This is a Solar LED light bulb (eq 15 watt) I bought on Amazon for $13.99 .... includes small Solar Panel. I place the solar panel on the interior window sill and it charges in about 3 hours of sunlight. It gives me almost 7 hours of light....
Small Affordable Solar : we need more devices that run like this .... good bye Electricity Bills.
LightMe Portable 15W 130LM Solar Powered Led Bulb
https://www.amazon.com/dp/B01CL71HHY/ref=cm_sw_r_tw_awdb_x_uIfbAb87KD4KP