inputs.text: fuse 4watt charge v39 battery excellent cyclotouring - used two voltaic v39 batteries several multi day bike toured keep iphone 4 ipad camp lights bike lights charged kit includes cables needed make best use charge need device specific usb cable apple products case water resistant dust dirt proof good compartmentalization batteries cables adaptors stuff includes set strap loops buckles attaching pack panniersbesides touring camping used daily charging usb capable electronics since upgraded fuse 10watt charger v60 battery chafing macbook pro road not recharged usb device wall wart almost two years course charging rate vary available sunlightvoltaic customer support extrehemely good maintain complete web site company blog numerous customer projects discussions well worth look