This portable backup battery will charge your phone six times. That should say enough right there. It’s also water, snow, and shock-proof, which means it’ll handle hard bails better than most bodies. High-power ports detect the most efficient charge speed for phones, whether used on Android or iOS.
We used this bad boy on multi-day trips to charge numerous devices without having to rejuice. That toughness comes at a weight cost, though – at 10.5 ounces, testers occasionally noticed the extra weight in their packs. And make sure you charge that bad boy in advance; we recommend plugging it in the night before a trip to make sure you get the juice needed for all six charges.