Comments on: How to get more from a high capacity netbook battery http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html Compact Computing Sun, 12 Feb 2012 20:56:00 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: laptop battery http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-54259 laptop battery Mon, 24 May 2010 14:04:05 +0000 http://www.liliputing.com/?p=3229#comment-54259 Modern materials such as Lithium-Ion do not have a memory effect, so they can be recharged when only half discharged and would then hold a full charge Modern materials such as Lithium-Ion do not have a memory effect, so they can be recharged when only half discharged and would then hold a full charge

]]> By: samuel http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-45996 samuel Mon, 27 Apr 2009 18:17:50 +0000 http://www.liliputing.com/?p=3229#comment-45996 mine is not a comment i need help with my aspire one acer notebook batterry that has stopped working and charging at thesame time just after the second day of buying.the funnest thing is that it still has 81% battery status from the initial 84%when it all began but it has not being powering on the notebook.i do not know what to do can some one in the house help becos certainly buying anoher one is out of the options. mine is not a comment i need help with my aspire one acer notebook batterry that has stopped working and charging at thesame time just after the second day of buying.the funnest thing is that it still has 81% battery status from the initial 84%when it all began but it has not being powering on the notebook.i do not know what to do can some one in the house help becos certainly buying anoher one is out of the options.

]]> By: samuel http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-19601 samuel Mon, 27 Apr 2009 14:17:50 +0000 http://www.liliputing.com/?p=3229#comment-19601 mine is not a comment i need help with my aspire one acer notebook batterry that has stopped working and charging at thesame time just after the second day of buying.the funnest thing is that it still has 81% battery status from the initial 84%when it all began but it has not being powering on the notebook.i do not know what to do can some one in the house help becos certainly buying anoher one is out of the options. mine is not a comment i need help with my aspire one acer notebook batterry that has stopped working and charging at thesame time just after the second day of buying.the funnest thing is that it still has 81% battery status from the initial 84%when it all began but it has not being powering on the notebook.i do not know what to do can some one in the house help becos certainly buying anoher one is out of the options.

]]> By: Tropi http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-15878 Tropi Fri, 20 Feb 2009 09:07:05 +0000 http://www.liliputing.com/?p=3229#comment-15878 "I’ve never needed to fully discharge and recharge a standard netbook battery"<br><br>Not wishing to sound aggressive but, you admit you have never done it. Then surely logic says, you aren't in a position to actually know whether it would make a difference or not. Neither can you pronounce on whether there is a 'need' to do so. I don't know either, but I would hesitate to write an opinion without actually trying it at least a few times first. :-)<br><br>Similar treatment of rechargeable batteries is very commonly advised in many products that use them, so commonly that I rather suspect that it does make a difference , but I don't know it for a fact. “I’ve never needed to fully discharge and recharge a standard netbook battery”

Not wishing to sound aggressive but, you admit you have never done it. Then surely logic says, you aren't in a position to actually know whether it would make a difference or not. Neither can you pronounce on whether there is a 'need' to do so. I don't know either, but I would hesitate to write an opinion without actually trying it at least a few times first. :-)

Similar treatment of rechargeable batteries is very commonly advised in many products that use them, so commonly that I rather suspect that it does make a difference , but I don't know it for a fact.

]]> By: Dave http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-11273 Dave Thu, 11 Dec 2008 03:17:50 +0000 http://www.liliputing.com/?p=3229#comment-11273 Actually they do have a memory effect, just not the way you think. From MikeZ's comment "Always discharge them to the auto-shut-down point (the controller should turn off at 2.6v per cell)" he knows what he's talking about, the controller can't allow them to discharge fully because at that point you can't safely recharge them, so it stops the discharge at a pre-set shutdown point. If you don't fully discharge the battery periodically then the zero-point will drift over time and the controller won't allow it to be fully discharged any more. This phenomenon is called "silicon memory", and is quite different from the old NiCd memory effect.<br><br>In general the requirements listed by the OP are standard good-practice care requirements for LiIon batteries, not something dubious required by only this vendor. The fact that most people don't know about them and/or ignore them is why people get far poorer performance out of LiIon batteries than they really should. Actually they do have a memory effect, just not the way you think. From MikeZ's comment “Always discharge them to the auto-shut-down point (the controller should turn off at 2.6v per cell)” he knows what he's talking about, the controller can't allow them to discharge fully because at that point you can't safely recharge them, so it stops the discharge at a pre-set shutdown point. If you don't fully discharge the battery periodically then the zero-point will drift over time and the controller won't allow it to be fully discharged any more. This phenomenon is called “silicon memory”, and is quite different from the old NiCd memory effect.

