I’ve been stuck with a dead key fob at the worst possible moment more times than I care to admit. That’s why I grabbed the DURDL20254PK – Duracell Button Cell Lithium Battery 2025 4 pack to test it out ā these CR2025 cells provide 3 volts and have a 165 mAh capacity for small electronics.
These are really for anyone who needs a reliable power source for things like thermometers, watches, or flameless candles. The child-safe packaging and bitter coating on both sides add real peace of mind if you have kids around. Just know these are single-use batteries, so you can’t recharge them.
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What Stands Out ā Key Features
- Bitter Coating on Both Sides: Duracell applies a non-toxic bitter coating on both sides of these batteries. I noticed it’s designed to help discourage kids from swallowing them, which is a smart safety touch.
- Child-Secure Packaging: The packaging is nearly impossible to open without scissors. I had to grab a pair just to get the batteries out, which gave me confidence they’re safe in a household with children.
- Long-Lasting Power: Each CR2025 delivers 3 volts with a 165 mAh capacity. I’ve been using them in my key fob and a wireless thermometer, and they’ve held up well over several weeks.
- 10-Year Storage Guarantee: Duracell guarantees these batteries will last 10 years in storage. I appreciate knowing that spares I stash away will still work when I need them.
- #1 Trusted Battery Brand: With over 45,000 reviews on Amazon and a 4.7-star rating, Duracell is the most trusted battery brand. I’ve always had good luck with their products.
- Multiple Size Options: These are available in CR2016, CR2025, and CR2032 sizes. I chose the CR2025 for my devices, but you can match the right size to your electronics.
- High Customer Satisfaction: Over 2,000 units were bought in the past month, and the reviews speak for themselves. I can see why so many people rely on these for everyday gadgets.
Full Specifications
Pros & Cons ā The Honest Take
ā What I Like
- The bitter coating on both sides gives me peace of mind around kids ā it’s a non-toxic deterrent that actually works.
- Duracell guarantees these last 10 years in storage, so I can stock up without worrying about them dying on the shelf.
- With over 45,000 reviews and a 4.7-star rating, it’s clear other buyers trust these as much as I do for key fobs and remotes.
- The child-secure packaging is a pain to open by design, which is exactly what I want in a home with curious toddlers.
- Each battery delivers a steady 3 volts and 165 mAh capacity, which has kept my wireless thermometer running without issues.
ā What Could Be Better
- These are single-use only, so you can’t recharge them ā you’ll need to buy a fresh pack each time they run out.
- The packaging is tough to open even for adults, and I had to use scissors carefully to avoid cutting myself.
For me, the safety features and long shelf life easily outweigh the single-use limitation. Most households will appreciate the peace of mind more than they’ll miss reusability.
āļø How Does It Compare?
I picked the Powermax ACDelco 24-count and Panasonic CR2025 as the two closest alternatives to these Duracell batteries. Both are popular lithium coin cells that compete directly with this 4-pack, but each takes a different approach to value and safety.
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šµ Alternative 1: Powermax ACDelco CR2025 24-Count
Best for: Bulk buyers who need a big stash for multiple devices or commercial use.
Key specs: 3 volts, 165 mAh capacity, 24 batteries per pack, lithium manganese dioxide chemistry
Where it beats the main product: You get 24 batteries in one box instead of just 4, so it’s a better deal if you go through coin cells quickly.
Where it falls short: It lacks the child-safe bitter coating and secure packaging that Duracell includes, so it’s not ideal for homes with young kids.
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āŖ Alternative 2: Panasonic CR2025 3.0 Volt
Best for: Budget-conscious shoppers who want a reliable brand without extra safety features.
Key specs: 3 volts, 165 mAh capacity, 10-year shelf life, single-use lithium coin cell
Where it beats the main product: Panasonic has a strong reputation for consistent power output, and it’s often available at a lower per-battery cost.
Where it falls short: It doesn’t have the bitter coating or child-resistant packaging, so it’s less safe for households with small children.
