Back at CES, tool company Black and Decker unveiled its Smartech batteries that use an app to keep tabs on power levels and more. Just in time to help with those summer projects, the accessories are ready for use. If you're looking to give them a go, there are a couple of options for putting them to work. First, you can add the Smartech batteries to any 20V Black and Decker Max power tools and small vacuums that you already own. Each of the Bluetooth-equipped packs will set you back $69.