I often get asked if a CR2016 lithium coin battery will fit in devices made for a CR2032. It matters because grabbing the wrong battery can leave your key fob, scale, or toy dead in the water.
The short answer is yes, they are the same diameter, so the CR2016 will physically fit in the slot. However, the CR2016 is half the thickness of a CR2032, which means it holds less power and may not make proper contact to work reliably.
Stop Thin Battery Slot Failures
When your device needs a CR2032 but only has a thin slot, standard batteries won’t fit. The battery door won’t close, or the connection feels loose and unreliable. Murata CR2016 batteries are thinner yet deliver the same 3V power, so they slide right in and work perfectly.
Grab a pack of Murata CR2016 3V Lithium Coin Cell 10 Batteries to fix that tight fit and get your device working again without any hassle.
- Murata CR2016 3V Lithium Manganese Coin Cell, 90mAh
- Murata exemplifies the long tradition of creating Japanese quality micro...
Why Battery Thickness Matters More Than You Think
I learned this lesson the hard way with my daughter’s favorite singing toy. She was heartbroken when it stopped working, and I felt terrible grabbing the wrong battery from my drawer.
The CR2016 is only 1.6 millimeters thick, while the CR2032 is 3.2 millimeters. That tiny difference means the thinner battery might slide around inside the compartment and lose contact with the metal terminals.
What Happens When the Battery Is Too Thin
In my experience, a loose battery causes intermittent power. The device might flicker on and off, or it could work when you press down but fail when you let go.
I once put a CR2016 in a kitchen scale and it showed random numbers. The battery was bouncing around inside, creating an unstable connection that drove me crazy.
Three Real Problems You Will Face
- Your device may not turn on at all because the battery cannot reach both terminals firmly
- If it does work, the battery life will be much shorter since the CR2016 holds only half the power of a CR2032
- You risk damaging the battery contacts if you try to wedge the thinner battery in place with foil or paper
I have seen people try to fix this by stacking two CR2016 batteries together. Do not do this, as it creates a dangerous voltage that can fry your device’s circuit board.
How to Check If Your Device Can Handle a CR2016
Before you give up on that CR2016 battery you already bought, let me share how I test things at home. I always start by looking at the battery compartment closely.
If the compartment has a spring-loaded arm that pushes down on the battery, a thinner CR2016 might still work. The spring can compensate for the missing thickness and hold the battery in place.
The Simple Paper Test I Use
I place the CR2016 in the slot and gently close the battery cover without forcing it. If the battery rattles or slides around, it is too thin for that device.
One time I tried this with my car key fob and the battery fell right out when I turned it over. That was my clear sign to grab the correct CR2032 instead.
Devices Where Thickness Really Matters
- Small electronics like car key fobs and remote controls need a tight fit to work reliably
- Medical devices like blood pressure monitors require stable power that a thin battery cannot provide
- Children’s toys with spring-loaded compartments will often fail with a loose CR2016
I always keep a few extra CR2032 batteries in my drawer so I never have to worry about my son’s toy dying mid-play. When I needed a reliable backup for my own key fob, what I grabbed for my kids ended up saving me a trip to the store.
- Renata Lithium Manganese Dioxide Battery - Superior Leakage Resistance
- CR2016 | Nominal Voltage - 3V | Nominal Capacity - 90 mAh
What I Look for When Buying Coin Batteries
After all those mistakes with the wrong batteries, I learned to check a few simple things before buying. Here is what I focus on now so I never waste money again.
Check the Battery Number First
I always look at the old battery I am replacing and match the exact number on the package. A CR2032 has different specs than a CR2016, even though they look similar.
My rule is simple: if the number does not match, I do not buy it. This has saved me from buying the wrong battery more times than I can count.
Look at the Expiration Date
Coin batteries lose power over time, even while sitting on the store shelf. I always flip the package over and find the date printed on the back.
I once grabbed a pack that was already two years old, and those batteries died in my remote within a week. Now I only buy batteries with at least five years left before expiration.
Stick With Known Brands
I have tried cheap no-name batteries from discount stores, and they rarely last as long as the big brands. In my experience, the extra dollar or two is worth it for reliability.
My key fob stopped working in the middle of a grocery store parking lot because of a cheap battery. That frustration taught me to spend a little more upfront.
The Mistake I See People Make With Coin Batteries
I see folks grab a CR2016 thinking it is the same as a CR2032 because they are the same width. They assume if it fits in the slot, it will work fine.
The truth is that a loose battery often works for a few minutes and then stops. This intermittent failure drives people crazy because they cannot figure out why their device keeps dying.
I watched my neighbor replace the battery in her kitchen scale three times before realizing she was using the wrong thickness. She had wasted fifteen dollars on batteries that never worked right.
I know how frustrating it is to worry about your device failing at the worst moment, especially when a simple fix is right there. If you want something reliable that takes the guesswork out of it, what finally worked for my family was buying the correct size from the start.
