Date: Fri, 28 Sep 2001 23:12:42 -0500 From: David VanHorn <[EMAIL PROTECTED]> Subject: Re: Homebrew battery packs
At 08:31 PM 9/28/01 -0700, Raymond wrote: >Date: Sat, 29 Sep 2001 11:22:38 +0800 >From: Raymond <[EMAIL PROTECTED]> >Subject: Homebrew battery packs > >Hi all! > >Anyone here tried building an external battery pack for their Libretto >(like www.fixup.net/tips/battery/battery.html ) but using NiMH batteries >(10 of them) instead of the sealed lead acid pack? For that matter, does >anyone know if you could charge a NiMH pack the same way as Xin Feng (on >that site) does a sealed lead acid pack (ie. just plug it straight into >the 15 volt Libretto AC adapter on the basis that a charged pack peaks >close enough to 15 volts)? That would be a bad idea. Lead Acid cells drop to zero current at full charge. Nicads and NIMH's increase current at full charge. Not that you couldn't run it from NIMH, but the lib's charger is not a good match to NIMH or Nicad cells. >For that matter, can anyone give me a ballpark figure of how much current >the Libretto 50CT (clocked to 100MHz if that makes any difference) could >be expected to draw on low power (or high power for that matter)? I used to know that. It's something less than 2A. -- Dave's Engineering Page: http://www.dvanhorn.org Got a need to read Bar codes? http://www.barcodechip.com Bi-directional read of UPC-A, UPC-E, EAN-8, EAN-13, JAN, and Bookland, with two or five digit supplemental codes, in an 8 pin chip, with NO external parts. ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
