I’ve pulled out plenty of CR2016 batteries, but sometimes they come sealed on both sides with a tough plastic wrapper. You have to cut it open to get the battery out, which feels strange at first.
This double-sided seal isn’t an accident—it’s often a safety feature to prevent short circuits or accidental contact. In my experience, these sealed packs are common in medical devices and key fobs where moisture protection matters most.
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Why the Double Seal Matters More Than You Think
I remember the first time I faced a CR2016 battery that was sealed on both sides. My son’s favorite toy car stopped working right before his birthday party.
I grabbed what I thought was the right battery from my drawer. But I could not open the package without scissors. I was frustrated and running out of time.
The Real Cost of Cutting the Wrong Battery Pack
In my experience, this sealed design is actually protecting you from a bigger headache. If the battery touches metal in your pocket or drawer, it can short circuit and drain fast.
I once cut open a sealed CR2016 pack for my kitchen scale. I did not check the voltage first. The scale still did not work, and I had wasted three dollars on the wrong battery.
When a Sealed Battery Saves Your Day
Think about a child’s electronic toy that gets dropped. A loose battery can pop out and get lost under the couch. A sealed battery stays put.
- I have seen kids cry over a toy that would not turn on because the battery fell out.
- A sealed pack means the battery stays right where you put it until you cut it free.
- This design also keeps the battery fresh longer, so you do not have to buy replacements as often.
The double seal is not just annoying packaging. It is a safety feature that keeps your devices running when you need them most.
How I Learned to Open Sealed CR2016 Batteries Safely
Honestly, the first few times I dealt with these sealed batteries, I just grabbed scissors and hacked at the plastic. I ended up scratching the battery case or bending the metal tabs.
That ruined a perfectly good battery before I even used it. I learned the hard way that there is a smarter approach.
The Simple Trick That Saved My Batteries
I now use small, sharp scissors instead of kitchen shears. I cut along the edge of the seal, not through the middle of the battery.
This keeps the metal contacts safe and prevents the battery from shorting out. My kids watch me do it now and know not to touch the exposed ends.
What to Do If the Seal Feels Too Tough
- I press down on the battery with my thumb while cutting to keep it steady.
- I never use my teeth to open these packs. The battery could leak or crack.
- I always check the expiration date on the seal before cutting it open.
You are probably tired of wasting money on batteries that do not fit or die too fast. I felt the same way until I grabbed a multi-pack that actually worked for my remotes and toys.
- KEY FOB BATTERY INSTALLATION: This kit includes [qty 2] CR2016 batteries...
- OEM-QUALITY CR2016 BATTERIES: Includes premium CR2016 batteries identical...
What I Look for When Buying Sealed CR2016 Batteries
After cutting open dozens of these packs, I have learned what matters and what does not. Here is what I check before I hand over my money.
The Seal Itself Tells You a Lot
I look for a clear, tight seal that is not wrinkled or torn. If the plastic looks loose, air and moisture might have already gotten inside.
That can drain the battery before you even use it. I once bought a pack where the seal was already peeling, and three batteries were dead on arrival.
Check the Brand on the Package
I stick with brands I recognize from drugstores or hardware stores. Generic no-name brands often have weaker seals that are harder to cut.
One time I bought a cheap off-brand pack, and the plastic was so brittle it shattered into sharp pieces. I will not make that mistake again.
Look at the Expiration Date First
I always flip the package over and find the date before buying. A sealed battery can last years, but only if it is stored properly.
I grab packs with at least three years left on the date. That way I know the battery will hold its charge when I finally cut it open.
The Mistake I See People Make With Sealed CR2016 Batteries
I wish someone had told me this earlier. The biggest mistake I see is people assuming the double seal means the battery is broken or defective.
They throw the whole pack away or return it to the store. I have done that myself, only to learn later that the seal was perfectly normal.
Why You Should Not Peel Both Sides at Once
Another common error is peeling both sides of the seal off completely before using the battery. That exposes the metal contacts to dust and moisture.
I once did this and left the battery on my counter for a week. When I finally put it in my remote, it barely worked for two days.
The Right Way to Handle the Seal
I only cut open one side of the seal at a time. I take the battery out and leave the other side sealed until I need it.
This keeps the spare battery fresh and protected. It is a small habit that has saved me from buying replacements too often.
You are probably tired of batteries dying too fast or not fitting right. I felt the same way until I found a reliable pack that actually lasted in my devices.
