Battery 303/357 Equivalent: A Comprehensive Guide

Energizer 357/303 Silver Oxide Button Battery, 3Pack
Energizer 357/303 Silver Oxide Button Battery, 3Pack from


When it comes to powering small electronics and devices, batteries play a crucial role. One such battery type is the 303/357 battery, which is commonly used in watches, calculators, and other compact gadgets. In this article, we will explore the equivalent options available for the 303/357 battery, providing you with a comprehensive guide to make informed decisions.

Understanding the 303/357 Battery

The 303/357 battery, also known as SR44, SR44W, or SR44SW, is a silver oxide button cell battery. It has a voltage of 1.55V and a capacity of approximately 150mAh. This battery is widely used due to its compact size and long-lasting power.

Equivalent Battery Types

There are several equivalent options available for the 303/357 battery:

1. SR44

The SR44 battery is the direct equivalent of the 303/357 battery. It has the same voltage, capacity, and dimensions. You can easily replace a 303/357 battery with an SR44 battery without any compatibility issues.

2. AG13

The AG13 battery, also known as LR44 or A76, is another equivalent option for the 303/357 battery. It has a slightly lower capacity than the SR44 battery but provides a similar voltage. AG13 batteries are widely available and cost-effective.

3. 357/303-1W

The 357/303-1W battery is another alternative for the 303/357 battery. It has similar specifications and can be used interchangeably. However, it may not be as readily available as the SR44 or AG13 batteries.

Choosing the Right Equivalent Battery

When selecting an equivalent battery for your device, it is essential to consider the following factors:

1. Voltage

Ensure that the equivalent battery you choose has the same voltage as the original 303/357 battery. Using a battery with a different voltage may damage your device or result in improper functioning.

2. Capacity

Consider the capacity of the equivalent battery. While slight variations are acceptable, a significantly lower capacity may lead to reduced battery life.

3. Size and Compatibility

Check the dimensions of the equivalent battery to ensure it fits your device properly. Additionally, verify its compatibility with your device by referring to the manufacturer’s specifications.


When it comes to replacing the 303/357 battery, there are several equivalent options available, including the SR44, AG13, and 357/303-1W batteries. Consider factors such as voltage, capacity, size, and compatibility to make an informed decision. By choosing the right equivalent battery, you can ensure optimal performance and longevity for your device.