PowerFilm AK-1 Assurance Solar Charger Accessory Kit Multiple PowerFilm accessories designed for battery charging RA-6....... Daisy Chain Accessory. Allows you to connect several PowerFilm chargers in parallel for increased current output (amps). By connecting multiple panels, you can achieve a combined output of up to 20 amps. RA-8....... 15' Extension Cord with alligator clips. Protect yourself from being stuck with a dead battery, thanks to the RA-8 extension cord, which can quickly and conveniently connected to a car or boat battery. Professional marine-grade components are ready to attach to your PowerFilm solar panel. RA-9....... Charge Controller rated 4.5 amps @ 12 volts. Regulate battery charge and protect from overcharging. The RA-9 features 100% solid state electronics. All power switching is done with MOFSETs - no mechanical relays are used. RA-11...... 15' Extension Cord with o-ring terminal connectors. The perfect solution for semi-permenent battery charging applications, the RA-11 features ring terminal ends plus an extra 15 feet of range.