Comments on: How to Extend Your Laptop Battery Life

By: Michael.ave

Michael.ave — Fri, 28 Jan 2011 08:24:32 +0000

Li-ion batteries are charged in three stages, constant current, constant voltage and top-off charge. The current value is arbitrary, and it determines the duration of the charge, the temperature, as well as the point in time when the max voltage will be reached. Too high currents will cause corrosion by making the battery reach overly high voltages.

By: Steve

Steve — Tue, 04 May 2010 01:52:19 +0000

Yeah, the newer Macs have this option as well but if you insert a five dollar bill instead of the one dollar bill the reserve internal battery backup charge can last up to an hour.

By: Bill G

Bill G — Tue, 04 May 2010 01:47:10 +0000

Some Dell, HP, Lenovo, Sony and Gateway laptops are shipped with a reserve internal battery backup charge that can last up to 30 minutes after the main battery has stopped working. Access the reserve internal battery backup charge by pressing the F12 key repeatedly whilst also releasing the battery locks. The battery drops out and at the same time the back up battery screen will appear on the monitor. Then you have 20 seconds to insert a Dollar bill into the slot where the battery was held, and then click on accept to turn on the extra charge. I use this feature a lot when I travel.

By: TechFreak

TechFreak — Thu, 22 Oct 2009 05:46:03 +0000

Good points. A lot of laptops have Bluetooth too, so make sure that is turned off.

By: Loren L.

Loren L. — Wed, 21 Oct 2009 23:43:03 +0000

You can also turn off your wireless network adapter to conserve some power on the airplane. I have also heard that setting your desktop background to pure black helps ;-)