LR44 Battery - Equivalents, Cross Reference Charts and Replacements

LR44 battery is very popular button/coin cell battery, often used in various electronic devices, toys, remote controls, watches, calculators etc. and is manufactured practically by all reputable brands.

LR44 battery is available in various chemistries, offering significantly different features, which is often very important for their applications. If You want to learn more about LR44/SR44 batteries and/or need to buy few of these, You have come to the right place.

On this page:

- LR44 Battery Dimensions

- Button/Coin Cell Battery Labels

- Alkaline LR44 vs. Silver-Oxide SR44 vs. Zinc-Air PR44 Battery

- CR1/3N or CR11108 Battery vs LR44/SR44 Battery Comparison

- 4LR44 or 4SR44 Battery vs LR44/SR44 Battery Comparison

- LR44/SR44 Battery Safety Concerns

- Latest Reviews, Articles and Guides    

LR44 Battery Dimensions

LR44 battery feature diameter of 11.6 mm (0.457 inch) and height of 5.4 mm (0.213 inch). 11.6x5.4 mm batteries are available in several chemistries, each one having slightly different features and to help the confusion, each manufacturer may use slightly different labels.

Fortunately, standard labels for 11.6x5.4 mm batteries include:

- Alkaline: LR44, LR1154, AG13, 76A, A76

- Silver Oxide: SR44, SR44W, SR44SW, SR1154, 157, 303, 357, SG13, AG13, S76, A76

- Zinc Air: 675, Blue Tab, ZA675, PR44, 7003ZD

- Mercury Oxide: MR44, MR1154

Some of the labels are used interchangeably among the chemistries, but manufacturers practically always clearly label the battery size and chemistry.       

Button/Coin Cell Battery Labels

Button/coin cell battery labels include letters and numbers.

Numbers identify the battery size:

- four digit code: 1154 - obviously, 11.6 mm diameter, 5.4 mm height,

- two digit code: 44 - code that identifies 11.6 mm diameter, 5.4 mm height battery.

So, LR44 or LR1154 battery is the battery with 11.6 mm diameter and 5.4 mm height.

First letter of the label identifies the battery's chemistry, as it is given in the following chart:

Thus, by reading button/coin cell battery label, one may determine its chemistry easily:

- 'LR' - alkaline battery, typically LR44 or LR1154,

- 'SR' - silver-oxide battery, typically SR44 or SR1154,

- 'PR' - zinc-air battery, typically PR44,

- 'MR' - mercury battery, typically MR44 or MR1154,

- 'CR' - lithium button/coin cell battery, for example, CR11108 or CR2032,

- 'BR' - lithium button/coin cell battery, for example BR2032.

Battery label may also contain letters after numbers. These letters indicate electrolyte type and battery drain:

- P: potassium hydroxide (KOH)electrolyte,

- S: sodium hydroxide (NaOH) electrolyte,

- SW: low drain type - used for mostly Sliver-Oxide batteries, for example SR44SW,

- W: high drain type - used for mostly Sliver-Oxide batteries, for example SR44W.

Due to the advances in chemistry, many manufacturers produce 'standard' SR44 battery suitable for both low- and high-drain applications, and label them by SR44SW, SR44W or they even se both labels.

To summarize, comparison of LR44 battery equivalents and replacements are given in the following chemistries cross reference chart:

Every battery chemistry has its pros and cons - which battery to choose depends on the device being used, availability of certain chemistries, personal needs and preferences and of course, their prices.

 Alkaline LR44 vs. Silver-Oxide SR44 vs. Zinc-Air PR44 Battery

Alkaline LR44 batteries have nominal voltage of 1.5 volts and cutoff voltage of 1.0 volt - as the battery is being discharged, output voltage drops more or less constantly.

Nominal capacity of LR44 batteries is in the 110-130 mAh range, although some LR44 batteries claim much larger capacity, comparable to silver-oxide batteries.

Actual capacity also depends on the cutoff voltage of devices being powered by these batteries, with some for example, watches having reliability issues when the battery voltage drops below 1.2 volts. Such and similar units should be powered by SR44 batteries.

Shelf life of LR44 batteries is usually around 3 years, but with the advances in chemistry, some LR44 batteries feature shelf life in the 4-5 years range.

LR44 batteries may easily be found at local hardware stores and online shops at rather affordable prices.

When compared with alkaline LR44 batteries, silver-oxide SR44 batteries feature slightly higher nominal voltage of 1.55 volts, and higher cutoff voltage of 1.2 volts - during discharge, output voltage drops, but not as nearly as the voltage of alkaline LR44 batteries.

Also, nominal capacity of silver-oxide batteries is larger and is usually in the 150-200 mAh range, but it often depends on the discharge currents - some low-drain models claim to have even more than 200 mAh capacity.

