The Voltaic 1004 solar powered messenger is reinforced and padded to carry and protect a laptop. It has large zipped pockets for documents and multiple small pockets for electronic devices. Ideal for use in town or as a travel bag. The solar panels are waterproof, scratch resistant, and UV resistant. They use ahigh efficiency monocrystalline cell. The three panels operate independently to generate up to 4 watts of power. This is double the power of typical solar chargers and enough to charge most portable consumer electronics (other than laptop computers). See typical charging times listed below. The substrate is an aluminum / plastic composite, specifically designed to be strong and lightweight. They can easily stand up to typical outdoor use including being dropped and leaned on. The panels are mounted in a flexible fabric sleeve. They articulate with the bag, which means it doesn't feel rigid or restrictive. Even if you manage to break one, which would probably take a conscious effort, they can easily be removed and replaced

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