After bringing home a haul of a dozen different brands of AA cells ... measures the voltage across a load every second until the battery reaches 0.2V. The elapsed time, as well as the voltage ...

DeWalt PowerStack batteries provide tools with even more energy and efficiency, plus are available in three different sizes.

Solid-state batteries are not a new technology. But until now, the battery industry has collectively agreed to only make them in very small sizes. Manufacturing SSBs for things like hearing aids ...