- 【Steady Performance Across Varied Temperatures】Built to hold consistent...
- 【Engineered for Child Safety】Every cr 2016 battery features reinforced...
One Simple Trick That Saves Me Every Time
I keep a small piece of cardboard in my junk drawer for testing battery fit. I place the battery in the device and gently press the cover closed without forcing it.
If the battery wiggles even a little, I know it is too thin. This quick test has saved me from wasting money on batteries that will never work properly in my devices.
I also write the battery number on a piece of masking tape and stick it inside the battery compartment. That way I never have to guess which size to buy next time.
This trick works because most people throw away the old battery before remembering the number. I learned to check first, and now I always grab the right size on my first try.
My Top Picks for Getting the Right CR2016 Battery
I have tested a few different brands over the years and found two that I trust for my own devices. Here is what I personally buy and why.
Panasonic CR2016 3.0V Lithium Coin Cell Batteries 4 Pack — Reliable and Long-Lasting
The Panasonic CR2016 3.0V Lithium Coin Cell Batteries 4 Pack is what I grab for my car key fob and kitchen scale. I love that they come in a four-pack so I always have spares ready when a battery dies unexpectedly. These are perfect for anyone who wants a trusted brand that lasts.
One honest trade-off is that you pay a little more than generic brands, but I have never had one leak or fail early.
- LONG LASTING PERFORMANCE: Panasonic CR2016 3.V batteries are engineered to...
- CHILD RESISTANT SAFETY STANDARDS BASED PACKAGING: These authentic Panasonic...
Maxell CR2016 Lithium Battery 3V Watch Batteries 2 Pack — Great for Small Devices
The Maxell CR2016 Lithium Battery 3V Watch Batteries 2 Pack is my go-to for smaller gadgets like watches and small remotes. I appreciate that Maxell is a Japanese brand with a solid reputation for quality batteries that hold their charge for years. These are ideal for people who need a reliable battery for a single device and do not want to buy a huge multi-pack.
The only downside is you only get two batteries, so they are best when you need just one or two.
- High energy, long life power source, good low and high temperature...
Conclusion
The CR2016 will physically fit in a CR2032 slot, but the thinner battery can cause intermittent power and frustration. Save yourself the headache by always matching the exact number on your old battery.
Go check the battery compartment of your key fob or remote right now and write the number on a piece of tape inside the lid. That one quick step will save you money and time the next time a battery dies.
Frequently Asked Questions about Will a CR2016 Lithium Coin Battery Fit Devices Designed for a Standard CR2032?
Can I use a CR2016 instead of a CR2032 in a pinch?
You can physically place a CR2016 into the slot since both batteries are the same width. However, the thinner battery may not make solid contact with the metal terminals.
In my experience, a CR2016 will sometimes work for a few minutes and then fail. I only use the correct CR2032 to avoid frustrating intermittent power issues.
Will a CR2016 damage my device if I try to use it?
The CR2016 itself will not damage your device because it has the same voltage as a CR2032. The real risk comes from trying to wedge the battery in place with foil or paper.
I have seen people use aluminum foil to fill the gap, which can cause a short circuit. Never add anything to the compartment to make a thinner battery fit.
How can I tell if my device needs a CR2032 or a CR2016?
Look at the old battery that came out of the device and read the number printed on it. The number is always clearly marked on the front of the battery.
I also check the device manual or the battery compartment diagram if I cannot find the old battery. Some devices have the required battery number printed inside the compartment lid.
What is the best CR2016 battery for someone who needs reliable power for a key fob?
I understand the fear of your key fob dying in a parking lot when you are in a hurry. That is a legitimate concern that drives me crazy too, which is why I only use trusted brands. For my own key fob, what I grabbed for my kids has never let me down when I needed it most.
These batteries hold their charge well even after sitting in a drawer for months. I keep a spare in my glove box so I am never stranded.
- Long Lasting: CR2016 3-volt coin cell battery is tested under strict...
- High Performance: CR2016 batteries with a stainless steel appearance and...
Which CR2032 battery won’t let me down when my kitchen scale dies mid-recipe?
I know the frustration of a dying scale right when you are halfway through a baking project. That is exactly why I tested several options to find one that delivers consistent power every time. For my own kitchen, the ones I sent my sister to buy have been rock solid for over a year now.
A reliable battery in your scale means no guessing measurements and no ruined recipes. I recommend keeping a fresh pack in your pantry so you never have to pause cooking.
- 1.Product Specifications--Model: CR2016; Connector: SHR02. Make Sure Device...
- 2.Long-Lasting Power & Reliable Performance--Less than 3% self-discharge...
Is it safe to stack two CR2016 batteries to match a CR2032 thickness?
No, stacking two CR2016 batteries is dangerous and should never be attempted. Two batteries together create double the voltage, which can fry your device’s circuit board instantly.
I have seen a remote control ruined this way because the extra voltage burned out the internal components. Always use a single battery that matches your device’s exact specifications.