Is it possible to “light up” a car from a model battery 4S (4x3.7V) - 14.8V?

Question

Do it yourself

I read an article recently that there is such a cigarette lighter and there is a 3S 11.1V battery inside, so I only have 14.8V at 5000mAh, what will happen if I plug it in to help my dead car battery to start?

Answer 1

It’s impossible from one model, a large starting current, so if there are five cans in parallel, and three such parallels ...
... well, or a dozen packages in three parallels, because they have less current.
It’s easier / cheaper to assemble a vigorous battery of capacitors, charge them through a voltage converter, no matter what, even from a dead battery. And have a guaranteed start in winter.

Answer 2

I started the Zhiguli from the assembly for the hexacopter. It used a couple of these www.hobbyking.com/hobbyking/store/uh_viewItem.asp?... connected in series, but I tapped one to get 14.8V. I started it fully charged several times while I was setting up the motor in the garage, but I haven’t bought a normal battery yet. He twisted sooooo cheerfully, in my opinion, even the tension did not really sag. It was really warm in the garage, +15 for sure and the oil was fresh.