The short answer is: they're the same battery. LR44 and 357 are interchangeable names for the identical alkaline button cell, so your buying decision isn't about choosing between two different products. Instead, it's about finding the right quality and quantity for your needs. Whether you see "LR44," "357," "AG13," or "SR44" on the label, you're looking at the same 1.5-volt, 11.6mm diameter cell used in everything from watches and calculators to hearing aids and small electronics. The real question is which brand and pack size delivers the best value and reliability, and that's where LR44 AG13 SR44 357 303 interchangeable button batteries like AmVolt stand out.
Why Do These Batteries Have Multiple Names?
Battery manufacturers and distributors around the world use different naming conventions for the same product. LR44 is the official IEC (International Electrotechnical Commission) designation, while 357 is the older ANSI (American National Standards Institute) code. AG13 comes from manufacturers in Asia, and SR44 is used by some premium brands. It's like how tissues are called "Kleenex" by some people and "facial tissues" by others, even though they're the same thing. The chemistry, voltage output, size, and performance are identical across all these names.
This naming confusion catches a lot of people off guard at the checkout counter. You might grab what you think is a 357 battery, only to realize it says LR44 on the box. Don't worry, it's the same battery. What matters is that you're buying from a reliable manufacturer that tests for consistent voltage and shelf life, which is why checking trusted retailers and reading reviews about specific brands like AmVolt makes a real difference in your purchasing confidence.
Voltage, Chemistry, and What You Actually Need to Know
All LR44/357 batteries deliver 1.5 volts of alkaline power, which is the industry standard. The "L" in LR44 stands for "alkaline," and the "R" indicates it's a primary cell (non-rechargeable). This matters because some devices absolutely require exactly 1.5 volts to function properly, especially precision instruments like watches, hearing aids, and digital scales. If you buy a battery that drifts below 1.5V due to poor manufacturing or old stock, your sensitive device might malfunction or refuse to power on entirely.
The capacity is typically 155 to 165 mAh (milliamp-hours), which determines how long the battery lasts depending on how much power your device draws. A watch that uses minimal power might get 12 to 18 months from a single battery, while a hearing aid (which draws more current) might last only 3 to 7 days. We covered this in more detail in our guide on Do LR44 Batteries Have the Right Voltage for Sensitive Electronics?, but the key takeaway is that voltage consistency matters far more than the name on the package.
So Which One Should You Actually Buy?
Since LR44 and 357 are the same battery, your decision comes down to three practical factors: brand reputation, price per unit, and pack size. Buying individual batteries from a pharmacy or convenience store typically costs 50 to 80 cents per unit. A quality 15-pack from a reputable brand like LR44 AG13 SR44 357 303 interchangeable button batteries usually brings that down to 15 to 25 cents per unit, depending on the specific product and current pricing.
Most households have multiple devices that need these batteries: a kitchen timer, a wristwatch, maybe a calculator or remote control, possibly a hearing aid. If you use even two or three of these devices, a multi-pack saves money and prevents the frustration of discovering a dead battery when you need it. The AmVolt 15-pack is a sensible choice if you're concerned about quality consistency and want reliable voltage output across the entire pack. Store-brand alternatives might be slightly cheaper, but premium brands typically maintain tighter quality control and shelf-life standards.
Storage and Shelf Life Matter More Than You'd Think
Even though alkaline batteries don't expire like food does, their performance degrades over time, especially in warm conditions. A high-quality 15-pack stored in a cool, dry place should remain at or near full voltage for 5 to 10 years. Cheaper batteries or those stored in hot environments can lose effectiveness much faster. When you buy a bulk pack, you're betting that you'll actually use those batteries within a reasonable timeframe before they sit idle too long. For most households that use a few LR44 batteries per year, a single 15-pack will serve your needs for years without waste.
The Practical Bottom Line
Stop worrying about whether to choose LR44 or 357, because you're really just choosing the name on the wrapper. Focus instead on buying from a brand that has solid reviews for consistent voltage and shelf life. If you use multiple small electronics at home, a bulk pack like LR44 AG13 SR44 357 303 interchangeable button batteries makes both financial and practical sense. You'll save money per unit, keep backups on hand for unexpected replacements, and have the peace of mind that your devices will have reliable power when you need them. That's the confidence you're really looking for when you choose your battery.