18V ONE+ 4Ah Battery and Charger Kit

RYOBIs 18V 4Ahr Upgrade Kit keeps DIYers and pros ready to work on projects with fully charged batteries at all times. It provides users a 4Ahr battery that has up to 4X runtime and a Dual Chemistry Charger that can charge all Ryobis 18V ONE+ batteries in as little as 30 minutes.