Battery Equivalents: AG13, SG13, LR1154, SR44, SR44SW, 303, 357, A76, LR44 

 September 19, 2021

By  Phil Borges

There are different types of batteries that people use in their daily lives. Different models have different voltages, milliamp hours, and so on. The most common battery is the AA battery which provides 1.5 volts and typically has a capacity of 2000mAh or more. But there's also AAA, C, D, 9V... With too many choices, it can be hard to know what type you need! To help you out, we've compiled a list of different types of batteries and their equivalents for easy reference.

Battery Equivalents: AG13/LR44/SR44/SR44SW/357

Button/coin cell batteries like AG13/LR44/SR44/SR44SW/357 are used in watches, calculators, and other small electronics.

The IEC standard is an international battery size designation, and it's necessary to know the code for many batteries. LR1154 are alkaline batteries, and SR1154 refers to silver-oxide cells.

Some manufacturers have their own names for these batteries, adding the IEC and other standard codes. A two-digit code used is LR44 (alkaline) or SR44 (silver oxide). The first letter indicates whether it's an alkaline battery or silver oxide; R=Alkali, S = Silver Oxide. These are followed by numbers that describe how many volts each size has in common with another.

Alkaline or silver-oxide are button/coin cell batteries with 11.6 mm in diameter and 5.4 mm in height and a capacity that depends on the used chemistry but can also be determined by cut-off voltage of the device.

Here are some pointers to help you remember:

  • If you're looking for a replacement battery for AG13 and SG13, it's best to know the difference between these two batteries. AG13 is alkaline, while SG13 is silver oxide. However, sometimes manufacturers mark their products with both labels, so make sure the one that says "Silver Oxide" on it has this designation near its name or description to avoid confusion.
  • Remember the battery codes. When you're trying to find out what kind of battery your small electronics device uses, the first thing you need is a code.

If the battery code starts with:

- for alkaline coin cell

- for silver-oxide

P - for zinc-air

M or N - for mercury-oxide. Please note that mercury's hazardous nature and toxicity in these batteries are no longer being used for commercial purposes.

If the battery code ends with:

- most likely, the battery has potassium hydroxide electrolyte content.

- this battery has a sodium hydroxide electrolyte

In some cases:

If the battery code does not end with either P or S, batteries are most like to be organic in composition.

W after the digit - these batteries have an IEC 60086-3 watch battery standard on their packaging. They usually comply with this specific criterion as well.

Differences: AG13/LR44/SR44/SR44SW/357

As mentioned earlier, mercury-oxide batteries are no longer commercially available or were phased out due to their mercury content that has been shown to be harmful.

Zinc-air batteries have had a low voltage output compared to alkaline counterparts (1.4 V vs. 1.5V). However, these battery types are capable of storing 600 or 700 mAh, which makes them ideal in devices with large power demands such as digital cameras and MP3 players, among others.

Silver-oxide batteries are like a better version of alkaline ones because they have 1.55 volts instead of the regular 1.5, and while it's being used, their voltage remains stable at around 12. Silver-oxide batteries are the best choice for powering smaller electronics. Alkaline batteries are cheaper and more versatile, but they don't have enough voltage to power such devices. You know that silver-oxide batteries are more expensive than alkaline ones, but it's worth the price difference when you consider their features and performance. In fact, in larger packages, there is hardly a cost difference at all between them.

Alkaline batteries are an excellent option for general use and small electronic devices. They're cheap, reliable, have a decent capacity of 110-130 mAh, depending on the cut-off voltage of your device.

AG13 (i.e., Eurobatt): Alkaline battery with 1.5V, 0.9V nominal and cut-off voltages, 130 mAh capacity.

LR44 (i.e., muRata): Alkaline battery with 1.5V, 0.9/1.2V nominal, and cut-off voltages, 130 mAh capacity.

SR44 (i.e., muRata): Silver oxide battery with 1.55V, 1.2V nominal, and cut-off voltages, 155 mAh capacity.

357 (i.e., Energizer): Silver oxide battery with 1.55V, 1.2V nominal, and cut-off voltages, 150 mAh capacity.

LR44/SR44/SR44SW: As a replacement for larger batteries

LR44/SR44/SR44SW batteries are much more versatile than you might think. They can be used to replace not just button 11.6x5.4 mm coin cells but also larger battery sizes too.

