Ah Tool Battery

Are 2 Ah batteries good for power tools?

Not surprisingly, 2 Ah batteries are usually priced lower than those with higher Ah ratings, though that can also vary by manufacturer. And in case there's any question, the batteries can be used with most 18V, 20V, and 40V power tools. However, the higher voltage devices like those in Ryobi's popular 40V lineup may drain their power faster.

What does Ah mean on a battery?

Ah is an abbreviation for ampere-hour, or amp-hour. This describes the charge capacity of a battery, or how much current can be delivered at a constant rate as the battery is depleted over the course of one hour. For example, consider a hypothetical cordless power tool that continuously draws 1.0A of current.

What is a 4 Ah battery used for?

Like the 2 Ah power packs, 4 Ah batteries can also be used to power tools in the 18V, 20V, and 40V voltage range. Not surprisingly, 4 Ah batteries are often bigger in build than 2 Ah models, and they are more frequently used to power larger devices tabbed for heavy-duty jobs that require more extended periods of usage.

What does a higher Ah mean for a power tool?

Ah stands for ampere-hour and is a measure of a battery's capacity. You'll usually see this rating printed on the side of the battery, along with the output voltage. But what does a higher Ah even mean for your power tool? According to most manufacturers, a higher Ah is associated with a longer runtime.