Linux Laptop

Ian Molton spyro at f2s.com
Wed Feb 26 15:46:21 PST 2003


On Thu, 27 Feb 2003 00:21:55 +0100
Florian Teply <onlinefloh at web.de> wrote:

> li-ion is great, it got the most energy inside of the least weight and
> room if i remember correctly. But take care about charging circuitry
> to not burn them...

Indeed...

> > actually, the ARM uses so little power that with a good size
> > capacitor, or maybe a lithium cell, the CPU and RAM could probably
> > survive a hotswap of the main battery if everything else is
> > sleeping...
> >  
> You´re talking about these Gold Cap Capacitors? 1 Farad at 5.5 Volts? 
> taking power consumption of ARM processors into account, probably one
> of these Gold Caps could be enough to provide a battery swapping time
> of about thirty minutes when system is sleeping... Should be enough
> time to swap batteries even for blind 130 year old Great-grand-pa ;-))

I was thinking more like a few hundred microfarads at 5V actually...
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