Which power tool batteries are interchangeable?

They are only interchangeable between tools in the same range by the same manufacturer.
For example all Milwaukee M12 (12V) tools can use any M12 battery (they come in 2Ah, 4Ah, and 6Ah) and M18 (18V) tools can use M18 batteries but they are not interchangeable between the two voltages. They even connect in entirely different ways to make sure there’s no mistaking which one fits which tool.

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The battery of a power tool is generally not interchangeable with other power tools. However, depending on the type of power tool, some batteries may be interchangeable between different models. For example, some cordless drill batteries are interchangeable between DeWalt and Black & Decker models. It is always best to check the specifications of your power tool to determine if the battery is interchangeable. hail damage

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