We Earlier analyzed the initial design of the Cordless Sophisticated Waterpik, and even though we haven't formally tested the new version, we Notice that it now has a rechargeable lithium ion battery and comes with a magnetic charging cable that may be plugged right into a USB port. 1 Amazon https://electric-water-blaster62838.elbloglibre.com/26431827/5-easy-facts-about-water-blaster-described