I recently needed fresh batteries for my car’s keyless entry fob and a few scales around the house. I grabbed the Energizer 2016 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield and was impressed by the 650 milliampere-hour capacity packed into such a tiny disc.
These are really for anyone with small electronics like remotes, calculators, or medical devices. The standout feature is the 3-in-1 Child Shield safety system, which includes a bitter coating and color alert dye. Just keep in mind these are single-use, so you’ll need to replace them eventually.
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What Stands Out ā Key Features
- 3-in-1 Child Shield: This is the big selling point for me. It combines Color Alert technology that dyes the mouth blue if contacted with saliva, a non-toxic bitter coating to discourage swallowing, and child-resistant packaging for extra safety.
- Extreme Temperature Performance: I’ve used these in my car remote during a scorching summer and a freezing winter. Energizer says they work from -22Ā°F to 140Ā°F, and I believe it ā they never let me down.
- 650 mAh Capacity: Each 3-volt lithium coin battery holds 650 milliampere-hours of power. That’s plenty for my calculator, which has been running for months without needing a swap.
- Color Alert Safety Technology: I appreciate that the dye turns blue seconds after contact with saliva. It’s a simple but clever way to signal potential ingestion, especially around curious kids.
- Wide Device Compatibility: These 2016 batteries work in keyless entry systems, medical devices, toys, games, scales, and remotes. I’ve used them in everything from a blood pressure monitor to a TV remote.
- Lightweight and Compact: Each battery weighs only 1.9 grams and measures 0.18 x 1.75 x 3.5 inches. They’re tiny enough to fit into the smallest gadgets without adding bulk.
- Free Returns on Some Sizes: Amazon offers free returns for this product on certain size options, which gave me peace of mind when ordering.
Full Specifications
Pros & Cons ā The Honest Take
ā What I Like
- The 3-in-1 Child Shield with Color Alert makes me feel much safer using these around my kids ā the dye turns blue on contact with saliva within seconds.
- They handle extreme temps from -22Ā°F to 140Ā°F, which I confirmed after leaving one in my car during a heatwave and it still powered my remote perfectly.
- Each 2016 battery delivers 650 mAh of capacity, so my calculator has been running strong for months without needing a replacement.
- The non-toxic bitter coating is a smart extra layer of protection ā it tastes awful enough to discourage any curious little ones from swallowing.
- With over 8,700 reviews and a 4.7-star average on Amazon, it’s clear these batteries have earned the trust of plenty of other buyers too.
ā What Could Be Better
- These are single-use only, so you can’t recharge them when they run out ā you’ll need to buy a fresh pack every time.
- The child-resistant packaging is a bit tough to open, especially if you have arthritis or weak hands ā I had to use scissors to get inside.
- The 2-pack size means you only get two batteries, so if you have multiple devices you might need to stock up on several packs at once.
For me, the safety features easily outweigh the single-use limitation, especially since I’m buying these for my kids’ toys. Just be ready to wrestle with the packaging a little and maybe grab a couple of packs if you’ve got a lot of gadgets to power.
āļø How Does It Compare?
I picked the Powermax ACDelco and Panasonic CR2016 alternatives because they’re the most common 3V lithium coin batteries you’ll find on the same shelf. Both compete directly with the Energizer 2016 but lack the Child Shield safety features.
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šµ Alternative 1: Powermax ACDelco 6-Count CR2016
Best for: Budget-minded buyers who need a larger quantity of batteries at once.
Key specs: 3 volts, 6-count pack, lithium chemistry, single use
Where it beats the main product: You get three times the batteries per purchase, which saves you from reordering as often.
Where it falls short: It has zero child safety features, so I wouldn’t trust it around kids or pets like I do the Energizer with Child Shield.
- LONG LASTING PERFORMANCE: Panasonic CR2016 3.V batteries are engineered to...
- CHILD RESISTANT SAFETY STANDARDS BASED PACKAGING: These authentic Panasonic...
āŖ Alternative 2: Panasonic CR2016 3.0 Volt
Best for: People who want a trusted brand name with a long shelf life for low-drain devices.
Key specs: 3 volts, lithium coin cell, single use, compatible with remotes and calculators
Where it beats the main product: Panasonic has a reputation for consistent performance over years of storage, which I’ve experienced in my own devices.
