If you have a smartphone, it’s safe to say that at one point you’ve run out of battery and realized how you could barely function without it. Things aren’t going to change anytime soon, so whether you’re going on a day trip, a weekend trip, or a month-long adventure, make sure you’ve always got backup juice. You’ll likely need your phone to navigate, figure out where to eat or stay, or communicate with family and friends. A portable battery will relieve some of the stress that comes with knowing your battery is about to die and will help you reach your next destination (which hopefully has an outlet). Here are some of the best chargers to consider taking with you on your next adventure.