A portable source of light probably started with a cave man carrying a burning stick of wood. There have been many portable light sources based on burning something. Once the dry cell battery became available flashlights became more popular than they were when a lead acid or other wet battery was needed.
Disclaimer: While all the effort has been made to make this service as helpful as possible, this is free service and the author makes no warranties regarding the accuracy or completeness to any information on this website.. Source: TR 2018/4TR 2018/4