Quote:
Originally Posted by elvenic
So, if I understand this correctly, the Sony's PRS-600 battery will die after 300-400 charge-discharge cycles.
Does it mean that every time I connect/disconnect the device to the computer via USB cable, I start new charge-discharge cycle? So if I use Calibre to download newspaper feeds and connect the PRS-600 to the computer every morning to copy those feeds to the device (which means I connect/disconnect it at least once a day), will the battery die in approx. 1 year?
If I connect/disconnect the device 2 times a day, will the battery die in 6 month?
(Horror: if some day I connect/disconnect 300 times, will the battery die next morning?)
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No. It doesn't mean that... it is physically talking about the actual charge/discharge cycles of each cell in the battery.
If we assume the battery has one cell, and I let it run to 50%, and charge it back up, that is 1/2 a charge cycle roughly. Other behaviors will actually lengthen the life of the battery (keeping it above 50% in the case of LiIon and LiPoly batteries), and others will shorten it (deep discharging the same LiIon/LiPoly battery).