Electrical: These new TINY jump start units

[shifter4]

These are amazing . I do not have one ( yet ) , but a friend says that he has started
4 cars with his .
What is the technology here ?

http://www.all-battery.com/PropelJumpStarterPowerBankCarKit-51067.aspx?utm_source=GoogleShopping&utm_medium=GDF&gdftrk=gdfV26767_a_7c354_a_7c922_a_7c51067&gclid=CMCvsoGd8r0CFRQS7AodAiUAKA

http://www.amazon.com/PowerGo-Unbelievably-Portable-Battery-Includes/dp/B00E0UNF4E

http://www.amazon.com/dp/B00D42AFS8/?tag=hotoge-20

[Commander Eddie]

That is pretty nifty. I wish they also made one for 6 volt systems.

[jerezstude]

They simply use a sealed lead acid battery, bigger is better. The smaller ones are good for smaller cars but won't start larger high compression engines. If you want a 6 volt unit simply replace 12 volt battery with a 6 volt one. Jerry Kurtz

[shifter4]

They simply use a sealed lead acid battery, bigger is better. The smaller ones are good for smaller cars but won't start larger high compression engines. If you want a 6 volt unit simply replace 12 volt battery with a 6 volt one. Jerry Kurtz

The fellow that showed his to me ( and is a very experienced car guy in the biz ) , says
that he used his to fire up a 1985 Corvette that hadn't started for months , and then used it on
a basically dead truck as well. These are very very small , not a typical small lead acid jumpstart.
His is about the size of an iPhone . Very lightweight.
That piqued my interest. Also , another friend connected with a GrandAm team has told me that they
are using some quite small, and light batteries in those cars as well.
There are a number of Dry cell batteries available for drag cars. , Very light . A bit to costly for me , so I have recently
put a new Optima Yellow Top in my drag car. That was after talking to a tech at Optima .
I'm just curious about the battery tech. I do know that the Tesla uses a huge number of Laptop batteries.
I also have switched all of my camera / smoke detector / flashlight / mouse to Lithium when they need new
batteries and the life is amazing .

[lakeview7]

From the description with the one link, it suggests a lithium battery is used, which would explain the small size and amazing capacity of the device (and the price).

[allstateguy]

I only know this because my brother flies electric RC planes. They are called LiPo batteries and can deliver quite a jolt in amps on demand. Considering how small and handy they have become, I think the price vs peace of mind could be considered reasonable.

[Green 53]

I always referred to them as 2 tons of manure in a 1 ton truck. Lots of power in a small package

Denny L