This device allows users to add on the Solar Mod kit to any device that runs on AA or AAA batteries. Just turn the device over and let the sun's rays charge it. Hack any AA or AAA powered device to make it solar powered. Included: a flexible solar cell 4.8V with soldered metal connectors, mailable packaging and double -sided tape. Fun hack. Easy way to break into solar projects. NiMH batteries not included.