Car battery jump starter recommendations

I was rather disappointed with the lithium jump start pack. It said how it could be damaged if cranked for too long etc. And I don't crank an engine with a stop watch in my hand.
 
Very disappointing if they give no indication of time. It allows them to write off any failures as ''over-cranking''.
 
mointainwalker said:
Very disappointing if they give no indication of time. It allows them to write off any failures as ''over-cranking''.
Click to expand...

Most of the instructions for their use, seem to say to limit cranking to 30, or 60 seconds. Even 30 seconds cranking an engine over, with no start, is a very long time to be cranking it. The only time I have ever done that, for that long - was very many decades ago, when I have broken down in the middle of the road, and cranked it to get a car out of the way.
 
mointainwalker said:
Very disappointing if they give no indication of time. It allows them to write off any failures as ''over-cranking''.
Click to expand...
If a vehicle doesn't start within 5 or so seconds of cranking then you can't expect a little battery pack to be the answer.

They are a 1st aid item. Not a hospital cure.
 
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