If your dog’s collar tracker keeps dying mid-walk, you need a battery that actually holds up. I’m talking about the best CR2016 lithium coin battery for a pet collar that won’t quit—one that delivers consistent 3V power and doesn’t leak after a few rainy days outside. After testing three strong contenders, I found clear winners for different needs.
I picked these three based on three things: real-world voltage stability under constant use, safety features like child-resistant packaging, and how many you get per pack since pet collars eat through them faster than you’d think. Each one here passed my “won’t quit” test in a different way.
Quick Comparison: best CR2016 Lithium Coin Battery for a pet collar that won’t quit
| # | Product | Best For | Key Spec | Price |
|---|---|---|---|---|
| 1 | Philips CR2016 5 Pack Top Pick |
Long-lasting collar power | 10-Year Shelf Life | Check Price → |
| 2 | Energizer 2016 2 Pack Safety Choice |
Child-proof collar batteries | 4.7 Stars (8,741) | Check Price → |
| 3 | Duracell 2016 2 Count Amazon’s Choice |
Reliable key fob backup | 4.6 Stars (27,502) | Check Price → |
How I Selected These Products
I started by looking at voltage consistency and shelf life since a dead battery on a pet collar is the worst. Every battery I considered had to be a genuine CR2016 3V lithium cell from a brand with a solid track record.
Then I compared how many batteries you get per pack versus the overall value. A 5-pack beats a 2-pack for multi-collar households, but only if each individual cell holds up over months of use.
Finally I dug into real user reviews, focusing on complaints about early failure or leaking. I only kept products with thousands of ratings and a clear pattern of reliability in devices like pet collars and remotes.
Best Overall
Philips CR2016 Battery 5 Pack
10-Year Shelf Life | Durable Leak-Proof Design | 3V Lithium | 5 Batteries | 4.4 Stars
- LONG-LASTING PERFORMANCE: The Philips 2016 battery delivers reliable power...
- HIGH ENERGY CAPACITY: With up to 70% more power than standard coin cells...
This is the one I grab first for my own dog’s collar. The Philips CR2016 Battery 5 Pack gives you five cells with a 10-year shelf life, so you can stash extras and forget about them. The leak-proof design is a huge deal for pet collars that sit against damp fur or get caught in the rain.
This pack is best for anyone who wants to buy CR2016 batteries once and not think about them for years. The only catch is the rating count is lower than the other two options here at 135 reviews, so there’s less long-term feedback to go on.
✅ Pros
- 5 batteries per pack means fewer reorders for multi-collar homes
- 10-year shelf life lets you stockpile without worry
- Leak-proof design protects your pet’s collar electronics
- 2K+ bought in the past month shows strong demand
❌ Cons
- Only 135 ratings, so the feedback pool is smaller than competitors
- No child-safety packaging like some other brands offer
Safety Choice
Energizer 2016 Batteries (2 Pack)
3V Lithium | 3-in-1 Child Shield | 4.7 Stars | 8,741 Ratings | 7K+ Bought/Month
- 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 2016 Batteries (2 Pack) is the most trusted option on this list with over 8,700 ratings and a 4.7-star average. I like the 3-in-1 Child Shield packaging because if you have kids around, those tiny coin cells are a serious choking hazard. These batteries hold voltage well in pet collars I’ve tested for weeks straight.
This is the best pick for households with small children or pets that chew. The downside is you only get two batteries per pack, so if you have multiple collars or trackers, you’ll be reordering more often than with the Philips 5-pack.
✅ Pros
- 4.7 stars from 8,741 ratings — the most proven option here
- 3-in-1 Child Shield packaging for safety around kids
- 7K+ bought in the past month shows massive popularity
- Consistent 3V output I verified in my own collar tests
❌ Cons
- Only 2 batteries per pack means frequent reordering
- No leak-proof claim like the Philips offers
Amazon’s Choice
Duracell 2016 3V Lithium Coin Batteries 2 Count (Pack of 1)
3V Lithium | CR2016 | 4.6 Stars | 27,502 Ratings | Amazon’s Choice | 8K+ Bought/Month
- COMPATIBLE DEVICES: Powers car key fobs, remote controls, medical devices...
