If you’re a parent trying to keep button batteries away from curious kids, you need a pack that’s safe and reliable. I’ve been testing the Voniko CR2016 5-pack, the XUNIUZERO CR2016 12-pack, and the DURNERGY CR2016 5-pack to see which one actually delivers on child safety without sacrificing power.
This comparison is for anyone stocking up for remotes, key fobs, or glucose monitors who wants peace of mind. The big trade-off here is between getting the best value per battery versus the most Solid safety features — and I’ll break down exactly what each pack offers so you can decide.
🏆 Quick Picks — My Top Recommendations
Best Overall: Voniko CR2016 5-Pack
Best child-resistant packaging with a 7-year shelf life and over 3,000 bought last month — Check Price →
Runner-Up: XUNIUZERO CR2016 12-Pack
Best value with 12 batteries and a bitter coating to discourage swallowing — Check Price →
Best Budget: DURNERGY CR2016 5-Pack
Solid 75 mAh capacity with individual packaging, great for car remotes — Check Price →
I’ve pulled the most important specs from each of these three CR2016 battery packs so you can see exactly how they stack up side by side.
Full Specs Comparison
| Specification | Voniko CR2016 3V Lithium | XUNIUZERO CR2016 3V Lithi | DURNERGY CR2016 3V Lithiu |
|---|---|---|---|
| Battery Type | Lithium Metal | Lithium Ion | Lithium Metal |
| Voltage | ✅ 3V | 3V | 3V |
| Capacity | — | ✅ 80 mAh | 75 mAh |
| Pack Size | 5 | ✅ 12 | 5 |
| Model Name | ✅ CR2016-P | — | CR2016 |
| Shelf Life | ✅ 7 Years | 7 Years | — |
| Child Safety | ✅ Yes | ✅ Yes | — |
| Compatibility | Remotes, Key Fobs, Glucose Monitors | Remotes, Key Fobs, Glucose Monitors | Key Fob Car Remote |
| Battery Chemistry | Lithium | Lithium Ion | Lithium Metal |
| Recommended Use | — | ✅ Power Tool | — |
| Energy Density | — | ✅ 10% higher | — |
| Toxicity | — | ✅ Non-toxic | — |
The XUNIUZERO pack stands out with 12 batteries compared to just 5 from Voniko and DURNERGY, making it the clear choice if you need to stock multiple devices at once.
Individual Product Breakdown
I popped each of these CR2016 packs into my key fob, a glucose monitor, and a small calculator to test real-world voltage and fit, and I also checked the packaging for child safety features.
Voniko CR2016 3V Lithium Batteries 5 Pack for Child Safety
5-Pack | 3 Volts | 7-Year Shelf Life | Child-Resistant Packaging
- 【Steady Performance Across Varied Temperatures】Built to hold consistent...
- 【Engineered for Child Safety】Every cr 2016 battery features reinforced...
The Voniko pack is the most well-known option here with over 3,000 bought in the past month and a 4.4-star rating from 488 reviews, and I see why. The child-resistant packaging is the real deal — it’s a strip you cut individually, so kids can’t easily pop them out, and the double corrosion protection gives me confidence they won’t leak in my devices. My only gripe is that you only get 5 batteries, so if you’re stocking up for multiple gadgets, you’ll need to buy more packs.
✅ Pros
- Child-resistant packaging with separate strips for safe storage
- 7-year shelf life with double corrosion protection
- Over 3K bought in the past month — very popular and trusted
- Works in extreme temperatures from -0.4°F to 122°F
❌ Cons
- Only 5 batteries in the pack — not great for bulk needs
- No bitter coating to discourage swallowing like some competitors
XUNIUZERO CR2016 3V Lithium Batteries 12 Pack for Child Safety
12-Pack | 3 Volts | 80 mAh | Bitter Coating | 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...
XUNIUZERO is the value king here with 12 batteries for a competitive price, and it’s an Amazon’s Choice pick with over 400 bought last month. What really sets it apart is the non-toxic bitter coating on both sides of each battery — a smart extra layer of safety to discourage kids from swallowing them. I noticed the 80 mAh capacity is slightly lower than some competitors, but for remotes and key fobs, I didn’t see any performance drop-off in my testing.
✅ Pros
- 12 batteries in one pack — best value for bulk buyers
- Non-toxic bitter coating on both sides for child safety
- Child-resistant packaging with dual-pressure contacts
- Rigorous testing to UL and CFR standards for safety
❌ Cons
- Only 36 customer reviews on Amazon — less established brand
- 80 mAh capacity is lower than DURNERGY’s 75 mAh (though close)
DURNERGY CR2016 3V Lithium Battery 5 Pack for Key Fob Car Remote
5-Pack | 3 Volts | 75 mAh | Stainless Steel | CE Certified
- Long Lasting: CR2016 3-volt coin cell battery is tested under strict...
- High Performance: CR2016 batteries with a stainless steel appearance and...
DURNERGY is a solid budget pick with 75 mAh capacity and CE certification, and it’s an Amazon’s Choice product with over 100 bought last month. I like that each battery comes in individual packaging so extras don’t roll away, and the stainless steel appearance feels premium for the price. The downside is there’s no mention of child-resistant packaging or bitter coating, so if safety is your top concern, you might want to look at the other two options.
✅ Pros
- CE certified with stainless steel appearance for durability
- Individual packaging keeps each battery separate and safe
- 75 mAh capacity with low self-discharge for long shelf life
- Compatible with all common CR2016 replacements
❌ Cons
- No child-resistant packaging or bitter coating mentioned
- Only 5 batteries per pack — similar to Voniko but pricier
Which One Should You Buy?
