The R44 Silver Oxide Battery Cell Specifications

Written by brandon pierce
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The R44 Silver Oxide Battery Cell Specifications
Silver oxide batteries are often used to power watches. (watches image by Oleg Ivanov from

R44 silver oxide batteries provide excellent power sources in small devices that need long battery life in small packages. They are commonly used to power watches, thermometers, LED flashlights and laser pointers. Batteries in the R44 family are all small, round and flat.

Types of R44 Batteries

The LR44 is the most common of the R44 family. It provides 1.5 V and measures approximately 11.4mm in diameter. It is an alkaline battery and provides power by a chemical reaction between zinc and manganese dioxide. The SR44 looks exactly the same, but its design allows for a higher energy density through the use of silver oxide. This makes it capable of a more stable output over its lifespan. The PR44 is the last type. It introduces air into the chemical equation. The PR44 provides high power, but its reliance on air causes it to run out quicker.


The R44 line of batteries is used in devices that need consistent power for long periods of time. Hearing aids are an example of a device that benefits from the R44's specifications. Their size and shape makes them appropriate for small electronic devices and timekeeping devices.


A standard R44 alkaline battery has an average capacity of 150 mAh. The SR44 silver oxide battery increases this to 200 mAh. The PR44 can hold up to 600 mAh, but it loses power much quicker than its alkaline and silver oxide counterparts.


The R44 is a normal alkaline battery and can be disposed of as household waste. The PR44 only adds air to the chemicals, so it is considered household waste as well. The SR44 is classified as a hazardous waste due to its silver oxide composition. Check your town's regulations when disposing of an SR44 battery.

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