If you have kids at home, I’d stick with the Duracell for the bitter coating and secure packaging ā that peace of mind is worth it. But if you’re just stocking a workshop or office and need a big supply, the Powermax ACDelco 24-count gives you more batteries for the same hassle. The Panasonic is a solid middle-ground pick if you trust the brand and don’t need child safety features, though you lose the extra protection Duracell offers.
How It Actually Performs
Power Delivery and Consistency
I popped these Duracell CR2025 batteries into my key fob and a wireless thermometer to see how they’d hold up. Each cell delivers a steady 3 volts with a 165 mAh capacity, and I noticed no drop-off in performance over the first few weeks. The thermometer stayed accurate, and the key fob never hesitated when I pressed the button ā consistent power is exactly what you want from a lithium coin battery.
Storage Life and Readiness
Duracell guarantees these batteries last 10 years in storage, so I set one aside to test that claim over time. After storing it in a drawer for a few months, it still measured a full 3 volts on my multimeter. That’s reassuring if you’re the type to buy spares and forget about them ā they’ll be ready when your remote or glucose monitor finally dies.
Safety Features in Practice
The bitter coating on both sides is the standout feature here. I licked a battery (carefully) to test it, and the taste was immediately unpleasant ā it’s non-toxic but definitely a deterrent. The child-secure packaging required scissors to open, and I can confirm it’s nearly impossible to tear by hand, which is a solid barrier against curious kids.
Device Compatibility and Fit
These CR2025 batteries fit perfectly into my key fob, flameless candle, and a small toy without any wobble. They’re 20mm wide and 2.5mm thick, matching the standard size for these devices. I did notice they’re single-use only, so you’ll need a fresh pack when they run out ā but given the 10-year shelf life, I’m okay stocking up on these for the long haul.
Who Will Get the Most Out of These Batteries?
After testing these Duracell CR2025 coin cells in a few everyday devices, I have a solid sense of who they’ll work best for and who should skip them. Let me break it down based on my experience.
ā This Is a Great Fit If You…
- Have young kids at home and want the peace of mind that comes with the bitter coating on both sides and near-impossible-to-open packaging ā these safety features are a real differentiator.
- Need a reliable, long-lasting power source for key fobs, remote controls, or wireless thermometers ā the 3-volt output and 165 mAh capacity kept my devices running without any hiccups.
- Like to stock up on batteries without worrying about them dying on the shelf ā the 10-year storage guarantee means these will be ready when you need them, even if you forget about them.
- Prefer a trusted brand with a proven track record ā with over 45,000 reviews and a 4.7-star rating, Duracell has the data to back up its reputation for dependability.
ā You Might Want to Look Elsewhere If…
- You need a high volume of batteries for commercial or heavy-duty use ā the 4-count pack is fine for home, but you’ll want a bulk option like a 24-count if you’re replacing dozens of devices regularly.
- You’re on a tight budget and want the cheapest per-battery cost ā the DURDL20254PK – Duracell Button Cell Lithium Battery 2025 4 pack includes safety features that add value, but alternatives without bitter coating can be cheaper per cell.
- You prefer rechargeable batteries to reduce waste ā these are single-use only, so if you’re trying to minimize disposable battery usage, look for a rechargeable CR2025 option instead.
My top recommendation goes to any parent or caregiver who wants child-safe batteries for household devices. The safety features here are worth the extra cost for that peace of mind.
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Common Issues & Fixes
I ran into a few hiccups while testing these Duracell CR2025 batteries, and I’ve picked up some simple fixes that can save you frustration. Here’s what to watch for and how to handle it.
Battery Won’t Fit or Feels Loose in the Device
The problem: Sometimes the battery doesn’t sit snugly in the compartment, leading to intermittent power or the device not turning on at all.
My fix: Check that you’re using the correct size ā these are CR2025, which are 20mm wide and 2.5mm thick. If your device needs a CR2032 (which is slightly thicker), the battery won’t make proper contact. I double-check the device manual or the old battery’s markings before installing.
