The Cellar  

Go Back   The Cellar > Main > Technology
FAQ Community Calendar Today's Posts Search

Technology Computing, programming, science, electronics, telecommunications, etc.

Reply
 
Thread Tools Display Modes
Old 03-06-2010, 09:44 PM   #1
Clodfobble
UNDER CONDITIONAL MITIGATION
 
Join Date: Mar 2004
Location: Austin, TX
Posts: 20,012
Quote:
Originally Posted by tw
Laptops are intended to be used from AC power (not batteries) most of the time.
If I have to be plugged into the wall, it might as well be a desktop.
Clodfobble is offline   Reply With Quote
Old 03-07-2010, 08:11 PM   #2
tw
Read? I only know how to write.
 
Join Date: Jan 2001
Posts: 11,933
Quote:
Originally Posted by Clodfobble View Post
If I have to be plugged into the wall, it might as well be a desktop.
A desktop stays in one location. Does not contain a UPS.

A laptop is mobile - can be used in (and powered by) a car. Contains a UPS. Can be used temporarily without power during unexpected events.

Or you can say money is no object and just keep buying batteries.

Technology is still slowly addressing this problem. Part of the solution is sold by Intel with the trade name Atom. HP and others are/were testing better battery technologies (500 cycles) in customer machines (who do not even know they were using experimental batteries). Things will get better because the computer industry is so innovative. And because some American battery companies have decided to let innovators innovate. But currently, laptops are not intended to be used regularly only from batteries.

Laptops are mobile devices that even contain a UPS. Do you regularly operate a desktop only from its UPS battery? Then learn how quickly that UPS battery fails. A UPS for desktops is a cheapest design. Wears out its batteries even faster. Laptops also have a UPS – typically rated only for 300 discharge cycles.
tw is offline   Reply With Quote
Old 03-06-2010, 09:50 PM   #3
lumberjim
I can hear my ears
 
Join Date: Oct 2003
Posts: 25,571
you could get an extension cord?
__________________
This body holding me reminds me of my own mortality
Embrace this moment, remember
We are eternal, all this pain is an illusion ~MJKeenan
lumberjim is offline   Reply With Quote
Old 03-07-2010, 07:56 PM   #4
mbpark
Lecturer
 
Join Date: Jan 2001
Location: Carmel, Indiana
Posts: 761
Portable generator?
mbpark is offline   Reply With Quote
Old 03-07-2010, 08:55 PM   #5
Clodfobble
UNDER CONDITIONAL MITIGATION
 
Join Date: Mar 2004
Location: Austin, TX
Posts: 20,012
Quote:
Originally Posted by tw
A desktop stays in one location. Does not contain a UPS.

A laptop is mobile - can be used in (and powered by) a car. Contains a UPS. Can be used temporarily without power during unexpected events.
Yes, I understand the technological difference between the two. But if I can't drag my laptop all over the house for a couple hours at a time, then plug it back in to recharge before dragging it all over the house again... then it's no good to me.

Quote:
Originally Posted by tw
Laptops also have a UPS – typically rated only for 300 discharge cycles.
How do partial discharges fit into this rating? Because I've had this laptop (with the original battery) for almost 3 years now, and I've run it on battery power for at least 2-3 hours a day, every single day. That's about 1000 partial discharges.
Clodfobble is offline   Reply With Quote
Old 03-08-2010, 09:43 PM   #6
tw
Read? I only know how to write.
 
Join Date: Jan 2001
Posts: 11,933
Quote:
Originally Posted by Clodfobble View Post
How do partial discharges fit into this rating? Because I've had this laptop (with the original battery) for almost 3 years now, and I've run it on battery power for at least 2-3 hours a day, every single day. That's about 1000 partial discharges.
Best I can provide are ballpark numbers. For example, discharging to 25% may be equivalent to 10% of a life expectancy cycles. 50% discharge may be equivalent a 35% or 40% discharge cycle. And (of course) a 100% discharge would count as a 100% discharge cycle. Ballpark numbers that only demonstrate the trend.

