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From: "Carlos E.R." <robin_listas@es.invalid>
Newsgroups: sci.electronics.repair
Subject: Re: Cell Phone Charging
Date: Tue, 15 Apr 2025 10:59:33 +0200
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On 2025-04-12 17:40, Ralph Mowery wrote:
> In article <m5s280Fl2kkU1@mid.individual.net>, email@here.invalid
> says...
>>
>> In a parking lot, I came across a taxi driver with his hood open, a flat
>> battery inside, him looking for a jump start.
>>
>> He'd already attached cables to his car battery and was just casually
>> holding both leads in one hand, with remaining charge ready to bite...
>>
>>
>> I made my excuses and left.
>>

> 
> 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.