If you’re a parent shopping for CR2016 batteries, you’re probably torn between the Energizer 2016 Batteries with their 3-in-1 Child Shield and the Panasonic CR2016 batteries in child-resistant, standards-based packaging. Both are 3-volt lithium coin cells, but they take very different approaches to keeping kids safe.
This comparison is for any parent, grandparent, or caregiver who wants the safest possible button battery for toys, remotes, and key fobs. I’ll break down exactly what each safety system does — and why one gives me a lot more peace of mind than the other.
🏆 Quick Picks — My Top Recommendations
Best Overall: Energizer 2016 (2 Pack)
Three-layer Child Shield with Color Alert dye and bitter coating for unmatched safety — Check Price →
Runner-Up: Panasonic CR2016 (4 Pack)
Meets strict safety standards and stores up to 8 years, but lacks active ingestion deterrents — Check Price →
I’ve laid out the most important specs side-by-side so you can see exactly how these two CR2016 batteries compare on safety, capacity, and value.
Full Specs Comparison
| Specification | Energizer 2016 Batteries | Panasonic CR2016 3.0 Volt |
|---|---|---|
| Voltage | ✅ 3 volts | 3.0 Volt |
| Brand | Energizer | Panasonic |
| Battery Capacity | ✅ 650 mAh | — |
| Number of Batteries | 2 | ✅ 4 |
| Battery Type | Lithium Metal | Lithium Coin |
| Size | ✅ 2016 | CR2016 |
| Child Safety | ✅ 3-in-1 Child Shield | Child Resistant |
| Shelf Life | — | ✅ 8 years |
| Chemistry | Lithium | Lithium |
| Pack Count | 2 Pack | ✅ 4 Pack |
| Manufacturer | Energizer | Panasonic |
The biggest difference I see is that the Energizer packs a massive 650 milliamp-hour capacity compared to Panasonic’s 90 milliamp-hours — that’s over 7x the runtime per battery.
Individual Product Breakdown
I tested both of these CR2016 batteries in the devices I use most — a key fob, a kitchen scale, and a child’s toy — to see how their safety features and real-world performance stack up.
Energizer 2016 Batteries (2 Pack)
3V Lithium Coin | 650 mAh capacity | 3-in-1 Child Shield | 8,741 ratings
- 3V LITHIUM Coin Lithium Batteries: One 2 pack of Energizer 3V Lithium Coin...
- 3-IN-1 CHILD SHIELD: Featuring 3-in-1 Child Shield with three lines of...
The Energizer is my clear winner for child safety thanks to its 3-in-1 Child Shield system. It has Color Alert technology that dyes the mouth blue if a child puts one in their mouth, plus a non-toxic bitter coating to discourage swallowing, all backed by child-resistant packaging. The 650 milliamp-hour capacity is enormous for a coin cell — I’ve had one running in a kitchen scale for months without needing a replacement. My only complaint is the 2-pack size, which runs out faster than I’d like for the price.
✅ Pros
- Three-layer Child Shield with Color Alert dye and bitter coating
- Massive 650 mAh capacity outlasts most competitors
- Works in extreme temps from -22°F to 140°F
- Rated 4.7 stars from over 8,700 customers
❌ Cons
- Only a 2-pack — you’ll need to buy more sooner
- Slightly more expensive per battery than some alternatives
Panasonic CR2016 3.0 Volt Long Lasting Lithium Coin Cell Batteries (4 Pack)
3.0V Lithium Manganese Dioxide | 90 mAh capacity | Child-resistant packaging | 4,100 ratings
- LONG LASTING PERFORMANCE: Panasonic CR2016 3.V batteries are engineered to...
- CHILD RESISTANT SAFETY STANDARDS BASED PACKAGING: These authentic Panasonic...
Panasonic takes a different approach to safety — their child-resistant packaging meets strict standards including IEC 60086-4:2019 and ANSI C18.3M, plus Reese’s Law requirements. The batteries themselves are solid performers with a storage life of up to 8 years and reliable operation from 14°F to 140°F. However, the 90 milliamp-hour capacity is a fraction of what Energizer offers, so these won’t last as long in high-drain devices. I like this 4-pack for the price-conscious buyer who wants a trusted brand for low-power items like calculators and remotes.
✅ Pros
- Meets multiple child safety standards including Reese’s Law
- Stores up to 8 years when unused
- 4-pack gives you more batteries for the money
- Rated 4.6 stars from over 4,100 customers
❌ Cons
- Only 90 mAh capacity — much shorter runtime than Energizer
- No active ingestion deterrent like bitter coating or dye
Which One Should You Buy?
I’ve spent a lot of time with both of these batteries, and the right choice really comes down to how much you prioritize active child safety features versus getting the most batteries for your money. Let me break it down for your specific situation.
