How long should my new rechargeable Laptop battery last?

How long should my new rechargeable Laptop battery last?

he life of a battery under normal use is around 500 to 600 charge-discharge cycles. This is about one and a half to three years of battery life for the average user. As the rechargeable battery begins to fail, the running time of the battery begins to decline. When a battery supplies thirty minutes of charge, it is time for a replacement.