How To: Make Your Own 9 Cell Laptop battery

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One of the main reasons in choosing the right laptop is finding one that has decent battery life. Any road warrior will tell you that plugging that electricity guzzler of a laptop isn't always easy on the go. Sure, there are outlets available, but they aren't always free or in the same area.

The Tech Guy, a user of the MSI Wind forum, has decided that he had enough of the puny battery life of his MSI Wind subnotebook. With a 3 cell battery, it sports a dreary 1 hour 40 minutes of battery life.

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His step by step how-to is pretty straightforward. It involves combining three 3-cell batteries into a huge 9-cell one. The results aren't aesthetically pleasing, but he hasn't yet created a covering. If the batteries were in a case, this DIY solution would look pretty slick. All extended batteries stick out of laptops, there is no way to get around that fact.

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The hardest part of the how-to is opening up the battery packs while keeping the wires intact. A steady hand is all that is needed to succeed this part.

There's plenty of testing to left to do, especially by charging and discharging to re-calibrate the sensor. This isn't the final version. The final version will be soldered and fiberglassed together to give it a nice, clean and slick look. The new higher capacity battery is estimated around 7aH.

The battery is estimated at around 7aH and the laptop sits about slightly higher on the back. The battery adds a little weight, but that is offset by an incredible battery life.

Here are some of his results with his new 9-cell battery:

  • 1h40 - Low Power Original Battery (Webcam Off, LAN Off, Wifi Off, BT Off, 0% Brightness, Eco mode on, Touchpad Off)

  • 3h02 - Full Power (100% CPU Load, Webcam On, LAN On, Wifi On, BT On, 100% Brightness, Eco mode off, Touchpad On)

  • 5h03 - Med Power (25% CPU Load, Webcam On, LAN On, Wifi On, BT On, 100% Brightness, Eco mode off, Touchpad On)

  • 8h00 - Low Power (0% CPU Load, Webcam Off, LAN Off, Wifi Off, BT Off, 0% Brightness, Eco mode off, Touchpad Off, Sound Card Disabled, Card Reader Disabled, USB Disabled)

via Engadget

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