A laptop battery's capacity and charging time decreases as it gets older, but a newer battery or a well-maintained battery will have a relatively steady charge time.
Types
Different types of batteries take shorter or longer periods to charge. The two main types are lithium-ion and nickel cadmium.
Considerations
Lithium-ion batteries provide the best performance but take longer to charge, while nickel cadmium batteries provide good performance and take a short time to charge. The problem with nickel cadmium batteries is the memory effect, where they lose their capacity over time.
Time Frame
Typically a laptop battery will be charged to 80 percent after one hour of charging time. Within two hours a full charge will be reached.
Potential
Letting your laptop battery run to its minimum and then charging it to its maximum capacity several times over will help keep the batteries full charge time down and capacity high.
Misconceptions
Often times a new battery will say it is fully charged after 10 to 15 minutes. This is a phenomenon that should be ignored.
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