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By Wired.com - Unplug your laptop
jeff
2/26/2015
1:58:58 PM
Keeping Your Laptop Plugged in All the Time Will Kill Its Battery Faster:
http://www.wired.com/2013/09/laptop-battery/


--quote:
"Cadex Electronics CEO Isidor Buchmann told WIRED that ideally everyone would charge their batteries to 80 percent then let them drain to about 40 percent. This will prolong the life of your battery ó in some cases by as much as four times. The reason is that each cell in a lithium-polymer battery is charged to a voltage level. The higher the charge percentage, the higher the voltage level. The more voltage a cell has to store, the more stress itís put under. That stress leads to fewer discharge cycles. For example, Battery University states that a battery charged to 100 percent will have only 300-500 discharge cycles, while a battery charged to 70 percent will get 1,200-2,000 discharge cycles."
--end quote



-jp

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