If you’ve been using DeWALT 18-volt tools for many years, chances are they’re powered with older Ni-Cad or nickel-metal hydride batteries with posts on top that plug into the tool. Today’s lithium-ion batteries have slimmer profiles and better power-to-weight ratios than the older batteries, but their slide-on mounts don’t fit those older DeWALT tools. That is, until now. Coming this month, DeWALT will be rolling out its new 20V Max* Battery Adapter that can retrofit the latest battery technology to your older but still reliable DeWALT cordless tools. The compact batteries slide onto the bottom of the adapter, and then the adapter’s top post fits into your tools like the original batteries do. This enables you to choose from among DeWALT’s entire line of 20V Max* batteries, including 1.3Ah, 1.5Ah, 2.0Ah XR, 3.0Ah, 4.0Ah XR® and 5.0Ah XR®. If you already have some of the newer lithium-ion 20V Max* batteries that came with other tools, the adapter will be available as a stand-alone unit (DCA1820) for $39. Or, buy the adapter packaged with two 20V Max* 2.0Ah batteries and a charger (DCA2203C) for $149. The latter option will also enable you to begin investing in DeWALT’s family of “bare” 20V Max* tools, of which there are more than 70 options. Bare tools are more affordable than kitted versions that each come with a charger and a battery or two. Find the adapter wherever DeWALT products are sold, later in October. It includes a 3-year limited warranty, 90-day money-back guarantee and a 1-year free service contract.