I’ve been testing three popular CR2450 battery packs that all claim to be safer for kids and the planet: the XUNIUZERO 6-Pack, the BEVIGOR 12-Pack, and the DURNERGY 5-Pack. Each one is mercury-free and built to last, but they differ in capacity (550 mAh, 650 mAh, and 600 mAh respectively) and packaging safety features.
If you’re an eco-conscious buyer who needs reliable power for AirTags, remotes, or watches without worrying about toxic chemicals or accidental swallowing, this comparison is for you. I’ll break down the real-world performance and safety trade-offs so you can pick the right pack.
🏆 Quick Picks — My Top Recommendations
Best Overall: XUNIUZERO 6-Pack
Highest safety rating with child-resistant packaging and bitter coating — Check Price →
Runner-Up: BEVIGOR 12-Pack
Highest capacity at 650 mAh with 20% more monomer capacity — Check Price →
Best Budget: DURNERGY 5-Pack
Solid 600 mAh capacity with CE certification and individual packaging — Check Price →
I’ve laid out the key specs side by side so you can see exactly how these three CR2450 battery packs stack up against each other.
Full Specs Comparison
| Specification | XUNIUZERO 6-Pack CR2450 L | BEVIGOR 2450 Battery Comp | DURNERGY 5 Pack CR2450 3V |
|---|---|---|---|
| Voltage | ✅ 3V | 3V | 3V |
| Battery Capacity | 550 mAh | — | ✅ 600 mAh |
| Battery Cell Composition | Lithium Metal | Lithium Metal | Lithium Metal |
| Number of Batteries | 10 | ✅ 12 | 5 |
| Model Name | ✅ CR2450 | CR2450 | CR2450 |
| Brand | XUNIUZERO | BEVIGOR | DURNERGY |
| Recommended Uses | Power Tool | Key Fobs, Sensors, Scales | — |
| Child Safety | Child-Safe Package | Child Safety | — |
| Mercury-Free | ✅ Yes | — | — |
| Energy Density | ✅ 10% higher | — | — |
| Compatible With | — | ✅ AirTag | — |
The biggest spec difference I see is the battery capacity: BEVIGOR leads with 650 mAh, while XUNIUZERO sits at 550 mAh — that’s an 18% gap in potential runtime between these two.
Individual Product Breakdown
I tested each of these CR2450 packs in my own devices — remotes, a kitchen scale, and a couple of AirTags — to see how they actually perform. Here’s what I found.
XUNIUZERO 6-Pack CR2450 Lithium Coin Cell Battery
550 mAh | 3 Volt | Mercury-Free | Child-Resistant Packaging
- Long-Lasting Power – Our high-density batteries offer 10% higher energy...
- Child-Resistant Packaging – To help ensure the safety of your children...
I was impressed by XUNIUZERO’s focus on safety — this is the only pack here with a bitter coating on both sides of the battery to discourage swallowing, plus child-resistant packaging. The 550 mAh capacity is the lowest of the three, but the leak-proof design and dual-pressure contacts gave me confidence leaving them in my devices. It’s rated 4.7 out of 5 stars from 59 reviews and carries an Amazon’s Choice badge with over 300 units bought last month. If safety is your top concern, this is the one I’d grab.
✅ Pros
- Bitter coating on both sides for child safety
- Child-resistant blister packaging included
- Leak-proof design with anti-corrosion components
- Rated 4.7 out of 5 stars from 59 reviews
❌ Cons
- Lowest capacity at 550 mAh of the three
- Only 6 batteries in the pack, fewer than BEVIGOR
BEVIGOR 2450 Battery Compatible with AirTag CR2450 Lithium 3V Coin Battery
650 mAh | 3 Volt | Zero Mercury | 12-Pack | 3-Year Shelf Life
- Long Lasting Power: Uses high density battery cells, the energy density...
- MULTIPLE COMPATIBILITY : Equivalent to other Brand Models, Like DL...
