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What is the Difference Between 123 and 123a Battery?

123 and 123a are very similar to each other and used for the same purpose. The only difference between the two is size and capacity but have the same power 3V and same chemical composition.

The main differences between 123 and 123a is their dimensions. 123 is L=46mm, D=26mm while 123a is L=34.5mm. D=17mm. This means that 123 has 11mm more capacity than 123a, thus delivers better performance and more power than 123a. One is lighter the other is more powerful.

123 and 123a are compact, lightweight cells with relatively large voltage. They are ideal for wide applications that require tons of power but require small packages such as digital cameras, illumination equipment, home automation, wireless security equipment, tactical equipment, and more.

Similarities between 123 and 123a

These two batteries are very similar to each other. Below is a detailed breakdown of their similarities.

-They have the same power (3V) and the same chemical composition.

-They are all made of lithium

-They are all lightweight, compact, and fairly high in voltage, thus ideal for devices that require more power and capacity such as digital cameras, wireless security equipment, home automation, and more.

-They are all made from reputable manufactures such as Panasonic, Duracell, energizer, and Royavoc which have proven beyond doubt to manufacture high quality and durable cells.

 

Differences

The only differences between 123 and 123A are their duration and dimensions, which gives them different performance. These two batteries can last for up to 5 years depending on the manufacturer, capacity, and power of the battery

Now let’s break down their differences.

One of the main differences between 123 and 123a is their dimensions. 123 is L=46mm, D=26mm while 123a is L=34.5mm. D=17mm. This means that 123 has 11mm more capacity than 123a, thus delivers better performance and more power than 123a. That is why 123 is widely used in high-performance equipment such as flashlights, wireless security equipment, and digital cameras.

Another major difference between the two is their weight. Since 123 has more capacity, it is generally heavier than 123a. 123 weighs 16.5 grams while 123a weighs 16.0 grams. This means that 123a is lighter and more compact than 123.

 

Detailed specs of each cell

123

Dimension: L=46mm, D=26mm

Nominal voltage: 3.0V

Classification: lithium

Typical capacity: 1500mAh

Chemical system: lithium /manganese dioxide

Weight: 16.5 grams

 

123a

Dimension: L=34.5mm, D=17mm

Nominal voltage: 3.0V

Classification: lithium

Typical capacity: 1300mAh

Chemical system: lithium /manganese dioxide

Weight: 16.0 grams

 

 

Pros and cons

123

Pros

  • High capacity, powerful

  • Durable

  • More efficient and support high-performance devices

Cons

  • Quite bulky

  • Consumes more space

123a

Pros

  • Consumes less space

  • Less bulky

Cons

  • Less efficient

  • Shorter life span

 

123 vs123a, which one is better

It depends which what you want. For instance, if you are looking for a battery that is lightweight and compact, then 123a is a great choice for you. On the other hand, if you are looking for durability, more power, and capacity, then 123 is the clear winner.