Miracle Jump Starter

No, not first hand experience. The next best thing though. I searched this site:

"A lady travelling throgh had stopped to go to the loo and car would not start - battery was stuffed internally and basically no voltage when trying to crank.

A guy around at the time said "hang on - I've got a jump start kit" and brought it out of the box that was proudly advertising a "gazillion cranking amps" as all good sales advertising does.

Well if it had more than about a 7AH Sealed Lead Acid battery in the thing based on size of the box I would have been surprised and the connecting leads would have got very warm with any serious current draw.

Did it crank the car ??? I think we got an "mmmmph!!" out of it and that was it.

Like the computer speakers you get claiming they are 400 Watts in a case the size of a matchbox, they find ways of exagerating the ability of these devices badly in the marketing department - eventually you might find something like "peak power for 1 micro second" written on the box.

I think the information Oldtrack posted sums it up with the origin and poor translation of the language - the old addage "if it's seems too good to be true, it probably is".

No-one had anything good to say about them.

Bob

Seems a few here in this thread have had good experience with them.

Shaker,

I posted my comment before this thread existed! Search under "Jump Starter". Try thread 74366 for example.

I'm glad I raised the subject because clearly the weight of opinion seems to have changed since it was last discussed.

Bob

Ross,

I've been using a model helicopter lithium battery as my iPad back up battery for over a year, and have been impressed by the power to weight ratio. But as for cranking a diesel engine?

Some people had 7ah sealed lead acid batteries and made claims about jump starting and so do many portable packs. 900amp out of a 18ah sealed lead acid with spade terminals?

The batteries used in these new start packs are quite different and where your Lithium battery is small but ok it won't crank a car, but a bigger one will.
If around the size of a 7ah sealed acid BUT new technology it can deliver heavy current for a few times.

Getting back to models. the Power out of some of the small batteries, smaller than the jump pack has put many a aero modeller in hospital with horrible skin and flesh trauma from propellers.

The old model engines often stalled after having a chew, the electric just keeps chewing as they found out. The danger level and required awareness has gone up exponentially. All due to battery technology.

Hi

A link to the product is provided in the OP's opening post - click on the word "this". It is underlined indicating that it is a link.

Cheers
Greg

. . . and another for a second battery !!! :D