Date: Fri, 26 Oct 2001 16:38:19 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: Re: [LIB] Intelligence of the L50/70 charging circuit
At 09:56 PM 25/10/2001 -0700, you wrote: >Date: Fri, 26 Oct 2001 00:46:39 EDT >From: [EMAIL PROTECTED] >Subject: Re: [LIB] Intelligence of the L50/70 charging circuit > >> Does anyone know how intelligent the charging circuit is in the L50/70? Is >> there any risk of overcharging the battery pack if its left turned off but >> with external power supplied for extended periods of time? Anyone know if >> the libby turns off charging altogether when it detects battery full (ie. >> the right 2 LEDs are green) or if it flips over to trickle charge? >> ... >running. (The difference as I recall between the 50 and 70, besides speed was >the 70 would charge the battery when running and the 50 won't.) Hmm ... I wonder if there is any way of modifying the charging circuit of the 50 so that it'll charge the battery whilst its running? Certainly its similar enough to work with the same RAM, AC adapter, docking station and battery pack as the 70CT ... the fact that its got to be OFF to charge the battery is a real pain in the backside as I'm finding out now. Speaking of which, perhaps thats why my battery meter is shot in my 50CT ... I've got 2 battery packs, a PA2497U (standard capacity battery pack listed for the 50CT, the original pack) and a PA2452U (standard capacity battery pack listed for the 70CT, a replacement I got). Both look identical, the latter pack sits perhaps half a millimeter off flush (so it rocks ever so slightly more than the former pack, I'm willing to put that down to the newer pack being cast in a different mold its that slight), certainly both seem to work well enough (like I said, in a thrash test I got 70 minutes out of the new pack, the old pack would only last 30-odd minutes in the same test). Both packs seem to mislead the battery meter but the battery meter seems significantly more accurate on the original (50CT) pack than on the newer (70CT) pack (it shows 0% when I've really got about 20% left as opposed to over 50% left with the new 70CT pack) ... until recently I was discounting it based on the assumption that the battery meter was always inaccurate (I've got a Tecra 500CT which has the same problem but its always used its own packs) but that the older pack seemed more accurate because it had less capacity ... that was before I realized the charging circuits in both laptops was different ... *shrug* ... Of course, both laptops take the same high capacity battery pack so perhaps the PA42497U and the PA2452U ARE identical and Toshiba are just being a little weird ... *shrug* ... wouldn't be the first time - Raymond --- /~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\ | | "Does fuzzy logic tickle?" | | ___ | "My HDD has no reverse. How do I backup?" | | /__/ +-------------------------------------------| | / \ a y b o t | [EMAIL PROTECTED] | | | HTTP://www.raybot.net | | ICQ: 31756092 | Need help? Visit #Windows98 on DALNet! | \~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/ ************************************************************** 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 **************************************************************