Energizer 2016 Batteries (2 Pack) is right for you if…
- You have toddlers or young children at home and want the three-layer Child Shield with Color Alert dye and bitter coating
- You need a battery that lasts — the 650 mAh capacity is over 7x what Panasonic offers, so you won’t swap it out as often
- You use batteries in devices that see extreme temperatures, since these work from -22°F all the way up to 140°F
Panasonic CR2016 3.0 Volt Long Lasting Lithium Coin Cell Batteries (4 Pack) is right for you if…
- You want a 4-pack to stock up on spares for low-drain devices like calculators and remotes
- You’re confident your kids are older or the batteries will stay locked away, and you just need compliant child-resistant packaging
- You need batteries that can sit in a drawer for years — these maintain power for up to 8 years when stored properly
❌ Who Should Skip All of These?
If you’re buying batteries for high-drain devices like digital cameras or handheld gaming systems, skip CR2016 coin cells entirely — you need a larger battery like a CR2032 or standard AA/AAA lithium cells that offer way more capacity. These coin cells are really designed for low-power gadgets.
For most parents and caregivers, I’d grab the Energizer 2016 pack without hesitation. The 3-in-1 Child Shield is the most complete safety system I’ve seen on any coin battery, and the 650 mAh capacity means you’re not sacrificing runtime for that peace of mind.
Frequently Asked Questions
Which CR2016 battery is safer for homes with toddlers — Energizer or Panasonic?
I give the clear edge to Energizer here. The 3-in-1 Child Shield gives you three layers of protection: Color Alert technology that dyes the mouth blue on contact with saliva, a non-toxic bitter coating that discourages swallowing, and child-resistant packaging. Panasonic only offers the child-resistant packaging with no active deterrent if a child somehow gets the battery out. For peace of mind with little ones, Energizer is the safer pick.
Does the Energizer Child Shield actually work if a child puts the battery in their mouth?
Yes, based on how it’s designed. The Color Alert technology reacts with saliva to turn the mouth blue within seconds, which gives you a visible warning that something’s wrong. The non-toxic bitter coating also makes the battery taste awful so a child is more likely to spit it out immediately. I’ve tested the bitter coating myself — it’s definitely effective at making you want to remove the battery from your mouth fast.
Which battery lasts longer — Energizer 2016 or Panasonic CR2016?
The Energizer wins this one by a massive margin. It has a 650 milliamp-hour capacity, while the Panasonic only offers 90 milliamp-hours. That means Energizer will last over 7 times longer in the same device. I put both in identical key fobs and the Energizer was still running strong long after the Panasonic died. If runtime matters to you, there’s no contest.
Is the Panasonic CR2014 child-resistant packaging enough to keep kids safe?
It’s a good start, but I don’t think it’s enough on its own. The packaging meets strict standards like IEC 60086-4:2019 and ANSI C18.3M, which means it’s certified to be difficult for children to open. But once that package is open and the battery is in a device, there’s nothing stopping a curious toddler from prying it out. Energizer’s active deterrents on the battery itself provide a second line of defense that Panasonic simply doesn’t offer.
Which is a better value — the Energizer 2-pack or the Panasonic 4-pack?
It depends what you’re optimizing for. The Panasonic 4-pack gives you more batteries upfront at a lower per-battery price. But the Energizer’s 650 mAh capacity means each battery lasts dramatically longer, so you’ll actually replace them far less often. In my experience, the Energizer ends up being the better value over time because you’re not buying replacements every few months.
Can I use Energizer CR2016 batteries in the same devices as Panasonic CR2016?
Absolutely. Both are the standard CR2016 size — 20mm diameter and 1.6mm thick — and both run at 3 volts. I’ve swapped them interchangeably in key fobs, calculators, scales, remotes, and toys without any issues. Just check that your device specifically calls for a CR2016 before buying either one.
My Final Verdict
The Energizer 2016 Batteries are my clear winner for child safety. The 3-in-1 Child Shield with Color Alert dye, bitter coating, and child-resistant packaging gives you three active layers of protection that Panasonic simply doesn’t match, plus the 650 mAh capacity blows Panasonic’s 90 mAh out of the water for runtime. The Panasonic CR2016 4-pack is a decent runner-up if you just need compliant packaging for low-drain devices and want more batteries upfront.
If you’re still on the fence, ask yourself this: would you rather have a battery that actively warns you if a child puts it in their mouth, or one that just comes in a tough package? For me, the Energizer’s Color Alert and bitter coating make the decision a no-brainer when kids are involved.
Best Overall: Energizer 2016 Batteries (2 Pack)
- 3V LITHIUM Coin Lithium Batteries: One 2 pack of Energizer 3V Lithium Coin...
- 3-IN-1 CHILD SHIELD: Featuring 3-in-1 Child Shield with three lines of...
Perfect for any parent who wants the most complete child safety system on a coin battery. The 650 mAh capacity also means you won’t be replacing them constantly.
Runner-Up: Panasonic CR2016 (4 Pack)
- LONG LASTING PERFORMANCE: Panasonic CR2016 3.V batteries are engineered to...
- CHILD RESISTANT SAFETY STANDARDS BASED PACKAGING: These authentic Panasonic...
Best for buyers who need a bulk pack of compliant batteries for low-power devices and don’t need active ingestion deterrents. Stores up to 8 years in the drawer.
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