- CHILD SAFETY FEATURES: Duracell CR2016 features child safety design to help...
The Duracell 2016 3V Lithium Coin Batteries 2 Count is the most-reviewed battery here by a landslide with over 27,500 ratings and a 4.6-star average. It’s labeled Amazon’s Choice and 8K+ people bought it last month, so you know it’s a reliable fallback. I’ve used these in key fobs and collars, and they deliver consistent power until the very end.
This is best for someone who trusts the Duracell name and wants a proven performer with tons of user feedback. The limitation is the same as Energizer — only two batteries per pack — and there’s no child-safety packaging or leak-proof claim to speak of.
✅ Pros
- 27,502 ratings — the most customer feedback of any option
- Amazon’s Choice badge signals strong performance and returns
- 8K+ bought in the past month shows massive trust
- Reliable 3V output I’ve used in multiple devices without issues
❌ Cons
- Only 2 batteries per pack limits value for multi-device users
- No child-safety or leak-proof features mentioned
What to Look for in CR2016 Lithium Coin Battery for a pet collar that won’t quit
Picking the wrong CR2016 lithium coin battery for a pet collar that won’t quit usually means your dog’s tracker dies on a rainy walk or the battery leaks and ruins the collar. I’ve seen people grab the cheapest option only to replace it a month later, which costs more in the long run. Here’s what I actually check before buying.
Shelf Life
This is the first spec I look at because a battery that sits in your drawer for a year should still work when you need it. Most quality CR2016 cells advertise 5 to 10 years of shelf life, and I always go for the longer end of that range. A 10-year shelf life means you can buy a multi-pack and not worry about them dying before you even open the package.
Leak-Proof Design
Pet collars get wet, sweaty, and muddy, which is the perfect recipe for battery corrosion. A leak-proof design prevents that white crusty buildup that can ruin the contacts inside your collar’s battery compartment. I won’t put a battery in my dog’s collar unless the manufacturer specifically mentions leak resistance.
Child Safety Packaging
Coin cell batteries are a serious choking hazard for kids and pets, so the packaging matters more than you’d think. Some brands use a 3-in-1 Child Shield design that makes it harder for little fingers to open. If you have small children in the house, this feature is non-negotiable.
Voltage Consistency
All CR2016 batteries are 3V lithium cells, but not all of them hold that voltage steady under load. A battery that drops voltage early will make your pet collar’s tracker give false readings or stop working entirely. I look for brands with a proven track record of maintaining full voltage through the battery’s life.
Pack Quantity
How many batteries come in the pack affects both convenience and value. A 2-pack works fine if you only have one collar, but a 5-pack saves you from running to the store every few months. Think about how many devices in your home use CR2016 batteries before deciding on pack size.
My Shortcut Advice: Always choose a battery with at least a 5-year shelf life and leak-proof design for pet collars — those two specs alone will save you the most headaches and money over time.
Frequently Asked Questions
What is the best CR2016 lithium coin battery for a pet collar that won’t quit?
In my testing, the Philips CR2016 Battery 5 Pack is the top pick because it combines a 10-year shelf life with a durable leak-proof design. You get five batteries in one pack, which means fewer reorders and more peace of mind. The Energizer 2016 Batteries (2 Pack) is a close second if child safety is a concern thanks to its 3-in-1 Child Shield packaging.
How long will a CR2016 battery last in a pet collar?
That depends on the collar’s power draw, but most pet trackers and bark collars use very little juice. A quality CR2016 battery from a brand like Duracell or Energizer typically lasts 3 to 6 months in a standard collar. The Philips 5-pack’s 10-year shelf life means the spares you buy today will still be fresh when you need them.
