What should be the ideal battery life for a laptop?
After the laptop has gone through a single full charge and the power adapter is unplugged, the average life of a laptop battery can be anywhere between four to six hours.
This time depends on the battery's capacity (), what's being done on the laptop, and how old the battery is.
Over time, the laptop battery's capacity decreases, which means the battery will not last as long as it did when you first got the laptop and will continue to decrease over time.