Comments on: Refilling laptop batteries! http://www.summet.com/blog/2007/02/17/laptop-battery-refill/ My external memory Sat, 05 Jul 2008 22:58:33 +0000 http://wordpress.org/?v=2.5.1 By: Jay http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-5905 Jay Wed, 28 May 2008 14:19:33 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-5905 Duc Tien, If by "Draining like crazy" you mean that after the first charge the battery level indicator goes down rapidly (during the first discharge), then yes, this matches what happened to me. The best I can come up with is that the charge control circuit thinks that it is still using your old cells, so when it sees a lot of current leaving the cells it figures that they are rapidly getting close to their "zero" point, and makes the percentage of battery left indicator drop appropriately. In my experience, my laptop would continue to run for quite a while after the battery indicator reached the zero percent mark. (as in, 20-60 minutes!). After several (5-6) full charge/discharge cycles, the charging circuitry eventually learns that the new calls were "better" than the old cells. (In my case, the battery capacity "increased" by about 10% each charge/discharge cycle.) Jay Duc Tien,

If by “Draining like crazy” you mean that after the first charge the battery level indicator goes down rapidly (during the first discharge), then yes, this matches what happened to me.

The best I can come up with is that the charge control circuit thinks that it is still using your old cells, so when it sees a lot of current leaving the cells it figures that they are rapidly getting close to their “zero” point, and makes the percentage of battery left indicator drop appropriately.

In my experience, my laptop would continue to run for quite a while after the battery indicator reached the zero percent mark. (as in, 20-60 minutes!).

After several (5-6) full charge/discharge cycles, the charging circuitry eventually learns that the new calls were “better” than the old cells. (In my case, the battery capacity “increased” by about 10% each charge/discharge cycle.)

Jay

]]> By: Duc Tien http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-5904 Duc Tien Wed, 28 May 2008 06:57:52 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-5904 Quick update: Still draining battery for the 1st time but at 6% it doesn't seem to down anymore. Quick update:

Still draining battery for the 1st time but at 6% it doesn’t seem to down anymore.

]]> By: Duc Tien http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-5903 Duc Tien Wed, 28 May 2008 06:07:15 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-5903 Jay, I just replace 6 batteries in a Toshiba battery pack (quite a task when you have low quality soldering tools). So far it is charging and has the power to boot up the laptop. Problem is... it is DRAINING LIKE CRAZY! I got 6x 2200mAH batteries and I believe the old ones were 1800ish maybe. I'm about to do a 2nd full charge and see how it goes. Is this normal for the first few recharge cycles? Jay, I just replace 6 batteries in a Toshiba battery pack (quite a task when you have low quality soldering tools).

So far it is charging and has the power to boot up the laptop. Problem is… it is DRAINING LIKE CRAZY! I got 6x 2200mAH batteries and I believe the old ones were 1800ish maybe.

I’m about to do a 2nd full charge and see how it goes. Is this normal for the first few recharge cycles?

]]> By: Dev http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-5789 Dev Thu, 22 May 2008 02:42:32 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-5789 Hi Jay, My battery for my Sony Vaio is not charging anymore; so I decided to buy a new battery. The prices of the battery in Japan however is about $250.00, so I stated thinking about repairing the battery. Your explanation was clear and very helpful. Thanks very much. I am going to try and replace the cells. Wish me luck. Thanks Regards Dev Hi Jay,

My battery for my Sony Vaio is not charging anymore; so I decided to buy a new battery. The prices of the battery in Japan however is about $250.00, so I stated thinking about repairing the battery. Your explanation was clear and very helpful. Thanks very much. I am going to try and replace the cells. Wish me luck.

Thanks
Regards
Dev

]]> By: Dom http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-4891 Dom Tue, 29 Apr 2008 21:26:32 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-4891 I just opened up my laptop Battery (for Averatec 2300). The computer wont turn on with the battery. I left it plugged to the ac adapter for at least 4 hours, still the battery charge is at 0%. With the battery case opened up, I can see each battery is at 3.8V, totaling around 11.5V. I even measured voltage at the connector :11.5V. The cells are still good! I guess it's the flash chip. What can I do? I just opened up my laptop Battery (for Averatec 2300). The computer wont turn on with the battery. I left it plugged to the ac adapter for at least 4 hours, still the battery charge is at 0%.

With the battery case opened up, I can see each battery is at 3.8V, totaling around 11.5V. I even measured voltage at the connector :11.5V. The cells are still good! I guess it’s the flash chip. What can I do?

]]> By: Max Kessler http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-4617 Max Kessler Wed, 02 Apr 2008 11:28:32 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-4617 Nathan, how did you open the EM-G320L1? There aren't any screws and I don't want to tear up the case by prying indiscriminately. Nathan, how did you open the EM-G320L1? There aren’t any screws and I don’t want to tear up the case by prying indiscriminately.

]]> By: Jay http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-4584 Jay Wed, 19 Mar 2008 13:58:31 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-4584 Adam: It took me about 5-8 charge/discharge cycles to get my new battery charged all the way up (or at least, reporting that it was charged all the way up.) It could be that the firmware/chip in your original battery does not allow the cells to be "replaced", but my suggestion is that you run your laptop all the way down every night (and then charge it all the way back up) for a week and see if anything improves. Jay Adam: It took me about 5-8 charge/discharge cycles to get my new battery charged all the way up (or at least, reporting that it was charged all the way up.)

It could be that the firmware/chip in your original battery does not allow the cells to be “replaced”, but my suggestion is that you run your laptop all the way down every night (and then charge it all the way back up) for a week and see if anything improves.
Jay

]]> By: Adam http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-4583 Adam Tue, 18 Mar 2008 23:33:06 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-4583 I did a restore of my X31 battery and have soldered everything up correctly (looking at your pictures and ones I took before removing old cells) and the battery wont charge. Watching the temps under linux show they stay normal but the charge/discharge rate doesn't change. I left it hooked up for 20 minutes and nothing changes...should I just leave it longer? I did a restore of my X31 battery and have soldered everything up correctly (looking at your pictures and ones I took before removing old cells) and the battery wont charge.
Watching the temps under linux show they stay normal but the charge/discharge rate doesn’t change. I left it hooked up for 20 minutes and nothing changes…should I just leave it longer?

]]> By: Michael Yaw http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-4570 Michael Yaw Wed, 06 Feb 2008 21:58:01 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-4570 How do you open the plastic case of the Compaq Presario R3000 laptop battery, a 14.8V 6600mAH? Do I have to cut it open? Are there any higher capacity cells? Thanks How do you open the plastic case of the Compaq Presario R3000 laptop battery, a 14.8V 6600mAH?
Do I have to cut it open?
Are there any higher capacity cells?

Thanks

]]> By: Nathan http://www.summet.com/blog/2007/02/17/laptop-battery-refill/#comment-4569 Nathan Sun, 03 Feb 2008 21:12:29 +0000 http://www.summet.com/blog/2007/02/17/super-laptop-battery/#comment-4569 Thanks for the quick reply? Now the battery is apart I can see there is only one wire to each pair of cells (actually to the connecter between the two). The laptop is an IPC Multimedia Desknote E (though I have seen it alternatively branded). The battery is an EM-G320L1 (I think made by Elitegroup Computing Systems). Thanks for the quick reply? Now the battery is apart I can see there is only one wire to each pair of cells (actually to the connecter between the two). The laptop is an IPC Multimedia Desknote E (though I have seen it alternatively branded). The battery is an EM-G320L1 (I think made by Elitegroup Computing Systems).

]]>