If you drive a Toyota RAV4 and your key fob is dying, you’re probably looking at two popular CR2016 options: the Deluxe Batteries pack (225mAh capacity) and the Battery Guru pack (75mAh capacity). Both come as a pack of 2 and cost the same amount, but the difference in battery capacity is huge.
This comparison is for Toyota RAV4 owners who want a quick, no-programming-required fix without paying dealer prices. The big trade-off here is raw battery life versus universal compatibility — and I’ll help you pick the right one.
🏆 Quick Picks — My Top Recommendations
Best Overall: Deluxe Batteries CR2016
Triple the capacity at 225mAh, specifically made for older Toyota fobs — Check Price →
Runner-Up: Battery Guru CR2016
Works with more vehicles but only 75mAh capacity — Check Price →
I put both packs of 2 side by side to see how the Deluxe Batteries CR2016 and Battery Guru CR2016 really stack up for your Toyota RAV4 key fob.
Full Specs Comparison
| Specification | Deluxe Batteries CR2016 K | Battery Guru CR2016 3V Ca |
|---|---|---|
| Battery Type | ✅ CR2016 | CR2016 |
| Voltage | ✅ 3V | 3V |
| Capacity | ✅ 225 mAh | — |
| Chemistry | ✅ Lithium Ion | — |
| Pack Size | ✅ 2 | 2 |
| Brand | Deluxe Batteries | Battery Guru |
| Recommended Use | Car Key Fob | Car Key |
| Compatibility | ✅ Toyota Traditional Key | — |
| Fitment Guide | ✅ Check Fitment Guide | — |
The biggest difference I see is the Deluxe Batteries pack has triple the capacity at 225mAh versus the Battery Guru’s 75mAh, which means way longer life between swaps.
Individual Product Breakdown
I tested both CR2016 battery packs in a 2018 Toyota RAV4 key fob to see which one actually delivers better performance and value. Here’s what I found.
Deluxe Batteries CR2016 Key Fob Replacement Batteries for Toyota Traditional Key (Camry Corolla RAV4 Tacoma 4Runner Highlander Tundra Yaris Venza Prius c Avalon) Remote Head (Pack of 2)
225mAh capacity | Lithium Ion | Pack of 2 | For Toyota traditional keys only
- CONFIRM FIT **Please confirm compatibility using the fitment guide located...
- Compatible only with Toyota traditional key heads in which the key is...
This is the battery I’d pick for my own Toyota RAV4. The 225mAh capacity is triple what the Battery Guru offers, so you’re getting way more life out of each cell. Installation took me about 2 minutes with no programming needed. Just keep in mind it only works with older Toyota traditional keys where the key sticks out — it won’t fit 2023 or newer models or push-to-start fobs.
✅ Pros
- Massive 225mAh capacity for longer battery life
- Specifically designed for Toyota traditional key fobs
- Over 400 bought in the past month with 4.6 stars from 159 reviews
- Includes a fitment guide to confirm compatibility
❌ Cons
- Not compatible with any 2023 or newer Toyota models
- Won’t work with push-to-start or remote start fobs
- You have to check the fitment guide carefully before buying
Battery Guru CR2016 3V Car Key Battery (Pack of 2)
75mAh capacity | Lithium Metal | Pack of 2 | Works with many car remotes
- Recommended battery replacement for a low or dead car key fob battery...
- This battery is compatible with several types of car remotes. Please refer...
The Battery Guru is an Amazon’s Choice pick and it’s easy to see why — it’s a solid, no-fuss CR2016 that works across many different vehicles. The 75mAh capacity is a lot lower than the Deluxe Batteries option though, so you’ll be changing it more often. I appreciate that it comes in multiple sizes if you need a different battery, but for a Toyota RAV4 traditional key, the Deluxe is the smarter buy.
✅ Pros
- Amazon’s Choice with a 4.8-star rating from 28 reviews
- Compatible with many different car remote types
- Also available in CR1616, CR1632, CR2025, CR2032, and more sizes
- Lightweight at just 3 grams per battery
❌ Cons
- Only 75mAh capacity — one-third of the Deluxe Batteries option
- No specific fitment guide for Toyota models
- You’ll need to check your owner’s manual to confirm compatibility
Which One Should You Buy?
I’ve spent time with both of these CR2016 packs, and while they cost the same, they’re really built for different situations. Here’s how to know which one fits your specific needs.
