Portable Solar Backup Battery is a battery that attaches to any window of a car, train or a plane and utilizes solar power to charge your devices like smartphone and tablet. The item features a suction cup that permits you to attach it to a window while the built-in solar power panel charges the inner 1,000 maH lithium-ion battery.
On the road, you can connect your mobile phone or tablet to the device by means of its USB port while you drive or take a nap. The charger’s internal battery recharges in 2 hours through USB. It also features 5 LEDs on the rim that display the remaining internal battery capacity. Additionally, it is lightweight, allowing you to store it in your purse or bag.