With built-in Li battery inside solar charger, which adopts the effective Silica solar  panel, is a kind of backup source for digital products. Under sunlight, the built-in  battery can charge many kinds of electronic products. It can also charge built-in Li  battery for cell phones and carry-on digital products at night or inside the house.
Specification:
● Solar energy battery: power 0.65W, Voltage 5.5V
● Charging output of Voltage: 5.6 ± 0.1 V
● Charging output of electric current: 250~600MAH (Varies by different models of cell phones)
● Built-in battery: 1500 MAH Li battery
● DC charge output plug: applicable USB plug
● Product Size: 114.5mm × 76.0mm × 14.0mm
● Accessories: 1 DC plug, 5 charging switches, a package