UNI-PAC 15 15.5 Watt Portable Solar Charging Solar modules for remote applications must be tough, lightweight and easy to transport. UNI-PACs are designed for the challenge of the field. They provide power even with bullet holes or in partial shade. The UNI-PAC can be dropped, stepped on, packed and re-deployed, and will continue to operate. The UNI-PAC has been field-proven as dependable and easy to use for military units, trekkers, climbers and professional photographers. They depend on the UNI-PAC™ for field communications, emergency power and battery maintenance.The UNI-PAC 10, 15 and 30 are covered by a 5-year warranty. Unique and Durable The unique design of the UNI-PAC™ features a lightweight construction without glass or fragile crystalline to break, crack, or add extra weight. The tough nylon fabric covering allows the unit to be folded to a convenient book size, for easy storage and transport. The UNI-PAC™ 10 offers dual voltage charging for 12V and 24V, the UNI-PAC™ 15 and the UNI-PAC™ 30 are for 12V charging. The UNI-PAC™ was designed to meet military requirements for durability, performance and reliability. Tefzel (by DuPont) serves as a strong, long-lasting front cover. Individual solar laminates contain bypass diodes, making the UNI-PAC™ solar chargers tolerant of severe shadow or partial covering. Charging rate and voltage can even be adjusted to meet specific needs