Laptop Battery

[Darth_Klein]

So lithium ion battery's have a finite number of charge and discharge cycles right? So I use my laptop a lot but 95% of the time it is plugged in sitting on my desk. So wouldn't it be better to just bypass my battery by taking it out and just using my laptop plugged in with no battery? Do modern laptops do this automatically in software so I don't need to do this? Last isn't it bad for a battery to just be sitting not being charged or depleted? 

[Peter Vaughan Truslow]

to get the longest life from a Li-ion battery it should be stored at a 70% charged state if it will be left uncycled for extended periods and should be cycled at least once each month. just discharge your laptop to 70% and take the battery out. your battery should last much longer than the upgrade cycle of a laptop if you do that and cycle it at least once every few months.

this is why often when you get a product with a Li-ion battery it is at about a 70% charge. the manufacturers know that this is when they are most stable(when the current voltage is near the specific battery chemistry's nominal voltage of about 3.6-3.7 volts) and that they will be most resistant to degrading over time in this state

[Peter Vaughan Truslow]

think of it as the goldilocks state of the battery. too low or dead is the worst way to store a Li-ion. fully charged is not as bad, but at about 70% the porridge is just right for storage.