If you’ve ever wondered how Batman gets his gadgets charged, this is probably the answer. The military has developed the Remote Auxiliary Power System or RAPS. RAPS can be deployed like a grappling hook with overhead power lines. Then a tiny blade will penetrate the power line and make contact with the live wire inside.
The area around the blade will make contact with a second exposed wire that all powerlines have, transmitting electricity to an AC to DC converter safely at the end of the cable.