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Rockbox mail archiveSubject: Re: BATTERY-FAQ and the FMRe: BATTERY-FAQ and the FM
From: Brent Geery <fasttimes_at_mochamail.com>
Date: Sun, 08 Jun 2003 13:47:56 -0700 On Sat, 07 Jun 2003 17:22:42 -0400, Neon John <johngd_at_bellsouth.net> wrote: > On Sat, 07 Jun 2003 13:54:34 -0700, Brent Geery <fasttimes_at_mochamail.com> > wrote: > > > >These things are on sell all the time in various ads. I picked up the > >$10 Energizer UPS I mentioned (price was too good to pass up). I'm > >going to replace the tin 3.7AH battery with an external 56AH Battery > >pack (I have them from another prject.) Just add an "extension" from > >the wires on the UPS to the external battery. I calculated that I'll > >get 30+ hours of runtime on the UPS alone. > > Probably not. Most of these little 10 and 20 minute standby units lack the > thermal management to run continuously. The design relies on the battery > running down before enough heat builds up inside the unit to matter. I know > this to be the case for the little Tripp-Lite unit I use to back up the > registers in my restaurant. I simply cut some holes in the case and added a > muffin fan, along with larger batteries. > > This is at least something to be aware of as you experiment. Yes, I've read this before, but I don't think the ~20-75 watt load on a 200-300 watt inverter is in an danger of over-heating. But, something to think about anyway. -- BRENT - The Usenet typo king. :) Fast Times At Ridgemont High Info http://www.FastTimesAtRidgemontHigh.org Voted #87 - American Film Institute's Top 100 Funniest American FilmsReceived on 2003-06-08 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |