09-07-2009, 00:03
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#1
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Inactive
Join Date: Mar 2007
Posts: 4,931
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Is it OK to do this?
I want to leave a DVD to encode overnight and set it to shut down once it is complete. Is it OK to leave the laptop on overnight but leave the battery out so as not to overcharge it, I don't want it to break or anything and just wanted to be sure it's OK to do this....
Thanks,
Ben
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09-07-2009, 00:35
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#2
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Inactive
Join Date: Jan 2006
Posts: 3,270
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Re: Is it OK to do this?
sure its fine, iv been running a laptop for 3+ months now without problems, so theres no real need to power it down, but theres no problem if you do as they have regulators in there to stop overcharging anyway...
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09-07-2009, 01:01
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#3
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Inactive
Join Date: Mar 2007
Posts: 4,931
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Re: Is it OK to do this?
OK Thanks, i've put it in a place where there is plenty of ventilation haha.
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09-07-2009, 18:23
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#4
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Hello !
Join Date: Mar 2004
Location: Somewhere
Services: Sky, AppleTV, Netflix
Posts: 16,632
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Re: Is it OK to do this?
Many people never take out their battery so there is nothing to worry about. You'l be fine.
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09-07-2009, 18:31
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#5
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Inactive
Join Date: Jun 2003
Location: 127.0.0.1
Age: 59
Posts: 15,868
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Re: Is it OK to do this?
I've never taken the battery out of may laptop for three years. Virtually every time it's in use it's plugged in, and when in use it'll be running, mostly idle, for hours on end.
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09-07-2009, 19:16
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#6
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Inactive
Join Date: Dec 2005
Location: Knaresborough UK
Age: 44
Services: 100mb BB
TiVo 500gb
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Posts: 833
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Re: Is it OK to do this?
Quote:
Originally Posted by Rob
I've never taken the battery out of may laptop for three years. Virtually every time it's in use it's plugged in, and when in use it'll be running, mostly idle, for hours on end.
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Did that with my Toshiba laptop for 4 years, no problems. Did the same with my Acer laptop and the battery was duff within seven months.
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09-07-2009, 20:39
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#7
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Hello !
Join Date: Mar 2004
Location: Somewhere
Services: Sky, AppleTV, Netflix
Posts: 16,632
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Re: Is it OK to do this?
You'd think there would be some kind of battery shut off once it is charged.?
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09-07-2009, 22:21
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#8
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Inactive
Join Date: Mar 2007
Posts: 4,931
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Re: Is it OK to do this?
It was fine, it is still working and I left the battery in and i still get 2hr 30mins charge out of it so it hasn't broken anything
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09-07-2009, 23:31
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#9
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Inactive
Join Date: Jul 2004
Posts: 399
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Re: Is it OK to do this?
Quote:
Originally Posted by Halcyon
You'd think there would be some kind of battery shut off once it is charged.?
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There is, otherwise your battery would go up in flames. Something like this is the result http://www.youtube.com/watch?v=QJCZ4ayioCU
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10-07-2009, 23:39
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#10
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cf.mega poster
Join Date: Oct 2005
Location: Merseyside
Age: 35
Services: BT Infinity Option 2, HH5, synced at maximum 80Mbps/20Mbps.
Posts: 2,221
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Re: Is it OK to do this?
You can leave them in permanently, just be sure to discharge it once or twice a month to keep it in top shape. That's where most people go wrong and kill the battery.
Also, heat is a killer, so keep the laptop cool by leaving it on a flat surface like a table, and not your bed/lap.
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11-07-2009, 00:02
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#11
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Inactive
Join Date: Jun 2003
Location: 127.0.0.1
Age: 59
Posts: 15,868
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Re: Is it OK to do this?
Quote:
Originally Posted by AbyssUnderground
Also, heat is a killer, so keep the laptop cool by leaving it on a flat surface like a table, and not your bed/lap.
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But if you can't have it on your lap, why is it called a laptop
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11-07-2009, 00:11
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#12
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cf.mega poster
Join Date: Oct 2005
Location: Merseyside
Age: 35
Services: BT Infinity Option 2, HH5, synced at maximum 80Mbps/20Mbps.
Posts: 2,221
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Re: Is it OK to do this?
Quote:
Originally Posted by Rob
But if you can't have it on your lap, why is it called a laptop
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I'm talking for long periods of time. Especially the ones that get so hot you end up cooking the flesh in your legs
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11-07-2009, 01:22
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#13
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©Beam Software
Join Date: Jan 2004
Location: Teesside
Services: BB (200mbit), 1x V6, iPad, iPhone
Posts: 1,411
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Re: Is it OK to do this?
Quote:
Originally Posted by AbyssUnderground
You can leave them in permanently, just be sure to discharge it once or twice a month to keep it in top shape. That's where most people go wrong and kill the battery.
Also, heat is a killer, so keep the laptop cool by leaving it on a flat surface like a table, and not your bed/lap.
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Bad advice. You don't need to discharge lithium batterys and completely discharging them overly-stresses the battery. They have no memory effect either so charging a part discharged battery is fine and won't shorten it's life.
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11-07-2009, 11:04
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#14
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cf.mega poster
Join Date: Oct 2005
Location: Merseyside
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Posts: 2,221
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Re: Is it OK to do this?
I never said totally discharge, I said discharge, meaning use it on the battery down to a safe level (15% or so) then recharge. They DO have a memory effect actually, but not the battery itself, but rather the protection and charging circuitry instead.
I had a battery once that refused to run the laptop for more than 2 minutes before shutting off. To fix this I had to re-calibrate the batteries "fuel meter" on the circuitry by connecting a load that wasn't connected to the signal lines of the battery. I ran it until the battery turned itself off (protection circuitry) and then recharged it normally. That battery now lasts around 1 hour. Not bad for a 12 year old Lithium Ion battery.
So when people refer to it having no memory effect, that's the battery itself, not the circuitry behind charging and maintaining it. So the battery is never really dead, its just the circuitry going out of sync and it can be fixed in most cases doing what I did above. If you're interested in the guide I wrote on doing this let me know and I'll pass it along.
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11-07-2009, 11:24
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#15
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Guest
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Re: Is it OK to do this?
Quote:
Originally Posted by Horace
Bad advice. You don't need to discharge lithium batterys and completely discharging them overly-stresses the battery. They have no memory effect either so charging a part discharged battery is fine and won't shorten it's life.
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That was my understanding also
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