This is the portable battery that attaches to a window and uses solar power to charge a smartphone or tablet. The device has a suction cup that allows you to mount it to a window in a car or plane and the built-in solar panel charges the internal 1,000 maH lithium-ion battery. A smartphone or tablet connects to the unit through its USB port (cable not included) and the device charges an iPhone 6 up to 44% and iPhone up to 56% on a full charge. The solar charger’s internal battery recharges in two hours via USB, it has five LEDs on the rim that indicate internal battery capacity, and it is only slightly larger than a hockey puck, allowing for unobtrusive storage in a carry-on or purse. Price $69.95
The Plane, Train, And Automobile Solar Backup Battery [7 gadgets]