NEW! All in one integrated power pack for Samsung Galaxy S4, now with 2A USB power out - charge your accessories while charging your phone. Ultra light weight version weighs only 69g. Case holds phone, 2500mah battery, and electronics. Includes external rapid charger. Phone slips into top of case, and the charger and battery are hidden behind phone. Solar module option re-charges anywhere in full sun. Easy to carry solution for extending S4 battery life.