Wednesday, March 25, 2009

Laptop battery !


Li-On Battery Do's and Don'ts


Here is a quick list of Do's and Don'ts for the care of your Li-On batteries.
Do's

•When you receive a new NoteBook or Tablet PC, leave the battery to fully charge overnight.
•Condition a new battery by using it until it is fully discharged, and then re-charge it fully. Doing this once a month will help to accurately calibrate your battery.
•Always ensure the battery is recharged as soon as possible after it becomes fully discharged. A battery will be permanently damaged if left for an extended length of time in a fully discharged state.
•Remember that a Lithium-Ion battery will slowly deteriorate; a new battery will always perform better than one that is 6-months old.
•Remember that the battery half-life is rated for a certain total number of charge/discharge cycles (see your User Manual or Quick Start Guide for the rating). For example, a battery that is rated for 3 hours and 500 charge/discharge cycles, will still be considered as within specification, even if it only lasts for 1 hour 45 minutes after 500 charge/discharge cycles.
•Heat is the worst enemy of a battery. Allow plenty of air to circulate around the Notebook/Tablet PC, so that the battery is kept as cool as possible when charging and also when in use. If provided, use the integrated 'legs' under the Notebook to raise the notebook and improve air circulation.
•Remove the battery if storing for several months (the battery should be at approximately 50% charge or higher).
•If you use a NoteBus or if charging your Notebooks or Tablet PCs in a confined space, allow for adequate ventilation in order to keep the batteries as cool as possible.
Don'ts

•Do Not - Expose the battery to excessive heat or cold (i.e. outside the range of 10-35 degrees Centigrade ambient).
•Do Not - Store the battery in a fully charged state (store batteries with about 50% charge).
•Do Not - Allow a nearly flat battery to be unused for more than a month or so. The battery will slowly discharge until it becomes fully discharged and this will permanently damage the battery cells.
•Do Not - Charge your Notebook/Tablet PC inside a carry case - the battery may overheat.
•Do Not - Charge your Notebook/Tablet PC when stacked on top of each other - the battery may overheat.

Remember: Your battery is slowly degrading all the time, even if it is not used. Keeping your battery as cool as possible will slow down this degradation considerably.