Many people discussed on the innovative ideas to extend time in the air (TITA), ranging from traditional tethered solutions to really innovative, small rotary engines. Since this topic arouse, the performance of the Lithium-ion battery have been improved and on the other hand, TITAs are also supposed to get longer.
With the innovations in the UAVs, the battery suppliers are also accelerating their growth. Plus, with the growth in the UAV, the need for safe batteries and electrical system also rises. UL created a new standard to help ensure the safety of Li-ion batteries used in UAVs.
Alternatives such as hydrogen fuel cells would also work well, but these new and innovative solutions had a bright future. Moreover, the first UAV platform is currently undergoing testing and its forecasted to be the first of many more to come.
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https://bit.ly/2Ic12qXI think we should have electrical batteries or we can use solar panel that can help drones to maintain their airtime position however there would be artificial intelligent robots that could fix the drones whenever there's a certain problem with the devices so we can assure that it would be safe and no harm for people around.