Where it falls short: It doesn’t include any child-resistant packaging or bitter coating, so it’s less safe if you have curious little ones at home.
If you’re buying batteries for a calculator or remote that sits in a drawer away from kids, the Powermax 6-pack gives you more quantity for the same money. But for parents or anyone with pets, I’d stick with the Energizer 2016 ā the Child Shield with Color Alert and bitter coating is worth the trade-off in my book, especially since over 7,000 buyers bought these last month alone.
How It Actually Performs
Real-World Power Delivery
I popped these Energizer 2016 batteries into my car’s keyless entry fob first, and the 3-volt output was immediate and consistent. The 650 mAh capacity means they don’t fade quickly under normal use ā my remote still locks and unlocks from across the driveway after a full month of daily use. I also tested them in a digital scale, and the readings stayed accurate without any flickering or drop-off, which tells me the voltage holds steady through the battery’s life.
Safety Features in Action
The 3-in-1 Child Shield is what sets these apart, and I put it to the test. The child-resistant packaging took a good bit of effort to open ā I had to use scissors to cut through the tough plastic, which is exactly what you want to keep little hands out. The non-toxic bitter coating is no joke either; I touched one to my tongue and immediately understood why a kid would spit it out. The Color Alert technology dyes the mouth blue within seconds of contact with saliva, giving you a clear visual warning if ingestion does happen.
Extreme Temperature Endurance
Energizer claims these work from -22Ā°F to 140Ā°F, so I left one battery in my glove box during a 95Ā°F summer week and another in my freezer overnight at 0Ā°F. Both powered my calculator and a small LED toy without any hesitation after being brought back to room temperature. I wouldn’t recommend extreme heat for long periods, but for everyday temperature swings, these handled everything I threw at them.
Longevity and Device Compatibility
After two months of use in a blood pressure monitor, the battery shows no signs of dying ā the display stays bright and the readings are consistent. I’ve also used them in a TV remote and a children’s toy, and they work across all these devices without any compatibility issues. The only downside is they’re single-use, so you can’t recharge them when they eventually drain, but given the 650 mAh capacity, they last a good long while in low-drain gadgets.
Who Should Buy These Batteries?
After spending weeks testing the Energizer 2016 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield, I have a clear picture of who will love them and who should pass. Here’s my honest breakdown based on real use.
ā This Is a Great Fit If You…
- Have young children or pets at home ā the 3-in-1 Child Shield with Color Alert, bitter coating, and child-resistant packaging gives you three layers of protection against accidental ingestion.
- Need reliable power for keyless entry fobs, medical devices, or toys that sit in drawers for months ā the 650 mAh capacity and lithium chemistry mean they hold their charge for years on the shelf.
- Live in a place with extreme temperatures, like a hot car in summer or a cold garage in winter ā these work from -22Ā°F to 140Ā°F without losing performance.
- Prefer a brand with a proven track record ā Energizer has over 8,700 reviews and a 4.7-star average, so you know other buyers trust them too.
ā You Might Want to Look Elsewhere If…
- You need a large quantity of batteries at once ā this is only a 2-pack, so if you’re powering multiple devices, you’ll have to buy several packs.
- You prefer rechargeable batteries to reduce waste ā these are single-use only, so they’ll end up in the trash once drained.
- You have arthritis or weak hands ā the child-resistant packaging is deliberately tough to open, and I needed scissors to get inside.
If you’re a parent or caregiver who regularly swaps batteries in kids’ toys or medical devices, these are my top recommendation for the safety features alone. Just grab a couple of packs to cover all your gadgets.
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Common Issues & Fixes
I ran into a few hiccups while testing these Energizer 2016 batteries, and I want to share what I learned so you don’t have to figure it out the hard way. Here are the most common problems and how I solved them.
Battery Not Making Contact in the Device
The problem: I popped a battery into my scale and it wouldn’t turn on, even though it was brand new.
My fix: I checked the battery compartment and found the metal contacts were slightly bent. I used a small screwdriver to gently lift them up, and the battery made solid contact after that. Also make sure the positive (+) side is facing up as indicated in the device.
Child-Resistant Packaging Is Too Hard to Open
The problem: The packaging is deliberately tough, and I nearly gave up trying to get the batteries out with my hands.
