Empty the CD/DVD drives..Even if you donít intend to use it, donít leave any CD/DVDs as leftovers in the drives. A spinning drive sucks battery power like a sponge..
RUN DOWN does mean let it go until laptop goes to sleep and beyond, but not totally dead.
If in doubt test you mobile phone, if you let it discharge until it switches off then charge it you will get longer use than previously where you partially discharged and recharged.When the battery reaches "empty", the computer is forced into sleep mode. The battery actually holds a reserve beyond "empty", to maintain the computer in sleep for a period of time. Once the battery is truly exhausted, the computer is forced to shut down. At this point, any open files could be lost. Therefore, it is important that you find an electrical outlet and connect the adapter before the forced shutdown occurs.
Unfortunately battery technology does come at a price for good quality.
However, whatever quality you get buy, the average life span of any laptop battery is 12 - 24 months depending on use, most laptop batteries life will start to diminish after 12 months.
Since the technology is dictated by the chemistry, which dictates the constituents, which dictates the input prices, there is no correlation between price and good or bad technology.Unfortunately battery technology does come at a price for good quality.
A "low" tech battery well constructed from high grade components might easily be the equal of or better than a "high" tech one shoddily crafted from inferior grade inputs.
Price simply is not a reliable indicator of quality, reliability, or usefulness.
Although placing a laptop in standby mode saves some power and you can instantly resume where you left off, it doesnít save anywhere as much power as the hibernate function does..Hibernating a PC will actually save your PCís state as it is, and completely shut itself down..