It is difficult to predict how long a laptop Battery charge will last because each computer user has dissimilar habits and needs. The rate at which you use laptop Battery power will determine how long you can use the Battery of your laptop. You can re-calibrate your laptop battery if the battery's life has gotten shorter over time. Your laptop battery might need a good calibration if it doesn't seem to be getting the mileage that it should. How to re-calibrate laptop battery? The following paragraphs will give you the answer.
How to Re-Calibrate Your Laptop Battery?
First put the laptop computer to sleep by turning off the screensaver and other power supervision settings of the computer. Then fully charge the computer and allow it to run all the way down until the computer shuts off automatically. Once the laptop battery has fully drained, charge it back up again and restore the screensaver and power supervision settings.
Re-calibrate your battery every month or so by fully charging, fully discharging, and then fully charging again. Basically to have a opening to re-calibrate your laptop battery is to turn off all power-saving features thoroughly and then fully recharge them. If it doesn't work for the first time then try two more full discharges and recharges.
The above way of re-calibrating the laptop batteries works well with laptops using Ni-Mh cells. But not with laptops using Li-Ion batteries because deep discharges will truly decrease the charge capacity and lifespan of Li-Ion cells. Moreover Li-ion batteries irreversibly lose practically 20% capacity per year from the time of form at a typical 100% charge level at 25deg.C, even when unused. Li-ion batteries irreversibly lose practically 2%, 4%, 15% at 0deg.C, 25deg.C and 40deg.C respectively, when stored at 40% charge level. That is every deep dismissal cycle decreases the capacity of the Li-ion batteries. As the Li-Ion batteries are chemical in nature, charging and recharging is not going to fix the problem once the chemical reactions stop happening. Therefore the best guidance for re-calibrating the Li-Ion batteries is to store the battery at 40% charge if it kept unused for any unlimited duration of time. Also don't leave the battery in the laptop if you don't use the battery or if you plug the laptop into outlet power.
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