Calculate Coulomb: Help Solving Homework Problem

[Physicsrapper]

Homework Statement

The engine delivers 12 kW. Per second it can shift the m = 800 kg car over a vertical distance of 1.5 m. Find the current delivered by the batteries.

Homework Equations

P = U * I
I = P/U = 12 000 W / 168 V = 71.4 A

The Attempt at a Solution

My Problem is: I don't really know how to calculate V...
I know that V = J/C and Js = 12 000, but I don't know how to find out the Coulomb.
Can please someone help?

 

[vela]

Homework Statement

The engine delivers 12 kW. Per second it can shift the m = 800 kg car over a vertical distance of 1.5 m. Find the current delivered by the batteries.

Could you please tell us the problem statement exactly as given to you?

Homework Equations

P = U * I
I = P/U = 12 000 W / 168 V = 71.4 A

Where did you get these numbers from?

The Attempt at a Solution

My Problem is: I don't really know how to calculate V...
I know that V = J/C and Js = 12 000, but I don't know how to find out the Coulomb.
Can please someone help?

A volt is a joule per coulomb, but "Js = 12000" doesn't make any sense.