Is the Philips CR2016 Battery 5 Pack worth buying over a 2-pack?
Absolutely, especially if you have multiple collars or other devices like car remotes and sensors that use CR2016 cells. You get five batteries for roughly the same per-cell cost as the 2-pack options, and the leak-proof design adds protection for electronics that sit against your pet’s skin. The only trade-off is the smaller review count at 135 ratings compared to Energizer’s 8,741.
What’s the difference between a CR2016 and a CR2032 battery?
The main difference is thickness — a CR2016 is 1.6mm thick while a CR2032 is 3.2mm thick, so they are not interchangeable in most devices. Both are 3V lithium coin cells, but the CR2032 holds about double the capacity. Always check your pet collar’s manual to confirm it specifically requires CR2016 before buying.
Can a CR2016 battery leak and damage my pet’s collar?
Yes, standard coin batteries can leak over time, especially in humid or wet conditions like a pet collar experiences. That’s why I specifically recommend the Philips CR2016 Battery 5 Pack, which has a durable leak-proof design to prevent corrosion. The Energizer and Duracell options don’t advertise leak-proofing, so be more careful with those in damp environments.
How many CR2016 batteries come in the Energizer 2016 Batteries (2 Pack)?
The Energizer 2016 Batteries (2 Pack) comes with exactly two CR2016 3V lithium coin cells in child-safe packaging. It’s a solid choice for a single collar, but you’ll need to reorder sooner than with the Philips 5-pack. Over 7,000 people bought this pack last month, so it’s clearly a popular option for quick replacements.
Is the Duracell 2016 3V Lithium Coin Battery a good choice for pet collars?
Yes, it’s a reliable option with over 27,500 ratings and a 4.6-star average, making it the most reviewed battery on this list. It works fine in pet collars, key fobs, and car remotes, and it’s labeled Amazon’s Choice for good reason. The only downside is you get just two batteries per pack with no leak-proof or child-safety features mentioned.
Will a CR2016 battery work in any pet collar?
Not necessarily — you need to check your collar’s manual to confirm it takes a CR2016 specifically. Some collars use CR2032 or even smaller coin cells like CR1620. If your collar requires a CR2016, any of the three options here will work, but I’d pick the Philips 5-pack for the leak-proof design and longer shelf life.
My Final Verdict
After testing all three, the Philips CR2016 Battery 5 Pack is my clear winner for a pet collar that won’t quit. Its 10-year shelf life means you can stock up without worry, the leak-proof design protects your collar’s electronics, and five batteries per pack beats the two-pack competition hands down. The Energizer 2016 Batteries (2 Pack) is the safest choice for homes with kids, and the Duracell 2016 3V Lithium Coin Batteries are the most proven option with over 27,000 ratings.
If you’re still on the fence, here’s my simple rule: get the Philips 5-pack if you want the best long-term value and leak protection for your pet’s collar. If child safety is your top concern, grab the Energizer 2-pack. And if you just need a reliable single replacement fast, the Duracell 2-pack won’t let you down.
Top Pick: Philips CR2016 Battery 5 Pack
- LONG-LASTING PERFORMANCE: The Philips 2016 battery delivers reliable power...
- HIGH ENERGY CAPACITY: With up to 70% more power than standard coin cells...
Buy this if you want the best overall value with leak-proof protection and five batteries that last up to 10 years on the shelf — perfect for multi-collar homes.
Runner-Up: 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...
Choose this for the 3-in-1 Child Shield packaging and unbeatable 4.7-star rating from over 8,700 verified buyers — safety first for homes with kids.
Also Great: Duracell 2016 3V Lithium Coin Batteries 2 Count
- COMPATIBLE DEVICES: Powers car key fobs, remote controls, medical devices...
- CHILD SAFETY FEATURES: Duracell CR2016 features child safety design to help...
Grab this if you trust the Duracell name and want the most customer-reviewed option on the market — 27,500 ratings don’t lie.