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Trying to build a bigger capacity battery for my laptop with 3400mah 18650 cells

post #1 of 6
Thread Starter 
I have a laptop that has really nice specs, but it only has a 3834 mah 41Wh battery. It lasts about 2 hours. If you take the cover off of the battery it has Samsung ICR1865022F x6 cells which are rated at 2200mah. Looks like they are spot welded in a pack together. I am interested in getting some pre tabbed Panasonic NCR18650B cells that are rated at 3400mah and replacing the other ones. You can get a replacement battery for the laptop online for about 30 bucks so I was figuring I would keep the stock battery intact and just replace the cells in a replacement one. Seems like it wouldn't be all that hard to do. Has anyone done anything like this before or have any advice?
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SuperMegaPwnsauce
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post #2 of 6
Soldering onto the stainless steel tabs in problematic, but, with patience, can be done.
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by billbartuska View Post

Soldering onto the stainless steel tabs in problematic, but, with patience, can be done.

I have pretty extensive soldering skills and very good soldering equipment so i'm not too worried about that. More worried about if it will work, if the battery will charge to full capacity, if the circuitry in the battery can handle it and see the greater capacity of the cells etc.
SuperMegaPwnsauce
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SuperMegaPwnsauce
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post #4 of 6
750°+ and flux. The ticket is a clean tab and fast with the heat.

I like to solder tab to tab or wire to tab. Soldering directly to an ionic battery can damage it.

And yes, the replacements will do what you want. May take a little longer to get to full charge though.
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My System
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Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
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2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by billbartuska View Post

750°+ and flux. The ticket is a clean tab and fast with the heat.

I like to solder tab to tab or wire to tab. Soldering directly to an ionic battery can damage it.

And yes, the replacements will do what you want. May take a little longer to get to full charge though.

Yep that's what I was thinking. My Hakko goes to 900 deg so no problem thumb.gif Solder the tabs together and then fold them up if the batteries need to go end to end, and then soldering the main connection wires to the tabs. The extra charge time is expected with a higher capacity battery. It currently takes about 1 hour to get a full charge with the small battery it has.
Edited by killeraxemannic - 4/14/17 at 1:16pm
SuperMegaPwnsauce
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SuperMegaPwnsauce
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post #6 of 6
you can handle this...........
My System
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FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
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Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
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2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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Logiteck G400s none 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
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