Rebuilding a laptop battery?

Do you have a technical question that doesn't really fit a specific console? Want some general info on electronics, hacking, making cookies, etc? Here's the place to ask! Go nuts.

Moderator: Moderators

Post Reply
Creebo
Posts: 59
Joined: Wed Mar 19, 2008 3:57 pm
360 GamerTag: TheWillToHarp
Steam ID: FireflyTi
Location: Milwaukee, Wisconsin
Contact:

Rebuilding a laptop battery?

Post by Creebo »

I'm doing a project with a laptop, but the battery is dead. Now the new case I'm putting it in has way more space than the previous one, so I was wondering if I could rebuild the battery following the instructions here. Also, could I do, I don't know, 3.6v cells at 2200mAh to give this a little bit of better battery life? Or could I just wire up more batteries in parallel to achieve better battery life? As I said, there's quite a bit of space in here.

Thanks!
Haunted360
Posts: 1000
Joined: Sat Jan 30, 2010 12:22 am
PSN Username: Haunted360
360 GamerTag: Haunted 360
Location: Australia
Contact:

Re: Rebuilding a laptop battery?

Post by Haunted360 »

Swap the cells over EXACTLY the same. Never go higher in voltage, or lower. The only thing you may go higher in, are the milliamps.

If there are 7 ni-cad cells at 400 mah each, you MUST replace them with 7 ni-cad cells at 400 or greater milliamps.
Creebo
Posts: 59
Joined: Wed Mar 19, 2008 3:57 pm
360 GamerTag: TheWillToHarp
Steam ID: FireflyTi
Location: Milwaukee, Wisconsin
Contact:

Re: Rebuilding a laptop battery?

Post by Creebo »

As long at the voltage (in my case 10.8v) is the same, I could use any combination of voltage/current of cells right? What I remember from physics was cell in series = increased voltage, cells in parallel = increased current. Could I do 2x7.2v cells at 2200mAh, and 2x3.6v cells at 2200mAh? Or is it bad practice? I'm seeing if I understand you properly :)
Haunted360
Posts: 1000
Joined: Sat Jan 30, 2010 12:22 am
PSN Username: Haunted360
360 GamerTag: Haunted 360
Location: Australia
Contact:

Re: Rebuilding a laptop battery?

Post by Haunted360 »

Hmm... That reply is a little confusing.
Current and Voltage are the same thing, but when or not active.
http://www.kpsec.freeuk.com/voltage.htm


Batteries in series, increase voltage.
Batteries in parallel, increases amps.


What does the label on your current battery read?
Post Reply