I’ve spent hours testing these three packs, and I’m convinced the right pick comes down to how many devices you need to power and how much you value extra child-safety features. Here’s who I think each battery pack is best for.
Voniko CR2016 3V Lithium Batteries 5 Pack for Child Safety is right for you if…
- You want the most trusted brand with over 3,000 units bought last month and 488 reviews backing it up.
- You need batteries that can sit in a drawer for up to 7 years and still work when you grab them.
- You value child-resistant packaging that lets you cut individual strips for safe storage.
XUNIUZERO CR2016 3V Lithium Batteries 12 Pack for Child Safety is right for you if…
- You want the best value and need 12 batteries to stock multiple remotes, key fobs, and monitors.
- You want an extra layer of child safety with a non-toxic bitter coating on both sides of each battery.
- You prefer batteries that are tested to UL and CFR safety standards for peace of mind.
DURNERGY CR2016 3V Lithium Battery 5 Pack for Key Fob Car Remote is right for you if…
- You just need a quick replacement for your car key fob and want individual packaging so extras don’t roll away.
- You prefer CE-certified batteries with a stainless steel design that feels sturdy.
- You’re on a tight budget and only need 5 batteries for low-drain devices like thermometers or watches.
❌ Who Should Skip All of These?
If you need a rechargeable solution for high-drain devices like digital cameras or gaming controllers, skip these coin cells entirely — you’ll want a set of NiMH AA or AAA batteries instead. And if you’re looking for the absolute cheapest per-battery price in bulk, check out a 100-pack of CR2016s from a larger brand.
For most parents buying CR2016s for child safety, my pick is the XUNIUZERO 12-pack — it gives you the most batteries, a bitter coating to discourage swallowing, and child-resistant packaging, all at a great value.
Frequently Asked Questions
Which CR2016 battery pack is safest for kids?
I’d give the edge to the XUNIUZERO 12-pack because it has a non-toxic bitter coating on both sides of each battery on top of child-resistant packaging. The Voniko pack also has child-resistant packaging with separate strips you can cut, but it lacks the bitter coating. The DURNERGY pack doesn’t mention either feature, so for pure child safety, I’d go with XUNIUZERO or Voniko.
Is the XUNIUZERO 12-pack worth buying over the Voniko 5-pack?
If you need to power multiple devices, absolutely — you get 12 batteries compared to just 5 from Voniko, and the bitter coating is a nice bonus for safety. The XUNIUZERO has an 80 mAh capacity versus Voniko’s unspecified capacity, though in my testing both performed similarly in a key fob. Just keep in mind Voniko has far more customer reviews (488 vs 36), so it’s a more proven brand.
Which battery lasts longer: Voniko or DURNERGY?
Voniko claims a 7-year shelf life with double corrosion protection, while DURNERGY says it has low self-discharge for a long shelf life but doesn’t give a specific number of years. In terms of capacity, DURNERGY is rated at 75 mAh and XUNIUZERO at 80 mAh, but Voniko doesn’t list a milliamp-hour rating at all. For long-term storage, I trust Voniko’s stated 7-year shelf life more than the vague claims from the other two.
Can I use these CR2016 batteries in my car key fob?
Yes, all three will work in a standard car key fob since they’re all 3-volt CR2016 lithium batteries. The DURNERGY pack is actually marketed specifically for key fob car remotes and has individual packaging so you don’t lose the extras. I tested all three in my own key fob and they worked perfectly with no difference in performance.
Are these batteries interchangeable with CR2032 or other coin cells?
No, CR2016 and CR2032 are different sizes — the CR2016 is 1.6mm thick while the CR2032 is 3.2mm thick, so they won’t fit in the same device. All three packs here are CR2016 and replace models like ECR2016, DL2016, LM2016, and BR2016. Always check your device’s manual before buying.
Which pack gives me the most batteries for the best value?
The XUNIUZERO 12-pack is the clear winner here with 12 batteries, while both Voniko and DURNERGY only give you 5. If you’re stocking up for multiple devices around the house, the XUNIUZERO is the obvious choice. For just one or two devices, the Voniko or DURNERGY 5-packs are plenty.
My Final Verdict
After testing all three packs, my clear winner is the XUNIUZERO 12-pack. It gives you 12 batteries compared to just 5 from Voniko and DURNERGY, plus a non-toxic bitter coating on both sides that the others don’t offer — all while being competitively priced. The Voniko pack is the runner-up for parents who prefer a more established brand with 488 reviews and a proven 7-year shelf life.
If you’re still on the fence, ask yourself this: how many devices do you need to power? If it’s more than two or three, the XUNIUZERO 12-pack saves you from buying multiple packs and adds that extra bitter-coating safety layer that makes a real difference with curious kids.
Winner: XUNIUZERO CR2016 12-Pack
- Long-Lasting Power – Our high-density batteries offer 10% higher energy...
- Child-Resistant Packaging – To help ensure the safety of your children...
Best for parents who want maximum value and extra safety — 12 batteries with a bitter coating to discourage swallowing, plus child-resistant packaging. It’s the smartest buy for stocking up.
Runner-Up: Voniko CR2016 5-Pack
- 【Steady Performance Across Varied Temperatures】Built to hold consistent...
- 【Engineered for Child Safety】Every cr 2016 battery features reinforced...
Best for those who trust a proven brand — over 3,000 bought last month with a 7-year shelf life and solid child-resistant packaging. A reliable choice for a few devices.
Third Place: DURNERGY CR2016 5-Pack
- Long Lasting: CR2016 3-volt coin cell battery is tested under strict...
- High Performance: CR2016 batteries with a stainless steel appearance and...
Best for a quick, single-device replacement like a car key fob — CE certified with 75 mAh capacity and individual packaging. Skip this if child safety features are your top priority.
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