Nova iPhone Charging Case For The iPhone 4/4s Fully charge your iPhones internal battery two or more times with the NOVA Case. NOVA Charging case charges via the included Mini 5-pin USB cable and maintains it's charge with the integrated soalr trickle charger. Durable, lightweight hard-shell construction with soft-touch grip sides. Adds up to an additional 20 hours of talk time or Web surfing.