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- Path: sparky!uunet!gatech!rpi!utcsri!explorer.dgp!ematias
- Newsgroups: comp.sys.laptops
- From: ematias@explorer.dgp (Edgar Matias)
- Subject: Re: How is the battery life with screen illumination turned off?
- Message-ID: <1992Nov22.142050.20523@jarvis.csri.toronto.edu>
- Organization: CSRI, University of Toronto
- References: <1992Nov22.051627.24543@leland.Stanford.EDU>
- Date: 22 Nov 92 19:20:50 GMT
- Lines: 28
-
-
- Turning off the backlighting of the screen to conserve the battery would
- certainly help. However, some (most?) backlit LCDs are unreadable without
- the backlight turned on, so this is not generally a good option.
-
- I have a PowerBook 100 and I find that powering down the hard drive extends
- battery life *considerably*. It's a bit of a pain having to wait for it to
- start spining again to access the disk, but if all you're doing is word
- processing and you have a memory based word processor this is not much of
- a problem.
-
- So, if I were you, I'd first try to find a laptap that has a readable LCD
- even when the backlighting is off. Next, I'd look into the power management
- features of the computers you're considering. They should allow you to specify
- a short period of time afterwhich the hard drive powers down (as short as 30 sec.)
-
- One thing I always thought was a good idea and never understood why no one
- has done it yet, is having ambient light piped in light the back of the LCD.
- The microscopes I used in high school worked like this. Don't know why no
- one has tried it yet...
-
- Edgar
- --
- Edgar Matias
- Input Research Group
- University of Toronto
- --
- I speak for no one...
-