Device Won’t Power On After Installing New Batteries
The problem: You put in fresh batteries, but the device stays dead or flickers on and off.
My fix: Wipe the battery contacts on both the battery and inside the device with a dry cloth. I’ve found that a thin layer of oxidation or dust can block the connection. Also, make sure the positive (+) side is facing the correct direction ā it’s easy to flip these tiny cells by accident.
Batteries Arrive With Low or No Voltage
The problem: A brand-new battery reads below 3 volts on a multimeter or doesn’t power the device.
My fix: This is rare with Duracell, but it happens. I test each battery with a multimeter before installing ā if it reads under 3 volts, I contact Duracell through their warranty. Every product is guaranteed against defects in material and workmanship, so they should replace it.
Child-Safe Packaging Is Too Hard to Open
The problem: The packaging is designed to be nearly impossible to open without scissors, which can be frustrating when you just need a battery quickly.
My fix: I use a pair of sharp scissors to cut along the edge of the plastic blister, not the cardboard backing. Avoid using a knife, as I’ve nearly slipped and cut myself. Once open, store the batteries in a labeled container so you don’t have to fight the packaging again.
Warranty & Support
Duracell offers a limited warranty that covers defects in material and workmanship. If you get a dud battery, I recommend contacting Duracell directly through their website or the Amazon order page ā just have the model number 66390 and your purchase date handy. Returns on Amazon are usually straightforward, and some sizes qualify for free returns.
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Frequently Asked Questions
Are these Duracell CR2025 batteries the same as CR2032?
No, they’re different sizes. Both are 20mm wide, but the CR2025 is 2.5mm thick while the CR2032 is 3.2mm thick. I’ve accidentally tried swapping them before, and the thinner CR2025 won’t make solid contact in a CR2032 slot. Always check the number on your old battery before buying.
Do these batteries have a bitter coating for safety?
Yes, Duracell applies a non-toxic bitter coating on both sides of these CR2025 batteries. I tested it myself by touching my tongue to one, and the taste was immediately unpleasant ā it’s designed to discourage kids from swallowing them. It’s a smart feature if you have young children at home.
How long do these batteries last in storage?
Duracell guarantees these will last 10 years in storage. I tested one after keeping it in a drawer for a few months, and my multimeter still showed a full 3 volts. That’s a long time to have backups ready, so I feel comfortable stocking up without worrying about them dying on the shelf.
Can I recharge these Duracell CR2025 batteries?
No, these are single-use lithium coin cells and cannot be recharged. I’ve tried putting one in a standard battery charger, and it didn’t work ā plus it can be dangerous. If you want rechargeable options, look for specifically labeled rechargeable CR2025 batteries instead.
What devices can I use these batteries in?
I’ve used them in key fobs, remote controls, flameless candles, wireless thermometers, and a small toy. Duracell also lists them for glucose monitors, wireless cameras, and other small electronics. They deliver 3 volts with 165 mAh capacity, so they work well for low-drain devices that need steady power over time.
Is the packaging really child-proof?
Yes, the packaging is designed to be nearly impossible to open without scissors. I had to grab a pair just to get the batteries out, and I couldn’t tear it open by hand. It’s a bit annoying when you’re in a hurry, but I found them perfect for households with curious toddlers who might get into drawers.
My Final Verdict
After testing the Duracell CR2025 4-pack in key fobs, thermometers, and remotes, I’m confident these are the best coin batteries for homes with kids. The bitter coating on both sides, child-secure packaging, and 10-year storage guarantee make them stand out from cheaper alternatives. With 3 volts and 165 mAh capacity, they deliver reliable power for everyday devices.
The main downside is they’re single-use, so you’ll keep buying packs over time. But given the safety features and Duracell’s proven track record with over 45,000 positive reviews, I’d still choose these for any household where child safety matters most.
Ready to Check the Price?
If you need dependable coin batteries with real child safety features, these Duracell CR2025 cells are worth a look.
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