About this site

Tool Battery Prices ranks official 18V cordless tool batteries by price per amp-hour, so you can see which pack gives you more capacity for the money. It covers DeWalt 20V MAX, Milwaukee M18, Makita 18V LXT, Ryobi 18V ONE+, and Craftsman V20 packs sold on Amazon.com.

How the ranking works

All five platforms use 18V nominal voltage, even when the marketing name says 20V. That means amp-hours can be compared directly. $/Ah is the total price divided by (amp-hours × the number of batteries in the pack). $/Wh is estimated from 18V × amp-hours when a watt-hour rating is not listed.

What is left out

The table does not include kits that come with a charger or a tool, used or renewed listings, third-party compatible packs, or other voltages such as 12V, M12, or FlexVolt.

About the prices

Prices were last checked on November 10, 2026, on Amazon.com in the United States. They can change, and tax or shipping is not included. A “From” price means more than one official option starts at that amount. The price Amazon shows at checkout is the one you pay.