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HP Notebook PCs - Improving Battery Performance (Windows 10, 8, 7, Vista)

This document pertains to HP Notebook PCs with Windows 10, 8, 7, and Vista.
Notebook computers operate on two kinds of power: A/C power (plugging a power adapter into a wall outlet) and D/C power (battery power). Get the most service and life from the battery by following these suggestions.
How long does a notebook battery last?
The maximum charge capacity of every battery decreases over time and with use. The rate at which this capacity decreases can vary depending on product configuration, product model, operating system, type of software used, power management settings, and other factors.
Adjusting notebook battery power plans
A power plan is a collection of hardware and system settings that manages how your computer uses power. Power plans can help you save energy, maximize system performance, or achieve a balance between the two. Learn more about power plans by reading one of the following support documents that matches the Windows operating system on your notebook:
In Windows 10, search for power, and click Choose a power plan to learn more about, customize, and choose a power plan.
After reading, adjust the power plan settings for your notebook.
Factors that contribute to loss of notebook battery capacity
The power capacity of notebook batteries decreases over time. The way a battery is used also affects battery capacity.
  • Battery cells suffer gradual, irreversible capacity loss with each discharge-charge cycle. Such aging occurs more rapidly as temperature and discharge loads increase.
  • The energy of a battery decreases even when the battery is left in an unpowered computer.
  • During prolonged storage or non-use, the battery charge can decrease below its recommended low-voltage level.
  • Leaving the battery depleted for an extended period can cause the battery to go into a low-voltage condition and become unusable. Leaving the battery at a high level of charge in a high-temperature environment for extended periods also accelerates the loss of capacity.
  • Using software for graphics processing or high-definition video accelerates the loss of capacity. For example, playing 3D games lowers full charge capacity faster than using word processing applications.
Recommended notebook battery care practices
Recommendations for battery usage and storage are covered in the user guide for your computer.
Additional battery care practices are as follows:
  • Store batteries between 20°C and 25°C (68°F and 77°F), with 70 percent charge.
  • Do not disassemble, crush, or puncture a battery; do not short the external contacts on a battery.
  • Do not leave batteries exposed to high temperatures for extended periods. Prolonged exposure to heat (inside a hot car, for example) accelerates the deterioration of cells.
  • Discharge the battery to 70 percent and remove the battery if you plan to store the computer (turned off and not plugged into AC power) for more than one month.
  • For prolonged battery storage, check the capacity every six months and recharge to 70 percent.
  • If you have a choice of battery types to use with your computer, use the type of battery with the highest capacity rating.
  • To maintain the battery, run Battery Check in the HP Support Assistant once a month.
  • Calibrate the battery based on the results shown in HP Support Assistant. Under normal usage, batteries should be calibrated a minimum of once every 2-3 months; however, a battery that is rarely discharged fully should be calibrated about once a month.
  • Batteries can be a choking and poison hazard. Keep the battery away from children.
  • For best performance, use only the battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased as an accessory.
Special recommendations for embedded (not customer replaceable) notebook batteries
If the battery is embedded in your computer, HP recommends the following practices:
  • If the computer is unused for more than three months, discharge the battery to about 70% before storing. For prolonged storage, check the battery capacity every six months and recharge it to 70 percent. Always store the computer between 20ºC and 25ºC (68ºF and 77ºF).
  • If the computer is run primarily on AC power, allow the battery to discharge completely and recharge once per month.
Tips for conserving notebook battery power
Use these tips to change the power consumption of the computer to conserve battery power.
  • Reduce the number of open applications. Each open software application uses memory and power, even when the application window is minimized. Close software applications to conserve battery power.
  • Reduce the brightness of the screen to the minimum readable level. Use the Fn and F7 or F8 keys to adjust the brightness.
  • Remove peripherals when not in use. External hard drives, CD-ROMs, Zip drives, PC cards, and other peripheral devices can draw power from your battery even when they are not in active use. Disconnect them when you are finished using them.
  • Reduce the speed of your processor. The faster your computer works, the more quickly it depletes battery power. You can extend the charge of your battery by slowing down the processor speed.
  • Turn off wireless. If your computer has one, press the Wireless On-Off button so that the wireless and wireless light turn off.
  • Change the power option setting. Select either HP Recommended or Power saver to conserve battery power.








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