[antihero]

Wait, you can use a mobile battery pack to start a fucking vehicle? Was that one of the ones with 12V DC out? How did it have enough current?

[Turbo_hedgehog]

http://www.ianker.com/Jump-Starters/category-c92-s1

[tempestn]

Presumably you leave it connected for a while to charge the car battery, and then start.

[maxerickson]

They are powerful enough to crank the engine.

Random youtube demo: https://www.youtube.com/watch?v=WLZeFiJA5LM

[tempestn]

Wow, I stand corrected. That's impressive.