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From: Ralph Mowery <rmowery42@charter.net>
Newsgroups: sci.electronics.repair
Subject: Re: Cell Phone Charging
Date: Tue, 15 Apr 2025 15:17:35 -0400
Organization: A noiseless patient Spider
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In article <loj1dlxcgk.ln2@Telcontar.valinor>, robin_listas@es.invalid 
says...
> 
> > 
> > I bought one of the lithium  emergency power jump starter battery.
> > Those things amaze me.  Got one off Tumu for about $ 25 and unhooked the
> > battery on my Toyota 4 cylinder truck.  It started the truck 3 times and
> > I quit at that .  It may have started it even more.  For my truck and
> > car I did buy a better one off Amazon for around $ 50 or maybe more.
> > Have not had to use them yet. The better ones will not send out any
> > power if the car battery voltage is below about 10 volts or you try to
> > hook it up reversed.  There is an over ride button that will send out
> > power to a totally dead battery or probably evenif hoked in reverse.
> > The cheap ones do not have this feature.
> > They even have phone charging sockes.
> 
> Those features are nice, but why would a normal person buy it?
> 
> I made myself a pair of jump start cables from cables that were surplus 
> from a telephone exchange. Very good cables, thick. That would be 1999. 
> I carry them in my car, but I don't remember having ever used them. 
> Maybe once?
> 
> A nice kit like you describe would probably have the battery die of old 
> age in that time. For a garage or parking lot to have, yes, but a normal 
> person?
> 
> -- 
> Cheers, Carlos.
> 
> 

I have jumper cables in my car also.  That does not help if you are 
somewhere there are no others around to jump you off.  I may neve use 
it,but like insurance it is conforting to know I have it if needed. Abou 
t 2 years ago I did not have one and the battery died in my car.  Had to 
call my son to come and jump me off.  Just good that he was not working 
that day. I think that I have only had to use them 3 times in about 60 
years of driving.