- CONFIRM FIT **Please confirm compatibility using the fitment guide located...
- Compatible only with Toyota traditional key heads in which the key is...
The Trick That Made Me Stop Hating These Sealed Batteries
Here is the honest truth that changed everything for me. I used to dread cutting open these sealed CR2016 packs because I always nicked the battery.
Then I realized I was using the wrong tool. A tiny pair of embroidery scissors works way better than big kitchen shears for this job.
I keep a small pair in my junk drawer right next to where I store extra batteries. Now I can open a sealed pack in under ten seconds without damage.
Why This Little Change Saved Me Money
Before I switched scissors, I ruined about one out of every five batteries I opened. That is a lot of wasted money over a year.
Now I have not damaged a single battery since I started using the right tool. My remotes and toys all work on the first try.
I also learned to cut along the flat edge of the seal, not the side with the battery bulge. That keeps the blade away from the metal casing entirely.
My Top Picks for Sealed CR2016 Batteries That Actually Work
I have tested a handful of these double-sealed packs over the past year. Here are the two I keep buying for my own home.
ViCep 5-Pack CR2016 CMOS Battery 3V Motherboard BIOS — Perfect for Bulk Buyers
The ViCep 5-Pack CR2016 CMOS Battery is what I grab when I need a pile of spares for my computers and car key fobs. I love that each battery comes individually sealed on both sides, which keeps them fresh for years. It is perfect for anyone who hates running out of batteries mid-project.
The only trade-off is that the seal is a bit stiff, so you need sharp scissors to open it cleanly.
- 1.Product Specifications--Model: CR2016; Connector: SHR02. Make Sure Device...
- 2.Long-Lasting Power & Reliable Performance--Less than 3% self-discharge...
Battery Guru CR2016 3V Car Key Battery Pack of 2 — Best for Quick Replacements
The Battery Guru CR2016 3V Car Key Battery is what I send my sister to buy when her remote dies at the worst moment. I like that the double seal is easy to cut with regular household scissors, so you do not need special tools. It is the perfect fit for someone who just needs one or two reliable batteries fast.
The honest trade-off is you only get two per pack, so it is not the best value if you need many spares.
- Recommended battery replacement for a low or dead car key fob battery...
- This battery is compatible with several types of car remotes. Please refer...
Conclusion
The double seal on your CR2016 battery is there to protect it, not to frustrate you.
Grab a pair of small scissors and cut open just one side of your next sealed pack right now. It takes ten seconds and you will finally understand why that extra plastic is actually a good thing.
Frequently Asked Questions about Why is My CR2016 Battery Sealed on Both Sides Requiring Cutting to Release?
Is it safe to cut open a sealed CR2016 battery pack?
Yes, it is safe as long as you use the right tool. I always use small scissors and cut along the edge of the seal.
Never use a knife or razor blade because you could slip and damage the battery. Keep your fingers away from the cutting path for extra safety.
Why are CR2016 batteries sealed on both sides instead of one?
The double seal protects the battery from moisture and dust that can drain its power. I have seen batteries die fast when stored loose in a drawer.
It also prevents the battery from touching metal objects that could cause a short circuit. This is why medical devices and car key fobs use this packaging.
Can I store a CR2016 battery after cutting the seal open?
I do not recommend storing a battery after you cut the seal unless you keep it in a dry container. The exposed metal contacts can lose charge over time.
If you only need one battery, cut open just one side of the pack. Leave the other battery sealed until you are ready to use it.
What is the best CR2016 battery for someone who needs reliable power in their car key fob?
I understand how frustrating it is when your car key fob stops working at the worst moment. A battery that holds its charge and fits perfectly is essential for peace of mind.
For my own fobs, I always grab the ones I sent my sister to buy because they come in a sealed pack and last a full year without dying.
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Which CR2016 battery won’t let me down when I need it for a child’s toy?
I know how heartbreaking it is when a toy stops working right before a birthday party. You need a battery that is fresh and ready to go the moment you cut it open.
What finally worked for me was what I grabbed for my kids because the double seal kept the battery perfectly fresh for months in my drawer.
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- 【Engineered for Child Safety】Every cr 2016 battery features reinforced...
Does the double seal mean the battery is expired or defective?
No, the double seal is completely normal and does not mean the battery is bad. I used to think the same thing and threw away perfectly good batteries.
Always check the expiration date printed on the package instead of judging by the seal. Most sealed CR2016 batteries last three to five years from the manufacture date.