He didn’t give a current rating. “mAh” measures energy storage, and 3100mAh is enough to jump a car a couple times. Jumping a car doesn’t take a lot of energy.

He didn’t give a current rating. “mAh” measures energy storage, and 3100mAh is enough to jump a car a couple times. Jumping a car doesn’t take a lot of energy. But it does take a lot of power (and therefore current). Small Li-ion car jumpers can be surprisingly capable.