What can I do if it does not light/does not light sometimes? Are the AC adapter and power cable plugs properly connected? If it is not, please make sure all plugs are plugged in. Is it charging? Please try again after charging for a certain period of time. Related articles The central part of the light source is dark when I light up the lantern. Is this a failure? What does it mean when the charge indicator flashes twice? Why am I not seeing any fluctuation? How can I return my purchase? Can it be used while charging the battery?