Energizer CR2450 Lithium Coin Batteries Review & Verdict
When one Reddit user summed them up simply as "they are legit brand new Energizer batteries and work great", it captured the no-nonsense appeal of the Energizer Lithium Coin Batteries CR2450 (Pack of 4). With scores averaging 8.0–9.1/10 across platforms, these single-use lithium cells promise long shelf life, stable voltage, and compatibility with a wide range of devices — and for many buyers, they deliver exactly that.
Quick Verdict: Yes — reliable choice for most small electronics, but be ready for frustrating packaging and occasional lifespan complaints
| Pros | Cons |
|---|---|
| Proven brand reliability | Very difficult-to-open blister packs |
| Long shelf life (up to 10 years reported) | Some reports of premature battery depletion |
| Strong voltage stability | Rare packaging odor complaints |
| Works in wide range of devices | Few customers noted defective units |
| Good value for a branded product | Expiration may be closer than expected in some packs |
| Widely available online and in-store |
Claims vs Reality
Marketing materials boast a 10-year shelf life, “stable and reliable energy output,” and performance in extreme temperatures from -22°F to 140°F. On paper, these are reassuring for anyone using the CR2450 in critical devices like medical equipment or security systems.
Digging deeper into user reports, the shelf-life claim mostly holds true for unopened packs — “I know that I will have a fresh battery ready to go when I need to replace it in my welding helmet,” noted one Amazon buyer. However, several users on Fakespot contradicted the long-life narrative, describing devices reporting low battery after short-term use even though cells were “not close to the expiration date.” This suggests occasional quality variances between batches.
The claim of voltage stability found support among BestViewsReviews’ analysis, which highlighted durability and reliability. Reddit feedback aligned, with comments like “it’s this or Duracell, everything else I’d buy only if I can’t find these two brands.” Yet a few outliers reported inconsistent performance, particularly in intermittent-use devices such as garage door sensors.
Cross-Platform Consensus
Universally Praised
Reliability emerged as the most consistent praise. A verified Amazon customer wrote: “Appears to be a real Energizer battery… they work.” For smartwatch users and remote key fob owners, this consistent output means not worrying about unexpected shutdowns. The compatibility list — from calculators to automotive remotes — also fuels loyalty; one Trustpilot reviewer emphasized that they reached for Energizer because “everything else I would buy if I can't find these two brands.”
Value for money was another recurring theme, with Reddit users citing them as a “bargain” and eBay listings showing aggressive pricing for multi-packs. Buyers using them in professional tools or medical devices often stocked up, relying on the promise of long life and stability.
Common Complaints
The packaging generated the loudest frustration. Multiple buyers described blister packs as “really hard to get the battery out” and requiring scissors. For elderly users or those with dexterity issues, this safety-oriented design (child-resistant) becomes a barrier. A few noted a “smell” upon opening, although these were rare.
Performance complaints appeared too: “The same sensor now reports low battery… they were only turned on infrequently,” said one dissatisfied user. These premature failures were reported across Amazon and Trustpilot, affecting intermittent-use devices more than continuously powered ones.
Divisive Features
The long shelf life claim split opinion. Enthusiasts praised it — “first time in 3 years I had to change this battery” — treating them as a stock-and-forget solution. Others doubted the need for such an extended lifespan if occasional batches underperform. Extreme temperature performance is promoted in marketing, but consumer anecdotes rarely tested these limits, leaving this claim unconfirmed.
Trust & Reliability
Trustpilot analysis detected possible review manipulation on Amazon listings, with Fakespot suggesting some historical anomalies in review counts. Despite this, 66.9% of reviews were deemed reliable. The Energizer brand itself remains a strong trust anchor: “They work well and last a lot longer than generic brand batteries,” as Quora contributors put it.
Long-term durability stories underline that for many, these cells can sit unused for years and still function. One Redditor recounted using a CR2450 after several years in storage with no noticeable loss of power — aligning with the official 10-year shelf life. However, as seen with reported failures, batch quality seems key.
Alternatives
Duracell’s CR2450 often crops up as the direct competitor, chosen primarily for similar reliability and brand trust. Panasonic’s CR2450 offers comparable specs and pricing, as seen in online listings. Users loyal to Energizer cite fewer leak incidents compared to generics, while others switch to alternatives when irritated by the blister-pack struggle.
Price & Value
At around $10.99 for a 4-pack on Amazon and $9–$14 across eBay listings, these occupy a mid-range price point for branded coin cells. Bulk buyers on eBay secure per-unit prices far below retail, especially for expiry dates beyond 2029. A verified Amazon user praised the “very good price” and fast shipping, making Amazon a popular choice for convenience.
Buying tips from community members include checking expiry dates before purchase, favoring multipacks with later dates (2030+), and avoiding small lots from less-known sellers to reduce the risk of older stock.
FAQ
Q: Do these batteries actually last 10 years in storage?
A: Many users confirm unused cells worked years later, supporting the shelf life claim. However, occasional reports of premature depletion suggest buying from reputable sellers for fresher stock.
Q: Are they safe for use in medical devices?
A: Yes, they’re marketed for medical uses like glucose monitors, and users report stable performance. Always check device requirements before installation.
Q: Why is the packaging so hard to open?
A: It’s child-resistant by design. Many customers complain it requires scissors, which can frustrate frequent battery changers.
Q: How do these compare to Duracell’s CR2450?
A: Performance and lifespan are similar. Some buyers prefer Energizer for brand loyalty, others opt for Duracell citing easier packaging.
Q: Can they operate in extreme temperatures?
A: Official specs claim -22°F to 140°F operation. User feedback hasn’t widely tested these conditions, so real-world performance in extremes is less documented.
Final Verdict: Buy if you need reliable, long-lasting coin cells for critical devices and value brand trust. Avoid if awkward packaging is a deal-breaker or if you need guaranteed flawless batch performance. Pro tip from the community: stock up on later-expiry multi-packs to maximize shelf life and value.
