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When you do something processor intensive, plug in the charger. Not only because this usually triggers a higher performance setting and give you more horse power to play with, but because when the battery is discharged at maximum rate it's more probable to overheat, and heat is a great enemy of Lithium-Ion.
Use cobalt ontario the battery. Li-Ion safety circuits do a lot of great things to keep it in good condition, but they're going to go south if you don't use them. There is no wonder they're stored charged to half-capacity. If you most often use your netbook using AC power while you're at home, make sure that you let it run to the point where windows gives critical battery level warning at least two or three times a week.
Batteries - Many of the battery products found at the dollar stores are made with carbon zinc, as opposed to lithium, so they do not last as long. Carbon zinc can also leak, thus doing damage to your electronics.
More discounts on hybrid cars are already being seen. The reasons I see for this are federal tax credits are lapsing production costs are coming down there's more competition sales goals are still Lithium battery stocks high and getting higher and inventory is up.
ONickel Metal Hydride (NiMh) - Popular battery about 1-2 years ago. They are lighter than Nickel Cadmium batteries, but heavier than Lithium mines Ontario batteries. These should be cycled once in a while for optimum performance.
So how long does it last? Anything from 3 to 9 years if you search this question on Google. Everyone has a different opinion. In my experience about 6 years is the average. It's basically a large watch battery and is constantly supplying a trickle of power to the motherboard. Just like many of my watches the battery can last 2 years or up to 6 years (Fossil watches don't seem to last long for me for some reason). How long was the PC in the warehouse before it was delivered? And, how long was the motherboard in the warehouse before it was installed in the PC?
Recharge the battery to full again and repeat the above steps a few more times. This will allow you to use the battery for a longer time and you can do this no more than once a month. Replacement batteries can be expensive and stretching out their use when you are on a budget can help.