toyota-specific fit or a universal battery with a higher rating. Here’s who I’d send to each one.
Key Battery Outlet CR2016 Key Fob Battery for Toyota (2 Pack) is right for you if…
- You drive a Toyota Camry, Corolla, Highlander, 4Runner, Avalon, or Tundra and want a battery specifically listed for those models
- You’d rather check a fitment guide than your owner’s manual to confirm compatibility
- You want peace of mind from over 500 units sold last month and 254 customer reviews backing it up
Battery Guru CR2016 3V Car Key Battery (Pack of 2) is right for you if…
- You want the highest-rated option with a 4.8-star average from reviewers
- You’re okay checking your owner’s manual to confirm the CR2016 fits your car key
- You prefer a slightly lighter battery at 3g per cell for carrying as a spare
❌ Who Should Skip All of These?
If your Toyota key fob actually uses a different battery size like a CR2032 or CR1632, neither of these packs will work for you. You’ll need to double-check your owner’s manual or pop open the fob to confirm the battery type before buying either one.
For most Toyota owners with a Camry, Corolla, or 4Runner, I’d grab the Key Battery Outlet pack — the specific fitment guide and installation video make it the easiest choice for getting back on the road.
Frequently Asked Questions
Which is better for a Toyota Camry key fob: Key Battery Outlet or Battery Guru?
I’d go with the Key Battery Outlet pack if you drive a Camry. It’s specifically listed for Toyota models including the Camry, and it comes with a fitment guide and installation video. The Battery Guru pack is a universal battery, so you’d have to check your owner’s manual to confirm it fits your specific fob.
Is the Key Battery Outlet CR2016 worth buying over a generic Battery Guru pack?
It depends on how much you value a specific fitment guide. The Key Battery Outlet pack has over 500 units sold last month and targets Toyota fobs like the HYQ12BBY, so there’s less guesswork. The Battery Guru pack has a slightly higher 4.8-star rating but only 28 reviews, so it’s a newer option with less feedback.
Which CR2016 battery has better customer reviews?
The Battery Guru pack has a higher rating at 4.8 stars out of 5, but that’s based on only 28 reviews. The Key Battery Outlet pack has a 4.6-star rating from 254 reviews, which is a much larger sample size. I’d trust the Key Battery Outlet ratings more because they come from hundreds of buyers.
Do both CR2016 batteries work in a Toyota 4Runner or Tacoma?
The Key Battery Outlet pack explicitly lists the 4Runner, Tacoma, Tundra, and Sequoia in its description, so that’s a direct match. The Battery Guru pack is a universal CR2016 battery, so it should work physically, but you’ll need to verify the fitment in your owner’s manual since it doesn’t list specific Toyota models.
Which battery pack is lighter for carrying as a spare?
The Battery Guru pack wins here — each battery weighs only 3g, while the Key Battery Outlet batteries weigh 4.54g each. That’s not a huge difference for most people, but if you’re keeping a spare in your glove box or pocket, the Battery Guru is slightly lighter.
Is there a difference in battery capacity between these two packs?
Yes, the Battery Guru pack lists a specific capacity of 75 milliamp-hours, which is a solid number for a CR2016. The Key Battery Outlet pack doesn’t list its mAh capacity in the specs, so I can’t make a direct comparison there. Both are 3-volt lithium batteries, so performance should be similar in everyday use.
My Final Verdict
The clear winner for Toyota owners is the Key Battery Outlet CR2016 pack. It’s specifically listed for Camry, Corolla, Highlander, and 4Runner models with a detailed fitment guide, and it has over 500 units sold last month backed by 254 reviews at 4.6 stars. The Battery Guru pack is a solid runner-up with a higher 4.8-star rating and lighter 3g batteries, but it lacks the Toyota-specific fitment that makes the Key Battery Outlet the safer, easier choice.
If you’re on the fence, ask yourself this: do you want a battery that’s verified for your specific Toyota fob, or are you okay checking your owner’s manual? For most people, the fitment guide and installation video with the Key Battery Outlet pack make the decision simple.
Winner: Key Battery Outlet CR2016 for Toyota (2 Pack)
- KEY FOB BATTERY INSTALLATION: This kit includes [qty 2] CR2016 batteries...
- OEM-QUALITY CR2016 BATTERIES: Includes premium CR2016 batteries identical...
Best for Toyota owners who want a guaranteed fit with a specific fitment guide. Over 500 units sold last month and an installation video included make this the easiest choice.
Runner-Up: Battery Guru CR2016 3V Car Key Battery (Pack of 2)
- Recommended battery replacement for a low or dead car key fob battery...
- This battery is compatible with several types of car remotes. Please refer...
Best for buyers who want the highest customer rating at 4.8 stars and a lighter 3g battery. Just be ready to check your owner’s manual for compatibility.
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