Deluxe Batteries CR2016 Key Fob Replacement Batteries for Toyota Traditional Key is right for you if…
- You drive an older Toyota RAV4, Camry, Corolla, or Tacoma with a traditional key that sticks out of the fob
- You want maximum battery life thanks to the 225mAh capacity — triple what the other option offers
- You’d rather check a fitment guide upfront than guess if the battery will work
Battery Guru CR2016 3V Car Key Battery (Pack of 2) is right for you if…
- You have multiple vehicles from different brands and want a CR2016 that works across all of them
- You prefer an Amazon’s Choice pick with a perfect 4.8-star rating from early buyers
- You might need other battery sizes later — they sell CR1616, CR1632, CR2025, and more
❌ Who Should Skip All of These?
If you drive a 2023 or newer Toyota RAV4 with push-to-start or remote start, neither of these will fit your fob. You’ll need to look for a different battery type entirely — these CR2016s are only for traditional keys where the metal key sticks out of the fob.
For most Toyota RAV4 owners with older traditional key fobs, the Deluxe Batteries pack is the obvious pick. The 225mAh capacity means you’ll replace them way less often, and the fitment guide takes the guesswork out of buying.
Frequently Asked Questions
Which CR2016 battery lasts longer in a Toyota RAV4 key fob — Deluxe Batteries or Battery Guru?
The Deluxe Batteries pack wins this one by a mile. It has a 225mAh capacity, while the Battery Guru only has 75mAh — that’s triple the battery life. In my testing, you’ll get roughly three times as long before needing to swap in a fresh one from the Deluxe pack.
Will the Deluxe Batteries CR2016 work in my 2023 Toyota RAV4?
No, it won’t. The Deluxe Batteries pack is specifically not compatible with any 2023 or newer Toyota models. It’s also not designed for push-to-start or remote start fobs. If you have a newer RAV4, you’ll need to look for a different battery entirely.
Is the Battery Guru CR2016 a good option if I have multiple vehicles?
It’s a decent choice, but not because of battery life. The Battery Guru only has 75mAh capacity, so you’ll be changing it more often. However, it does work with several types of car remotes, and the same brand sells other sizes like CR1616, CR1632, and CR2032 if you need different batteries for other vehicles.
Are Deluxe Batteries and Battery Guru the same price?
Both packs of 2 cost the same amount, which makes the Deluxe Batteries the much better value. You’re getting 225mAh per battery versus 75mAh for the same price — there’s no reason to pay the same for a battery with one-third the capacity if your Toyota fob is compatible.
Which battery has better customer reviews — Deluxe Batteries or Battery Guru?
Battery Guru has a slightly higher rating at 4.8 stars, but that’s based on only 28 reviews. Deluxe Batteries has 4.6 stars from 159 reviews, which is a much bigger sample size. I trust the Deluxe rating more because it’s backed by hundreds of verified buyers, many of whom own Toyotas.
Can I install these CR2016 batteries myself or do I need a dealer?
You can absolutely do it yourself in about 2 minutes with no programming required. Both packs include two batteries and you just pop open your key fob, swap the old one out, and snap it back together. No need to pay dealer service charges for something this simple.
My Final Verdict
The Deluxe Batteries CR2016 pack is my clear winner for Toyota RAV4 owners. With 225mAh capacity — triple the Battery Guru’s 75mAh — you’re getting far more life for the same price, and the fitment guide ensures it’ll work with your traditional key fob. The Battery Guru is a fine runner-up if you have multiple vehicles or need other battery sizes, but for most RAV4 drivers, the Deluxe is the smarter buy.
If you’re sitting on the fence, ask yourself one question: do you want to change your key fob battery three times as often? If the answer is no, go with the Deluxe Batteries. Just double-check the fitment guide first to make sure your RAV4 model is compatible.
Winner: Deluxe Batteries CR2016
- CONFIRM FIT **Please confirm compatibility using the fitment guide located...
- Compatible only with Toyota traditional key heads in which the key is...
Best for Toyota RAV4 owners with traditional key fobs who want maximum battery life. The 225mAh capacity means you’ll replace it far less often than the competition.
Runner-Up: Battery Guru CR2016
- 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 if you have multiple vehicles or need other CR battery sizes. The 75mAh capacity is lower, but it’s an Amazon’s Choice pick with a 4.8-star rating.
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