When you head into the wilderness on a backpacking trip, the LightSaver Roll-Up Solar Charger keeps your phone charged. While you might prefer to be off the grid most of the time, this device helps you reach emergency contacts just in case. With a built-in 3,200 mAh battery, this solar smartphone charger can power up most smartphones 1.5 times. When you’re on the go for days on end, this compact solar panel could be a lifesaver. Additionally, this portable solar charger weighs just 4.9 ounces, so it doesn’t add bulk to your backpack or pannier. When you experience full sun, this panel will charge completely in six hours, and it takes just three hours to charge when plugged in. An ideal portable battery for serious adventurers, this device keeps mom from worrying too much.