Plan on being away from power for more than just the afternoon? The Mophie Juice Pack Powerstation Pro ($100) packs enough USB-ready juice — 6,000mAh — to keep your gadgets running for days without needing a "real" recharge, and thanks to its rugged aluminum and steel construction, you won't need to baby it when you're out on the trail. Just remember: just because you can keep your phone running for days doesn't
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