In general the requirements listed by the OP are standard good-practice care requirements for LiIon batteries, not something dubious required by only this vendor. The fact that most people don't know about them and/or ignore them is why people get far poorer performance out of LiIon batteries than they really should.

]]> By: seaman http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-11225 seaman Wed, 10 Dec 2008 14:55:54 +0000 http://www.liliputing.com/?p=3229#comment-11225 this site has batteries for nearly all netbooks <a href="http://netbookbattery.jimdo.com/" rel="nofollow">http://netbookbattery.jimdo.com/</a> this site has batteries for nearly all netbooks http://netbookbattery.jimdo.com/

]]> By: zima http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6971 zima Wed, 26 Nov 2008 08:44:48 +0000 http://www.liliputing.com/?p=3229#comment-6971 Have you actually read what you're linking to? From the pdf:<br><br>"1.2 General Features<br>...<br>- No memory effect<br>..." Have you actually read what you're linking to? From the pdf:

“1.2 General Features
…
- No memory effect
…”

]]> By: zima http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6968 zima Wed, 26 Nov 2008 08:30:31 +0000 http://www.liliputing.com/?p=3229#comment-6968 Uhmmm...no, Li-Ion absolutelly don't have a memory effect (it WAS common in Ni-Cd/Ni-Mh days, but those ended something like 10 years ago, in laptops at least (though what you're saying is understandable - many, many people didn't change the way they treat batterries...)).<br><br>"Always" discharging them to auto shutdown point is actually WORSE than recharging them "as often as possible" - Li-Ion batteries have a certain minimal charge below which they become potentially dangerous. So If you leave completelly recharged battery too long in that state, its charge will drop below that value and, thanks to safety measures integrated in it, it's dead. Permanently. (or, if safety circuit fails, the battery explodes some time later ;P )<br><br>The ONLY reason why you'd want to make one (only one) full cycle from time to time is to recalibrate the controller that show battery capacity and shuts it down when near minimal safe charge, nothing more.<br><br>And yes, you will say "but my batteries loose capacity over time"...well, that's because Li-Ion batteries, while not having memory effect, suffer from ageing - from the moment they leave the factory. (BTW that's why it's best to get batteries manufactured as recently as possible; also, while Li-Ion don't have memory effect, certain conditions (such as high temperature) accelerate their aging - THAT'S why it's good to remove them while laptop is running on AC power, not some "memory effect"; and if removed for a longer time, keep them at around 70% capacity in a cold place (BUT NOT IN FREEZING TEMPS, it's also potentially dangerous)) Uhmmm…no, Li-Ion absolutelly don't have a memory effect (it WAS common in Ni-Cd/Ni-Mh days, but those ended something like 10 years ago, in laptops at least (though what you're saying is understandable – many, many people didn't change the way they treat batterries…)).

“Always” discharging them to auto shutdown point is actually WORSE than recharging them “as often as possible” – Li-Ion batteries have a certain minimal charge below which they become potentially dangerous. So If you leave completelly recharged battery too long in that state, its charge will drop below that value and, thanks to safety measures integrated in it, it's dead. Permanently. (or, if safety circuit fails, the battery explodes some time later ;P )

The ONLY reason why you'd want to make one (only one) full cycle from time to time is to recalibrate the controller that show battery capacity and shuts it down when near minimal safe charge, nothing more.

And yes, you will say “but my batteries loose capacity over time”…well, that's because Li-Ion batteries, while not having memory effect, suffer from ageing – from the moment they leave the factory. (BTW that's why it's best to get batteries manufactured as recently as possible; also, while Li-Ion don't have memory effect, certain conditions (such as high temperature) accelerate their aging – THAT'S why it's good to remove them while laptop is running on AC power, not some “memory effect”; and if removed for a longer time, keep them at around 70% capacity in a cold place (BUT NOT IN FREEZING TEMPS, it's also potentially dangerous))

]]> By: zima http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6964 zima Wed, 26 Nov 2008 08:11:44 +0000 http://www.liliputing.com/?p=3229#comment-6964 It is too far fetched - modern Li-Ion baterries absolutelly don't need several complete cycles to keep their full charge.<br><br>The only reason why ONE full cycle is good from time to time is to calibrate/recalibrate the sensors that report battery capacity, nothing more. It is too far fetched – modern Li-Ion baterries absolutelly don't need several complete cycles to keep their full charge.

