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05-18-2015, 12:46 PM
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#1
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Veteran
Join Date: Jan 2004
Location: Virginia
Posts: 860
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Laptop Battery-When to charge?
Is there a recommended guide as to how low the battery should get before charging?
I don't think (not sure) it's safe to leave the battery constantly in while computer plugged in to wall for power.
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05-18-2015, 04:14 PM
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#2
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Veteran
Join Date: Aug 2005
Posts: 3,428
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I've always had my laptop battery connected when the computer is plugged in for the last 10 years (for same computer). Otherwise, it would be open underneath (potential dirt and dust problems). When plugged in, the battery is always being charged.
Or, are you thinking of something else?
Last edited by whodoyoulike; 05-18-2015 at 04:15 PM.
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05-18-2015, 05:31 PM
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#3
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Veteran
Join Date: Jan 2004
Location: Virginia
Posts: 860
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Quote:
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Originally Posted by whodoyoulike
I've always had my laptop battery connected when the computer is plugged in for the last 10 years (for same computer). Otherwise, it would be open underneath (potential dirt and dust problems). When plugged in, the battery is always being charged.
Or, are you thinking of something else?
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Good point... I take battery out because it might overcharge and cause a problem, when plugged in.
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05-18-2015, 05:40 PM
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#4
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Join Date: Mar 2001
Location: Reno, NV
Posts: 16,912
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IMHO, life is too short to do stuff like that.
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05-18-2015, 06:30 PM
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#5
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Registered User
Join Date: Feb 2013
Location: Central New Jersey
Posts: 1,467
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Quote:
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Originally Posted by Flysofree
Is there a recommended guide as to how low the battery should get before charging?
I don't think (not sure) it's safe to leave the battery constantly in while computer plugged in to wall for power.
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You didn't mention what type of battery it is. While common with older models, NiCd tends to have a shorter lifespan, is easily susceptible to the memory effect, and may struggle to hold a charge with time. Let them run down, then charge them.
NiMh marks a step up in the amount of power provided, but recharging capacity is limited.
Most modern laptops and notebooks rely on lithium-ion – overall lighter, far less prone to overcharging, and considered the most efficient out of all possibilities. The shorter the discharge, the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine. There is no memory and the battery does not need periodic full discharge cycles to prolong life.
Hope that helps.
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05-18-2015, 06:47 PM
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#6
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Veteran
Join Date: Jan 2004
Location: Virginia
Posts: 860
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Yes mine is a Li-ion battery. DC10.8V Toshiba. So it should not be left in charge at all times if I read your post correctly.
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05-18-2015, 10:39 PM
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#7
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Registered User
Join Date: Feb 2011
Posts: 600
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I have an ASUS laptop. At the bottom I can curse onto an icon indicating level of charge. Currently it reads "97% (plugged in not charging)". I'm not sure but I think it charges when it gets down to like 90%.
Last edited by forced89; 05-18-2015 at 10:40 PM.
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05-18-2015, 11:02 PM
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#8
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Registered user
Join Date: Oct 2008
Location: FALIRIKON DELTA
Posts: 4,439
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I unplug my laptop only when travelling..
__________________
whereof one cannot speak thereof one must be silent
Ludwig Wittgenstein
Last edited by DeltaLover; 05-18-2015 at 11:04 PM.
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05-18-2015, 11:50 PM
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#9
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Registered User
Join Date: Jul 2013
Posts: 17,095
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Quote:
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Originally Posted by DeltaLover
I unplug my laptop only when travelling..
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Me too. And I have never had a battery go bad before the laptop became obsolete.
__________________
A man's got to know his limitations. -- Dirty Harry
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05-20-2015, 09:36 AM
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#10
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The Voice of Reason!
Join Date: Mar 2001
Location: Canandaigua, New york
Posts: 112,871
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Quote:
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Originally Posted by DeltaLover
I unplug my laptop only when travelling..
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You need a longer cord! 
__________________
Who does the Racing Form Detective like in this one?
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05-20-2015, 09:47 AM
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#11
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Veteran
Join Date: Jan 2004
Location: Virginia
Posts: 860
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Just to clear up my fuzzy brain on this. You do not need to unplug computer when battery charge is 100% (Li-ion battery)?
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05-20-2015, 10:32 AM
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#12
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Registered User
Join Date: Aug 2007
Posts: 1,128
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I have a lenovo laptop, lithium ion battery as well. There is a specific setting available which you can set in two ways. First is to get maximum life from the battery. This is the setting we use, and will prevent the battery from charging beyond 60% or so. This is a better setting for us since the laptop is used with house current nearly 100% of the time. However, when you are planning to use the laptop away from such a power source, the setting can be changed, to allow full charging...this we would do if we anticipated leaving the home and using the battery to full advantage. So, perhaps this answers a few lingering questions that remain regarding battery efficiency vs battery life! I might add, that it is a very good thing the setting exists, in our case, because the battery is not that easy to remove!
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05-20-2015, 10:37 AM
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#13
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Registered User
Join Date: Feb 2012
Posts: 2,956
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From Wired.com
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05-20-2015, 10:46 AM
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#14
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Veteran
Join Date: Jan 2004
Location: Virginia
Posts: 860
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Quote:
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Originally Posted by upthecreek
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40% - 80%...Thanks!
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05-20-2015, 12:40 PM
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#15
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PA Steward
Join Date: Mar 2001
Location: Del Boca Vista
Posts: 88,632
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Quote:
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Originally Posted by Flysofree
Just to clear up my fuzzy brain on this. You do not need to unplug computer when battery charge is 100% (Li-ion battery)?
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I believe most modern laptops and batteries have technology in place to stop charging the battery once it reaches 100% or near 100%....no matter if it remains plugged in or not...
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