1. You'd better charge it fully for the first use. But if you don't, it doesn't matter so much.
2. The one Blue light means it's receiving light and is slowly charging. It will turn off when you put it in dark places,
3. Double Press Power button in second,The Led light will turn On or Off.
4. Charging: The solid lights shows the proportion charged, and the flashing lights shows charging, with one light indicating 25%. When all lights turn to solid blue, it means it has been fully charged
Battery Type: Lithium Battery
Capacity: 24000 mAH
Product Dimension: 3*6.2*0.87 in
Product Weight: 0.57 kg
Solar Panel: 5V/1W
AC charging time: about 7-8 hours
1 x Solar Charger
1 x Micro USB cable
1 x User Manual