Lithium non-rechargeable CR11108 or CR1/3N batteries are typically used in watches, calculators, and children's toys. They feature 3.0 nominal voltage and capacity between 160 to 170 mAh, just as many LR44 SR44SR 44SW.

CR11108 or CR1/3N batteries are mostly used in cameras, calculators, and PDAs. These types of battery packs use one 3V lithium-ion battery that is popular for its power density to replace two weaker 1.5 volts LR44 alkaline cells with a nominal voltage of only 3 volts each.

The 4LR44 and the 4SR44 are cylindrical batteries that display their internal construction on their exterior label.

4LR44/4SR44 batteries are the equivalent of four LR44 or SR 44SW, joined together to create a battery with a nominal voltage of 6 volts. They typically have 110-150 mAh capacity for 4LR44 and 150-200 mAHD for 4SR440's. The dimensions of these types of batteries are 25mm in height and 13 mm in diameter.

4LR 44/ 4 SR 44 are used in some film cameras, flashlights but not all types, and medical instruments. While easy on your wallet, these have a long life span, so make sure you buy them for all those electronics that need power.

The use of shiny, attractive-looking batteries should be a warning to all parents. These small LR44/SR44 and other similar size batteries are often used in children's toys or household electronics like remote controls for televisions and even as key chain trinkets that kids have come to treasure dearly. But these harmless-looking batteries can cause serious harm if swallowed by curious pets or inquisitive young ones who will get into anything they want. This is why it is very important and necessary to keep them out of reach from little hands with lots more dangerous things around the house.

You might think that you are safe from the dangers of batteries because they don't have mercury or other heavy metals, but button and coin batteries pose a threat to your health if swallowed. When these types of cells come in contact with stomach acid, it can create an electric current which leads to chemical build-up inside the body (especially when there is high sodium hydroxide concentration). This dangerous build-up causes damage quickly and often results in serious injuries or death. If accidents happen and a child has swallowed one of these batteries, seek medical attention right away.

Frequently Asked Questions

What will happen if you mixed up batteries?

If you mix up two different battery types, the one with the lower voltage will discharge faster than it normally would. The mixed cells are likely to have a similar life span when charged and discharged at an equal rate.

Where can I go to find the correct battery for my watch?

Whenever you need a battery for your watch, get it from the manufacturer. It is always best to use the original battery that came with your watch. You might risk damaging your watch with a battery that is not the proper voltage or amperage rating.

How do I know if my flashlight uses LR44 or SR44 batteries?

You can find out which type of battery a flashlight needs by reading its packaging information. Your best action is always going to be purchasing it from a reputable battery seller.

How do I know if my watch uses SR44 or LR44 batteries?

If you're not sure of the battery your watch needs, either read the manual that came with it or contact the manufacturer for more information on this subject. It is always best to use the original battery that came with your gadget to avoid any issues.

What is the difference between a watch battery and an AA or AAA?

The most significant difference between both types of batteries is that they use different chemistries to generate power, meaning their chemical composition will be different too. They also have varying capacities, which means you'll need more AAs for specific tasks than what's required.

What are the long-term effects of swallowing button batteries?

If button batteries are swallowed, the person will experience a burning sensation in their throat and neck region. If this happens, seek medical attention as soon as possible because swallowing these types of cells can be fatal.


To some people, they may think that buying a cheap battery is the way to go. However, you will be spending more money in the long run because they expire faster and need replacing sooner than their pricier counterparts. Investing in one of these batteries from a reputable seller can save you time, headaches, and cash down the line.

You may be thinking that battery equivalents are something you only need to worry about if you’re a business owner. But the truth is, as a consumer, it pays to keep an eye on your own power usage and compare it with what different products can offer regarding recharge time or backup life. This way, when buying new devices like phones or laptops, you have some idea of how they will affect your ability to get through the day without needing more energy sources-like chargers, for those times when outlets aren't available.

About the author

Hi, I'm Phil Borges.. thanks for reading.. My wife says I can't shut up about batteries so to save my marriage I've started this blog .. where I'd be ranting about batteries! Please leave a comment if you have any questions, I'm happy to help!

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