Rebuild a laptop battery pack?

Philippine Mango

Diamond Member
Oct 29, 2004
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Has anyone on this forum rebuilt a laptop battery pack? If so, is it possible to stick cells with higher mah rating than the ones already inside? Reasoning I see that you shouldn't is that since the charger controller is designed with a battery in mind, it may allow for discharges that are too low? The reasoning that I see that you can do that is that the charger will simply only allow to charge to a certain capacity of the battery, if you charge a battery not all the way to 100%, it should technically last longer, right?
 

WackyDan

Diamond Member
Jan 26, 2004
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Seen the Dells catching fire lately? There's a reason why you shouldn't attempt it.

But your caution due to the micro-controller built into the battery is dead right, don't add something new to the mix.

Also, not charging a battery to 100% is also not good for the battery. They are designed to have peak charge. It's over charging, and lack of cycling that hurts a battery, as well consisitant under charging.
 

Skeeedunt

Platinum Member
Oct 7, 2005
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I'd spend the extra couple bucks to reduce the risk of blowing a hole in your lap.
 

Philippine Mango

Diamond Member
Oct 29, 2004
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Originally posted by: WackyDan
Seen the Dells catching fire lately? There's a reason why you shouldn't attempt it.

But your caution due to the micro-controller built into the battery is dead right, don't add something new to the mix.

Also, not charging a battery to 100% is also not good for the battery. They are designed to have peak charge. It's over charging, and lack of cycling that hurts a battery, as well consisitant under charging.

Huh? To store li-on batteries, you keep them at a constant 40% and 15C temp storage. Why would you say otherwise? Unless of course you're talking about Ni-cad or NIMH.
 

GrammatonJP

Golden Member
Feb 16, 2006
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Originally posted by: WackyDan
Seen the Dells catching fire lately? There's a reason why you shouldn't attempt it.

But your caution due to the micro-controller built into the battery is dead right, don't add something new to the mix.

Also, not charging a battery to 100% is also not good for the battery. They are designed to have peak charge. It's over charging, and lack of cycling that hurts a battery, as well consisitant under charging.


most of those battery are from sony and sanyo... soon those ps3 will catch on fire also
 

Philippine Mango

Diamond Member
Oct 29, 2004
5,594
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Originally posted by: GrammatonJP
Originally posted by: WackyDan
Seen the Dells catching fire lately? There's a reason why you shouldn't attempt it.

But your caution due to the micro-controller built into the battery is dead right, don't add something new to the mix.

Also, not charging a battery to 100% is also not good for the battery. They are designed to have peak charge. It's over charging, and lack of cycling that hurts a battery, as well consisitant under charging.


most of those battery are from sony and sanyo... soon those ps3 will catch on fire also
Ironically, sony does not use it's products in it's own products. If you buy a sony laptop, you'll get toshiba optical drives and either sanyo or some other brand batteries. In an IBM laptop, you'll get sony batteries and what ever brand optical drive. Toshiba laptops don't have toshiba HDDs or optical drives (in the ones I've seen at least), kind of funny if you think about it.