Date:         Sat, 6 Dec 2014 11:37:23 -0800
Reply-To:     Stuart MacMillan <stuartmacm@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Stuart MacMillan <stuartmacm@GMAIL.COM>
Subject:      Re: A New Look In Jumper Batteries
In-Reply-To:  <CA+az7_4=qbTWJyO=eDAftZ-qcHUebzMLmb1ugSeD-f4EhgfDmQ@mail.gmail.com>
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The one I have is a 10,000 mAh lithium hydride battery, the kind that are used in hybrid vehicles by the hundreds. And that can catch fire.

This product is a result of the increased production of electric car batteries, which has lowered the price.

At some point, they no doubt will replace the lead acid batteries, if for no other reason than to reduce weight (a la Boeing's 787)

I don't think the car charging system is regulated well enough to leave one of these charging while the car is running, so they don't recommend that.  And, mine says it can deliver 200 amps for starting for a brief time, but the wires are not a large enough gauge to do that for long.  They rely on some juice coming from even a "dead" battery.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of John Rodgers
Sent: Saturday, December 06, 2014 6:50 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: A New Look In Jumper Batteries

Somewhat like a bumble bee, huh? Shouldn't be able to fly, but the bee
doesen't know that and fly's anyway!

John
On Dec 6, 2014 6:29 AM, "Jim Felder" <jim.felder@gmail.com> wrote:

> Mine came with some brief instructions but no information at all about the
> technology used nor cranking amps or whatever. It seems that when they are
> discussed the general consensus is that they couldn't work as well as they
> do.
>
> I wonder if you could hook one up along side a deep cycle battery to charge
> while you were running, then this thing would actually do most of the work
> of starting the car? That way you could have your cake and eat it too, with
> just one battery.
>
> Jim
>
> On Fri, Dec 5, 2014 at 3:55 PM, Vanagon <camping.elliott@gmail.com> wrote:
>
> > How many cold crank amps can those things possibly pack? Why aren't we
> > using them for starting batteries if they work that well?
> >
> > Dark magic, indeed.
> >
> > Jack Elliott
> > 1984 Westfalia
> >
> > > On Dec 5, 2014, at 11:51 AM, Loren Busch <starwagen@GMAIL.COM> wrote:
> > >
> > > This subject came up a couple of weeks ago, I think on this list.  The
> > new,
> > > very small/compact jump start batteries.
> > > Well, I got a chance yesterday to try on.  On a very dead battery in my
> > '90
> > > T-Bird.  And the darn thing worked!  Actually three times!  And
> according
> > > to the meter on the thing it was only pulled down about 20%.
> > > One of these:
> > > <
> > >
> >
> http://www.amazon.com/Spirit-G03-Emergency-14000mAh-Saunsung/dp/B00KCBCXKC/ref=sr_1_1?s=automotive&ie=UTF8&qid=1417808523&sr=1-1&keywords=spirit+battery
> > >
> > > So, I'm impressed.
> >
>