Best Cordless Tool Batteries
This guide compares cordless tool battery packs using listing specs such as capacity, voltage, pack count, warranty and compatibility notes. It is not based on hands-on testing.
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Tool batteries: voltage (12V, 18V/20V max, higher), amp-hours and what Ah means for runtime and weight.
Cordless tool batteries determine how long and how hard a power tool can work. Understanding voltage, amp-hours, and platform compatibility helps you choose replacements or spares with confidence. Start with the tool battery guide for the basics.
If you are new to cordless tools, begin by comparing the different battery platforms and what they mean for your existing gear. For related chargers and accessories, explore the batteries and chargers section.