How Long Does the Battery for a HP Pavilion Dv7-1240Us Last?
- 1). Press the "Power" button to turn off the HP Pavilion DV7-1240Us laptop.
- 2). Insert the power adapter jack into the power adapter outlet on the computer. Plug the opposite end of the cord into a working electrical outlet.
- 3). Allow the power adapter to fully charge the battery. This process should take up to four hours.
- 4). Remove the power adapter from the computer. Press the "Power" button to turn the laptop on. Write down your start time.
- 5). Use the computer in a normal manner. Use the programs you normally do to get a more accurate time estimate. Some programs, such as video players and games, use more battery power than other programs, such as Word or email programs. Continue using the laptop until the battery dies. Write down the end time.
- 6). Compare the start time to the end time. This gives you an estimate on how long the laptop battery will run. If desired, you can repeat this process again using different laptop programs or settings to compare how the life of the battery is affected by different programs or settings. Also note that over time, the laptop battery will slowly lose efficiency. If it could power your laptop for two hours when it was brand new, it may only power it for 90 minutes after it has been used for a year. This is normal and there is no way to prevent it.
