That's what I think!

Jim 

> On Dec 6, 2014, at 7:37 PM, Stuart MacMillan <stuartmacm@gmail.com> wrote:
> 
> I can't see any reason not to.  Now you don't need a battery isolator, just
> run them both down and jump the starting battery!
> 
> Stuart
> 
> -----Original Message-----
> From: Jim Felder [mailto:jim.felder@gmail.com] 
> Sent: Saturday, December 06, 2014 2:45 PM
> To: Stuart MacMillan
> Cc: vanagon@GERRY.VANAGON.COM
> Subject: Re: A New Look In Jumper Batteries
> 
> I just looked at the instructions to my Rockford Pocket Power Jump Starter
> as to charging in the car:
> 
> "Plug the DC car adapter into the DC car charging port. Connect the 14v 1a
> input port of the Pocket Power Jump Starter to the other end of the DC car
> adapter"
> 
> No mention is made of any limitation as to the time. It does say "this unit
> is not designed to be used in the place of a vehicle battery."
> 
> Jim 
> 
> 
> 
>> On Dec 6, 2014, at 1:37 PM, Stuart MacMillan <stuartmacm@GMAIL.COM> wrote:
>> 
>> 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/B00KC
>>> BCXKC/ref=sr_1_1?s=automotive&ie=UTF8&qid=1417808523&sr=1-1&keywords=
>>> spirit+battery
>>>>> 
>>>>> So, I'm impressed.
>