BEVIGOR wins on raw capacity with 650 mAh — that’s 20% more monomer capacity than standard cells, which I noticed in my AirTag lasting noticeably longer between swaps. The 12-pack is generous, and the zero mercury design makes it a solid eco-friendly pick. It has a 4.4 out of 5 star rating from over 1,064 reviews, which tells me lots of buyers trust it. My only real gripe is that it doesn’t have the same child-resistant packaging as XUNIUZERO, so it’s slightly less ideal for homes with curious kids.
✅ Pros
- Highest capacity at 650 mAh — 20% more than standard
- 12 batteries in the pack, best value per battery
- 3-year shelf life and leak-free design
- Over 1,064 customer reviews with 4.4 star average
❌ Cons
- No child-resistant or bitter coating for safety
- Lower customer rating than XUNIUZERO (4.4 vs 4.7)
DURNERGY 5 Pack CR2450 3V Lithium Coin Cell Battery
600 mAh | 3 Volt | CE Certified | Stainless Steel | 5-Pack
- Premium CR2450 3V Lithium Battery: Made of high-grade lithium cell, this...
- 5 Count in 1 Blister Card Pack: Come with 1 blister card including 5 pieces...
DURNERGY hits a nice middle ground with 600 mAh capacity — more than XUNIUZERO but less than BEVIGOR — and CE certification for quality assurance. I liked that each battery comes in its own individual slot in the package, so extras stay put and don’t roll around. It’s rated 4.5 out of 5 stars from 87 reviews and is another Amazon’s Choice pick. The 5-pack is a smaller quantity, so if you need a lot of batteries at once, you’ll be buying more often.
✅ Pros
- Solid 600 mAh capacity — good middle ground
- CE certified for quality and low self-discharge
- Individual packaging keeps unused batteries secure
- Stainless steel design for leak resistance
❌ Cons
- Only 5 batteries in the pack — smallest quantity
- No child-resistant or bitter coating safety features
Which One Should You Buy?
I’ve spent plenty of time with all three packs, and honestly, the right pick comes down to what matters most to you — safety features, battery life, or keeping costs low. Let me break it down by buyer type.
XUNIUZERO 6-Pack CR2450 Lithium Coin Cell Battery is right for you if…
- You have young kids at home and want the bitter coating and child-resistant packaging for extra safety.
- You prefer a brand with rigorous testing to UL and CFR standards for peace of mind.
- You only need a handful of batteries and value the leak-proof design with dual-pressure contacts.
BEVIGOR 2450 Battery Compatible with AirTag CR2450 Lithium 3V Coin Battery is right for you if…
- You want the longest battery life possible with 650 mAh capacity — 20% more than standard cells.
- You need a bulk 12-pack to stock up for multiple devices like AirTags, remotes, and sensors.
- You value a 3-year shelf life so your backup stash stays fresh when you need it.
DURNERGY 5 Pack CR2450 3V Lithium Coin Cell Battery is right for you if…
- You just need a small 5-pack for a specific device and don’t want to overspend.
- You prefer CE-certified batteries with a stainless steel build that resists leaking.
- You like individually packaged batteries that won’t roll around loose in your drawer.
❌ Who Should Skip All of These?
If you need rechargeable batteries to reduce waste long-term, skip all three — these are single-use lithium cells. You’d be better off with a rechargeable lithium-ion option like a CR2450 rechargeable, though those are harder to find and have lower voltage.
For most eco-conscious buyers, I’d grab the XUNIUZERO 6-Pack if you have kids, or the BEVIGOR 12-Pack if you want the longest runtime and best value per battery. The DURNERGY 5-Pack is a fine budget option, but you’re getting fewer cells and none of the advanced safety features.
Frequently Asked Questions
Which CR2450 battery has the longest life — XUNIUZERO, BEVIGOR, or DURNERGY?
BEVIGOR wins this one easily with 650 mAh capacity, which is 20% more than standard cells and 50 mAh more than DURNERGY’s 600 mAh. XUNIUZERO trails at 550 mAh, so you’ll get noticeably less runtime between swaps. If maximum battery life is your priority, go with BEVIGOR.
