battery pack to charge my cell phones while traveling. Also one can keep it in the sun to charge the internal battery slowly. The solar panel is connected directly to the LiPo battery. During solar charging only the green LED will illuminate. The blue LEDs will not blink during solar charging. I tested the solar panel. It measured 6V (open circuit voltage), 0.1amp (short circuit current) in evening sun exposure (0.5 - 0.6Watt). Probably a max 1 Watt panel. There is 118x70mm printed on the panel. Since the internal Lithium battery is approx. 60WH, it will take more than 60 hours of constant solar exposure to charge the battery from 0 to 100%.
If you use it infrequently, just keep it near the window when not using it, so that it's ready to go when needed.…mehr