The only reason why ONE full cycle is good from time to time is to calibrate/recalibrate the sensors that report battery capacity, nothing more.

]]> By: markntravis http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6893 markntravis Wed, 26 Nov 2008 04:31:22 +0000 http://www.liliputing.com/?p=3229#comment-6893 One should use a credit card to buy from these semi-shady sellers so you can put the charge in dispute if the product is not as advertised. One should use a credit card to buy from these semi-shady sellers so you can put the charge in dispute if the product is not as advertised.

]]> By: Tiggertrouble http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6817 Tiggertrouble Tue, 25 Nov 2008 22:44:27 +0000 http://www.liliputing.com/?p=3229#comment-6817 In the past rechargeable batteries like Nickel-Cadmium (Ni-Cad) had a memory effect nessecitating a full discharge - recharge cycle. If the batteries were only half discharged and then recharged they would develop a memory and only hold a half-charge.<br>Modern materials such as Lithium-Ion do not have a memory effect, so they can be recharged when only half discharged and would then hold a full charge. However over time the power level indicator in the controller inside the battery will drift slighly giving an inaccurate reading. Running the battery all the way down every few weeks will help recalibrate the controller to a more accurate level. <br>(The effect of decalibration in a lithium-ion battery can be seen when a battery is half discharged and recharged repeatedly. In recharge it will report as being full, but when in use will quickly drop down to showing low power.) In the past rechargeable batteries like Nickel-Cadmium (Ni-Cad) had a memory effect nessecitating a full discharge – recharge cycle. If the batteries were only half discharged and then recharged they would develop a memory and only hold a half-charge.
Modern materials such as Lithium-Ion do not have a memory effect, so they can be recharged when only half discharged and would then hold a full charge. However over time the power level indicator in the controller inside the battery will drift slighly giving an inaccurate reading. Running the battery all the way down every few weeks will help recalibrate the controller to a more accurate level.
(The effect of decalibration in a lithium-ion battery can be seen when a battery is half discharged and recharged repeatedly. In recharge it will report as being full, but when in use will quickly drop down to showing low power.)

]]> By: Mikez http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6808 Mikez Tue, 25 Nov 2008 22:25:15 +0000 http://www.liliputing.com/?p=3229#comment-6808 <a href="http://www.gpbatteries.com/html/pdf/Li-ion_handbook.pdf">http://www.gpbatteries.com/html/pdf/Li-ion_hand...</a> http://www.gpbatteries.com/html/pdf/Li-ion_hand…

]]> By: x http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6783 x Tue, 25 Nov 2008 21:00:16 +0000 http://www.liliputing.com/?p=3229#comment-6783 There is nothing about the chemistry of li-ion batteries that requires you to fully charge or discharge them.<br><br>However, when you swap batteries the battery meter in your laptop gets confused, so it may report that the battery is charged when it isn't. Fully charging and discharging the battery resets it. There is nothing about the chemistry of li-ion batteries that requires you to fully charge or discharge them.

However, when you swap batteries the battery meter in your laptop gets confused, so it may report that the battery is charged when it isn't. Fully charging and discharging the battery resets it.

]]> By: Noname http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6760 Noname Tue, 25 Nov 2008 19:34:55 +0000 http://www.liliputing.com/?p=3229#comment-6760 Update: homepage of the 13000mAh battery is <a href="http://www.afterbuy.de/Afterbuy/shop/storefront/start.aspx?shopid=22350" rel="nofollow">www.Handy-Foto-PC.de</a> Update: homepage of the 13000mAh battery is http://www.Handy-Foto-PC.de

]]> By: Noname http://liliputing.com/2008/11/how-to-get-more-from-a-high-capacity-netbook-battery.html#comment-6759 Noname Tue, 25 Nov 2008 19:29:21 +0000 http://www.liliputing.com/?p=3229#comment-6759 yesterday i found a new 13000mAh super high capacity battery for eeepc 901/1000 series netbook in ebay. It comes from a german dealer <a href="http://www.afterbuy.de" rel="nofollow">www.afterbuy.de</a>. This 13000mAh battery can also be supplied over ebay worldwide, costs about 58 dollar with 37 dollar for delivery. <br><br>13000mAh Super high capacity battery for eeePC 901/1000 yesterday i found a new 13000mAh super high capacity battery for eeepc 901/1000 series netbook in ebay. It comes from a german dealer http://www.afterbuy.de. This 13000mAh battery can also be supplied over ebay worldwide, costs about 58 dollar with 37 dollar for delivery.

13000mAh Super high capacity battery for eeePC 901/1000

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