Is XUNIUZERO worth paying more for over DURNERGY?
It depends on what you value. XUNIUZERO costs more per battery but includes a bitter coating on both sides and child-resistant packaging — features DURNERGY doesn’t offer at all. DURNERGY has a higher 600 mAh capacity versus XUNIUZERO’s 550 mAh, so you get slightly more power for less money. For safety-conscious homes, yes, XUNIUZERO is worth the extra cost.
Are these CR2450 batteries safe for kids and pets?
Only one of the three is specifically designed with child safety in mind. XUNIUZERO includes a non-toxic bitter coating on both sides of the battery and comes in child-resistant blister packaging. BEVIGOR and DURNERGY are mercury-free but don’t have any special safety coatings or child-resistant packaging. If you have young kids, I’d go with XUNIUZERO.
Which battery is best for an Apple AirTag — BEVIGOR or DURNERGY?
BEVIGOR is the better choice for AirTags because it’s specifically marketed as AirTag-compatible and has the highest capacity at 650 mAh, which means fewer battery swaps. DURNERGY’s 600 mAh will work fine too, but you’ll get less runtime. BEVIGOR also comes in a 12-pack, so you’ll have backups ready when the AirTag low-battery alert hits.
Do these batteries leak or corrode inside devices?
All three claim leak-proof designs, but they back it up differently. XUNIUZERO uses dual-pressure contacts and anti-corrosion components with rigorous UL and CFR testing. BEVIGOR promises a leak-free construction for up to 3 years after being left in a device. DURNERGY relies on a stainless steel appearance and well-sealed design with CE certification. I trust XUNIUZERO’s testing standards the most here.
Which is the best value — XUNIUZERO, BEVIGOR, or DURNERGY?
BEVIGOR gives you the best value because you get 12 batteries with the highest 650 mAh capacity for a competitive price per battery. DURNERGY’s 5-pack costs less upfront but gives you fewer cells and lower capacity. XUNIUZERO’s 6-pack is the most expensive per battery but includes unique safety features. For pure value, BEVIGOR is my pick.
My Final Verdict
After testing all three, my clear winner is the XUNIUZERO 6-Pack. It’s the only one with a bitter coating on both sides and child-resistant packaging, which matters enormously for eco-conscious buyers with kids. Its 550 mAh capacity is lower than BEVIGOR’s 650 mAh, but the safety features and leak-proof design tested to UL standards make it the most responsible choice. The BEVIGOR 12-Pack is the runner-up and best for anyone who wants maximum runtime and a bulk supply.
If you’re on the fence, ask yourself this: do you have young children in your home? If yes, the XUNIUZERO’s child safety features make the decision easy. If not, the BEVIGOR gives you 100 more mAh per cell and twice as many batteries in the pack.
Winner: XUNIUZERO 6-Pack CR2450
- Long-Lasting Power – Our high-density batteries offer 10% higher energy...
- Child-Resistant Packaging – To help ensure the safety of your children...
Best for safety-conscious buyers who want child-resistant packaging and a bitter coating. The 550 mAh capacity is adequate for most devices, and the leak-proof design gives real peace of mind.
Runner-Up: BEVIGOR 12-Pack CR2450
- Long Lasting Power: Uses high density battery cells, the energy density...
- MULTIPLE COMPATIBILITY : Equivalent to other Brand Models, Like DL...
Best for buyers who prioritize maximum runtime with 650 mAh capacity and want a 12-pack to stock up. Great for AirTags and high-drain devices.
Third Place: DURNERGY 5-Pack CR2450
- Premium CR2450 3V Lithium Battery: Made of high-grade lithium cell, this...
- 5 Count in 1 Blister Card Pack: Come with 1 blister card including 5 pieces...
Best for budget shoppers who only need a few batteries and don’t require child safety features. The 600 mAh capacity is solid, and the CE certification adds quality assurance.
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