Most laptop batteries are made from lithium. Scientists have to locate a source of lithium. There is a high source of lithium in salt water that is close to a source of volcanic activity. Once they find such a spot, the water is put in salt pools for the sun to evaporate the water. When it gets to a thick brine. Then it is sent to a processing plant until it's made into powder form.
That's not the end. It's mixed with other substance and rolled into sheets. The sheets are rolled up into a battery Then it's charged. Alkaline batteries can do this only once, but lithium has the property of being able to be recharged many times. That is why they are using it for car batteries now.
So you see the technology is complicated and it takes a lot of scientists a long time to come up with that 100$ battery. So, next time, don't complain as much when you shell out that benjamin for your laptop.
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