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Green outdoors means not every solar backpacks products has to sit on your roof. Included with each green outdoors bag is a battery pack which stores any surplus power green outdoors generated so it is available when you need it not just when the sun is up. The green outdoors battery pack can also be charged using an AC off-grid charger or car charger(both included). green outdoors means you do not need to bring different adapters again for different green outdoors electronic devices if you have one solar backpacks system in the green outdoors bag. green outdoors outdoor vacation trail charger hiking vacations hiking off-grid bags battery mountain