Klein Tools Anderson Powerpole®/APP® to DC cable with an 8mm Barrel Plug is compatible with Klein Tools Portable Power Stations (Cat. Nos. KTB500, KTB1000) and Solar Panel (Cat. No. 29250). The 11.8-Inch flexible cord allows you to easily adapt your Solar Panel’s APP® output to your portable power station’s 8mm barrel plug charging input. Easily store the flexible cable in the pouch of Klein Tools Solar Panel.