We go drone fishing quite a lot. The current Li-ion batteries...

We go drone fishing quite a lot. The current Li-ion batteries available are about the size of a stapler and last for about 10-15 mins flight time, they then have to be charged off a larger battery bank/ solar panels or generator. So you need to have about 5 - 10 batteries to have time to charge them while still being able to fish. Each one costs about $200. Huge opportunity to cut down charge times and increase flight times with Li-S. Making a battery the size of a stapler will be much easier and immediate then trying to build one for a car that will transport people.