Another factor is how fast a discharge occurs. Some batteries last longer if each discharge cycle is slower. Or if power drain does not involve high power demand spikes. If computer useage involves repeated sleeps or other 'low power' operations, then again, a battery discharge is not as destructive to life expectancy.

Specfic numbers are difficult to obtain.
tw is offline   Reply With Quote
Old 03-11-2010, 09:53 PM   #7
classicman
barely disguised asshole, keeper of all that is holy.
 
Join Date: Nov 2007
Posts: 23,401
Quote:
Originally Posted by Clodfobble View Post
How do partial discharges fit into this rating? Because I've had this laptop (with the original battery) for almost 3 years now, and I've run it on battery power for at least 2-3 hours a day, every single day. That's about 1000 partial discharges.
Just saw this and thought I'd pass it along.
How to make your electronics batteries last longer
__________________
"like strapping a pillow on a bull in a china shop" Bullitt
classicman is offline   Reply With Quote
Old 03-07-2010, 09:02 PM   #8
lumberjim
I can hear my ears
 
Join Date: Oct 2003
Posts: 25,571
SITUATION!

If mbpark and Pete Zicato continue to refuse to PM jinx their addresses for cookie shipment, her feelings will be hurt, and I won't get any overflow cookies. Please rectify this situation, men.

/SITUATION!
__________________
This body holding me reminds me of my own mortality
Embrace this moment, remember
We are eternal, all this pain is an illusion ~MJKeenan
lumberjim is offline   Reply With Quote
Old 03-07-2010, 09:05 PM   #9
classicman
barely disguised asshole, keeper of all that is holy.
 
Join Date: Nov 2007
Posts: 23,401
I'll take em
__________________
"like strapping a pillow on a bull in a china shop" Bullitt
classicman is offline   Reply With Quote
Old 03-07-2010, 09:19 PM   #10
lumberjim
I can hear my ears
 
Join Date: Oct 2003
Posts: 25,571
point is ....she aint gonna make em if'n mitch and dar don't give her a reason to start the batches, bitches!
__________________
This body holding me reminds me of my own mortality
Embrace this moment, remember
We are eternal, all this pain is an illusion ~MJKeenan
lumberjim is offline   Reply With Quote
Old 03-08-2010, 07:46 AM   #11
classicman
barely disguised asshole, keeper of all that is holy.
 
Join Date: Nov 2007
Posts: 23,401
I've told her how beautiful, smart and and and she is. Not much more I can do...
<sulks away dejectedly>
__________________
"like strapping a pillow on a bull in a china shop" Bullitt
classicman is offline   Reply With Quote
Old 03-08-2010, 11:19 AM   #12
Pete Zicato
Turns out my CRS is a symptom of TMB.
 
Join Date: Jan 2010
Location: Chicago suburbs
Posts: 2,916
PM sent.
__________________


Talk nerdy to me.
Pete Zicato is offline   Reply With Quote
Old 03-08-2010, 04:42 PM   #13
mbpark
Lecturer
 
Join Date: Jan 2001
Location: Carmel, Indiana
Posts: 761
Will send PM later. It's been one of those days.
mbpark is offline   Reply With Quote
Old 03-11-2010, 10:06 PM   #14
lumberjim
I can hear my ears
 
Join Date: Oct 2003
Posts: 25,571
Quote:
Originally Posted by mbpark View Post
Will send PM later. It's been one of those days.
how much later?
__________________
This body holding me reminds me of my own mortality
Embrace this moment, remember
We are eternal, all this pain is an illusion ~MJKeenan
lumberjim is offline   Reply With Quote
Old 03-11-2010, 11:08 PM   #15
xoxoxoBruce
The future is unwritten
 
Join Date: Oct 2002
Posts: 71,105
Don't trust him, Mitch. He just wants to be able to reach you in the middle of the night, to come and fix his multitude of toys.
__________________
The descent of man ~ Nixon, Friedman, Reagan, Trump.
xoxoxoBruce is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 11:16 PM.


Powered by: vBulletin Version 3.8.1
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.