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Tips and Tricks > Improving Laptop Battery Performance

Improving Laptop Battery Performance

Below are some tips on how to improve the performance of your notebook battery.

Adjusting notebook battery power plans :
A power plan manages how your PC uses power through selected hardware and system settings. Power plans can save energy, maximize system performance, or achieve a balance.

To manage the power plan on Windows8:
Windows provides the following default plans to help you manage your power usage:
Power Plan:                                 Description:
Balanced (recommended)         Automatically balances performance with energy consumption.
Power saver                                 Saves power by reducing system performance. 
High performance                         Maximizes system performance and responsiveness.
Selecting a power plan in Windows 8:
To select a power plan, complete the following steps:

1. At the Start screen, type power options to open the Search field. Select Power Options in the       Search results.

Figure : Power Options 
2. In the Choose or customize a power plan window, select the power plan you wish to use.  

3. Close the Choose or customize a power plan window.

Changing a power plan in Windows 8:

You can change specific settings in any of the power plans. To change power plan settings, complete the following steps:

1. At the Start screen, type power options to open the Search charm. Type in Power Options and select Power Options in the Search results. 

2. Click Change plan settings next to the plan that you want to change.
3. On the Change settings for the plan window, choose the display and sleep settings that you want to use.

4. To change more power settings, click Change advanced power settings. 

5. On the Advanced settings tab, expand the category that you want to customize, expand each setting that you want to change, and then choose the values that you want to use. 

6. When done, click OK, and then click Save changes.

Figure 2

Creating your own power plan in Windows 8: 

You can create your own plan according to the performance you need from your computer. For example, to use your computer for watching movies, you might create a High Performance power plan named Movies, then switch to that plan when desired. Follow the steps below to create your own power plan.

1. At the Start screen, type power options to open the Search charm. Select Power Options in the Search results.
2. In the left pane, click Create a power plan. 
3. On the Create a power plan window, select a plan that has features you wish to use in the power plan you are creating, enter a name for the new plan in the Plan name box, and then click Next. 
4. Select the sleep and display settings you wish to apply and then click Create. The new plan displays in the Select a power plan window.
5. Close the Select a power plan window. 

Figure 3 
 Factors that decreases notebook battery capacity :

Lithium Ion (Li-Ion) battery cells suffer gradual, capacity loss with each discharge-charge cycle. Such aging occurs more rapidly as temperature and discharge loads increase.

The energy of a Li-Ion 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 in a depleted condition 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 (for example in a docking station under a heavy load) also accelerates the loss of capacity.

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.

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.

Reduce the brightness of the screen to the minimum readable level. 

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 uses the supply of power. You can extend the charge of your battery by slowing down your processor's speed. Methods to reduce processor speed vary from model to model; the User Guide should provide instructions for doing so.

Turn off the Wireless On-Off button when it is not in use. If your computer has one, press the Wireless On-Off button so that the light turns off.

Change the power option setting. Select either HP Recommended or Power saver to conserve battery power.

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