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  • Information
    Information regarding recent vulnerabilities

    HP is aware of the recent vulnerabilities commonly referred to as "Spectre" and "Meltdown". HP has published a security bulletin with patches for these issues and a list of impacted systems. We will continue to update the bulletin as more information becomes available and encourage customers to check the bulletin frequently.

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HP Notebook PCs - Improving Battery Performance (Windows)

This document pertains to HP notebook PCs with Windows 10, Windows 8, or Windows 7.
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.
Conserve 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 function keys to adjust the brightness or in the display settings in Windows.
Adjust 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. To adjust the power plan settings for your notebook, select one of the following documents:
In Windows, you can also search for power, and click Choose a power plan to learn about, customize, and choose a power plan.
Tips for conserving notebook battery capacity
The maximum capacity of the battery decreases over time and with use. Loss of battery capacity varies depending on the product configuration and usage, including but not limited to: product model, applications running, power management settings, and product features. The battery warranty does not cover natural deterioration of battery capacity. Your battery is warranted from defects in materials or workmanship resulting in failure. When contacting HP Customer Support, you might be required to run an HP diagnostic test to determine if your battery is covered under the warranty.
  • Battery cells suffer gradual, irreversible capacity loss with each discharge-charge cycle. Such aging occurs more rapidly as temperature and discharge loads increase.
  • The capacity 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. If the battery is at its low voltage, charge the battery for 1 hour, and then turn on the computer. If the computer does not turn on, the battery might not be recoverable.
    For prolonged battery storage, go the Battery storage recommendations section for the steps to put the computer into ship mode.
  • 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.
  • To protect the battery from multiple, brief charging sessions when you connect the power cord, the battery does not begin charging until the charge falls below 94%.
  • Using software for graphics processing or high-definition video accelerates the loss of capacity. For example, playing 3D games decreases capacity faster than using word processing applications.
  • Remove peripherals when not in use. External hard drives 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 laptop 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.
    To change the power plan settings for your notebook, select one of the following documents:
Notebook battery performance
Many factors can contribute to the battery performance:
  • Notebook use
    • Multiple applications in use
    • Applications with high battery usage
    • Prolonged storage or non-use of the notebook
    • Prolonged use of attached power
    • Display brightness setting
    • Backlit keyboard setting
    • Windows Power Plan setting
  • Battery age
    • Charging and discharging the battery (battery cycling)
  • Environmental operating temperature
    • Using the system in hot environments
  • System loading
    • High CPU system utilization. For example, high-end gaming, high-resolution video playback, multiple high system utilization processes running concurrently, etc.
    • Background processes (examples: Windows Update, Notification checks – email, weather, news, etc.)
    • Attached devices (phone, flash drive, printer, etc.)
  • Unpowered computer
    • The battery might still deplete even when the computer is not powered on
  • Notebook configuration
    • Processor
    • Type of storage
    • Resolution of display
For more information about battery performance, see the Understanding lithium-ion and smart battery technology section in this document.
Battery care practices
Recommendations for battery usage and storage are included 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, put the computer into ship mode, then check the battery charge every 3 months. If the battery charge falls below 50%, charge the battery to 70-90%, then repeat the steps to put them back into ship mode.
    For the steps to put the computer into ship mode, go the Battery storage recommendations section in this document.
  • 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 HP Support Assistant once a month.
    For more information about testing and calibrating the battery, go to Testing and Calibrating the Battery (Windows) for detailed steps.
  • Calibrate the battery based on the results displayed 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.
Recommendations for non-removable notebook batteries
Turn the computer over and look for a battery compartment door. If there is no battery compartment, HP recommends the following practices:
  • For prolonged battery storage, put the computer into ship mode, then check the battery charge every 3 months.
    To prepare your computer for prolonged storage, see the Battery storage recommendations section in this document.
  • 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.
If the battery does not work as expected and it is within warranty, you can contact HP support to confirm if your battery is covered under the warranty.
Battery storage recommendations
After storing a computer for several months, the battery might not work and cannot be recovered. If a battery remains unused long enough, the battery can reach a critical charge level. When a battery reaches its critical charge level, it no longer functions and cannot be recharged. This is a safety feature of the battery.
New computers use ship mode to minimize battery drain. Ship mode also allows the battery to remain viable longer than when the computer is turned off. However, the computer exits ship mode when it is turned on. If a computer must be stored for a long period of time, such as a school break, use the following steps to return the computer to ship mode before storing:
  1. Make sure to charge the battery to 70-90%.
  2. After the battery charges, turn off the computer.
  3. Press and hold the Windows and Backspace keys.
  4. While holding the Windows and Backspace keys, press the power button briefly, as you might when turning on the computer.
    The POST screen displays. The computer is now in ship mode.
  5. After the POST screen displays, let go of the keys, and then disconnect the power cord.
    The computer might power off immediately or continue booting to Windows. If the computer boots to Windows, shut down the computer manually.
To exit ship mode, plug in the power cord, then turn on the computer.
  note:
With long term storage, HP recommends checking the computer every 3 months to check the battery charge level. If the battery charge falls below 50%, charge the battery to 80-90%, then repeat the steps to put the computer back into ship mode.
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.
Understanding lithium-ion and smart battery technology
One of the most common questions asked by notebook computer customers is "How long does the battery last?" The answer is not simple. People inevitably discover that battery run time varies depending on how and where the notebook is used and sometimes does not last as long as predicted by the battery fuel gauge (Power Meter).
  note:
Battery life can vary depending on the product configuration, product model, applications loaded on the product, power management setting of the product, and the product features used by the customer. As with all batteries, the maximum capacity of the battery decreases with time and usage.

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