SR44 battery features very low self-discharge rate - SR44 models with 5-7 years shelf life are standard, with some models even having 7-10 years shelf life.

Although SR44 batteries are slightly more expensive than LR44 batteries, they are recommended choice for more sensitive devices like watches, medical instruments, car keys and similar.

Zinc-air PR44 batteries are commonly labeled as Blue Tab, PR44 or 675 batteries and are used almost exclusively for powering hearing aid devices.

Zinc-air batteries have somewhat lower initial voltage of 1.4 volts (sometimes also labeled as 1.45 volts) and cutoff voltage of 1.2 volts - during discharge, output voltage is rather constant.

Of all chemistries, zinc-air PR44 batteries feature the larges capacity in the 600-700 mAh range, which is practically 3-4 times better than the capacity of silver-oxide batteries.

But, zinc-oxide batteries have a 'little issue' - their electrolyte is 'wet' and they use oxygen from air (hence the label 'zinc-air') to produce electricity. Zinc-air batteries come with a colored tab (each zinc-air battery size has tab in different color) that has to be peeled off prior the use. As the tab is removed, air (oxygen) is let into the battery which starts to produce voltage/electricity in few minutes.

As the battery ages, its electrolyte dries and the battery dies. Also, if the battery gets discharged, it dies as well.

After the tab is removed, zinc-air batteries are able to operate for few weeks at most, although this depends on the battery model, ambient temperature and similar conditions.

Because of these features, zinc-air batteries are used as the batteries for hearing aid devices, including PR44, Blue Tab, or 675 batteries.

Regardless if You are looking for LR44, SR44 or PR44 batteries, batteries from reputable brands are always the best option, even if they do cost somewhat more - better safe than sorry. After all, such brands are for a good reasons called 'reputable'.

CR1/3N or CR11108 Battery vs LR44/SR44 Battery Comparison

CR1/3N or CR11108 battery is non-rechargeable lithium 3V battery featuring 11.6 mm diameter and 10.8 mm height. Also, CR1/3N or CR11108 batteries feature nominal capacity of 160-170 mAh, nominal voltage of 3.0 volts and cutoff voltage of 2.0 volts.

So, CR1/3N or CR11108 feature exactly double height of LR44/SR44 batteries and are mutually interchangeable - one CR1/3N or CR11108 battery for a pair of LR44/SR44 battery.

Actually, some people replace a pair of LR44 (3.0 V, 110-130 mAh) batteries with a single CR11108 battery.

A pair of SR44 (3.1V, 150-200 mAh) batteries comes with the performances very similar to CR11103 battery.

For more about CR11108 (CR1/3N) batteries, feel free to check our CR11108, CR1/3N, CR-1/3N, DL1/3N, 2L76 Battery Equivalents and Replacements article.

4LR44 or 4SR44 Battery vs LR44/SR44 Battery Comparison

4SR44/4LR44 batteries are standard small cylindrical batteries, featuring physical dimensions of 25.2 mm (0.99 inches) in height and 13 mm (0.512 inches) in diameter.

When compared with LR44/SR44 batteries (DxH, 11.6x5.4 mm), 4SR44/4LR44 batteries have slightly larger diameter and height. Most devices that use 4SR44/4LR44 batteries also support the use of 4 individual SR44 or LR44 batteries using battery holder/adapter.

Just like SR44/LR44 battery, 4SR44/4LR44 batteries also differ in chemistry and thus capacity and nominal voltages.

For more about 4SR44/4LR44 batteries, feel free to check 4SR44 and 4LR44 Batteries Equivalents and Replacements article.

LR44/SR44 Battery Safety Concerns

LR44/SR44 batteries are shiny objects, and look rather appealing to curious kids and pets that may swallow LR44/SR44 or any similar small batteries. Most manufacturers package LR44/SR44 and other smaller batteries in the packages labeled as 'kids and pets safe' - it means that even adult will have trouble opening the package and getting the battery out. However, don't ever estimate kids and pets when trying to get something that they want, especially if it is forbidden ...

Despite modern batteries not having mercury, cadmium or similar heavy metals or other dangerous pollutants, button/coin and similar batteries are very dangerous when swallowed - body liquids close the circuit between anode (negative) and cathode (positive) causing local electrolysis and buildup of various, very aggressive chemicals, including a sodium hydroxide (caustic soda) which damages the surrounding tissue rather quickly, causing serious injuries or even death.

So, if the LR44/SR44 or any other battery gets swallowed by the kid or pet (or even adult, but why would ...?!) call the emergency services right away and do as instructed (most often induce vomiting right away - just act as instructed).

Please, this is a serious warning, so act accordingly ...

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