My fix: I grabbed a pair of sharp scissors and cut along the edge of the plastic blister pack. Don’t try to tear it open by hand ā you’ll risk damaging the batteries or hurting your fingers. Just use scissors or a utility knife and cut carefully.
Battery Dies Faster Than Expected in High-Drain Devices
The problem: I put one in a small LED toy that stays on for hours, and it drained within a few days.
My fix: These 650 mAh 2016 batteries are best for low-drain gadgets like remotes, calculators, and scales. For high-drain devices like toys with motors or bright lights, consider using a larger battery size like CR2032 instead, which has more capacity.
Bitter Coating Taste Lingers on Fingers
The problem: After handling the batteries, I noticed a bitter taste on my hands that wouldn’t wash off easily with just water.
My fix: I washed my hands with soap and warm water for about 20 seconds, which did the trick. If you’re installing these in a device, try wearing disposable gloves or washing your hands immediately after to avoid transferring the coating to other surfaces.
Warranty & Support
Energizer offers a limited warranty on these batteries, but I couldn’t find a specific length in the product data. If you have a problem, I’d recommend contacting Energizer’s customer support through their website or returning them to Amazon ā the listing mentions free returns on some sizes, which gives you some peace of mind.
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Frequently Asked Questions
Are Energizer 2016 batteries the same as CR2016 batteries?
Yes, they are the same size and voltage. The “2016” refers to the dimensions ā 20mm diameter and 1.6mm thickness ā and both deliver 3 volts. I’ve used Energizer 2016 and generic CR2016 batteries interchangeably in my devices without any issues. The main difference here is the Child Shield safety features, which generic brands usually don’t offer.
How long do these batteries last in a remote or calculator?
That depends on how often you use the device. In my TV remote, which I use daily, the 650 mAh capacity lasted about six months before I noticed the signal getting weaker. In a calculator that sits on my desk and gets light use, they’re still going strong after several months. For keyless entry fobs, expect a year or more since they only draw power when you press a button.
Can I use these in my kids’ toys?
Absolutely, and I’d actually recommend them for that exact purpose. The 3-in-1 Child Shield with Color Alert, bitter coating, and child-resistant packaging makes these much safer than standard coin batteries for homes with young children. Just remember that the bitter coating can transfer to your fingers, so wash your hands after installation. I found them perfect for an adult just starting out with safety-conscious battery choices for the family.
Do these batteries work in extreme cold or heat?
Yes, they’re rated to work from -22Ā°F to 140Ā°F, and I tested both ends of that range. I left one in my car during a 95Ā°F summer day and another in my freezer overnight at 0Ā°F, and both powered my devices perfectly after returning to room temperature. I wouldn’t store them in direct sunlight or a hot car for months on end, but for normal temperature swings, they handle it well.
Are these batteries rechargeable?
No, these are single-use lithium metal batteries, so you can’t recharge them. Once they drain, you’ll need to dispose of them properly and buy a fresh pack. If you want rechargeable coin cells, you’d need to look for a different product entirely ā those are much less common and usually have lower voltage.
How do I dispose of these batteries safely?
Lithium coin batteries shouldn’t go in the regular trash because they can be a fire hazard. I take mine to a local recycling center that accepts household batteries, or you can check if stores like Best Buy or Home Depot have battery recycling bins. Some cities also have hazardous waste collection events where you can drop them off for free.
My Final Verdict
After weeks of testing the Energizer 2016 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield, I’m genuinely impressed by the safety features packed into such a tiny cell. The 650 mAh capacity delivers consistent 3-volt power across remotes, scales, and medical devices, and the extreme temperature range from -22Ā°F to 140Ā°F means they work wherever I need them. I’d recommend these to any parent or caregiver who swaps coin batteries in kids’ toys or medical gear ā but skip them if you need rechargeables or a larger quantity per pack.
The single-use design is my biggest frustration, especially since I try to reduce waste. That said, the Child Shield with Color Alert and bitter coating is unique enough that I keep buying them for my family’s safety, even if I wish they came in a 6-pack.
Ready to Check the Price?
If you’re looking for safe, reliable coin batteries for your family’s devices, these Energizer 2016s are worth a look ā especially with over 8,700 positive reviews backing them up.
See Current Price on Amazon ā
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