Lenovo 59360210 Using the ac power adapter, Charging the battery, Maximizing the battery life

Page 30

•The way you use your computer: how often you access the hard disk drive, how bright you make the computer display.

Using the ac power adapter

The power to run your computer can come either from the lithium-ion battery pack provided with it, or from ac power through the ac power adapter. While you use ac power, the battery charges automatically.

The ac power adapter has two basic components:

1.The transformer pack that converts ac power for use with the computer.

2.The power cord that plugs into the ac outlet and into the transformer pack.

Attention: Using an improper power cord could cause severe damage to the computer.

Connecting the ac power adapter

To connect the ac power adapter, do the following:

1.Plug the power cord into an electrical outlet.

2.Connect the power cord to the transformer pack.

3.Insert the power jack into the computer.

Tips on using the ac power adapter

When using the ac power adapter, observe the following guidelines:

•When the ac power adapter is not in use, disconnect it from the electrical outlet.

•Do not bind the power cord tightly around the ac power transformer pack when it is connected to the transformer.

•Before you charge the battery, make sure that its temperature is at least 10°C (50°F).

•You can charge the battery when the ac power adapter is connected to the computer and the battery is installed.

Charging the battery

When you find that the battery power is low, you need to charge the battery or replace it with a fully charged one.

You are recommended to charge the battery in any of the following situations:

•When you purchase a new battery

•If the battery status indicator starts blinking

•If the battery has not been used for a long time

Notes:

•You are advised to install the battery pack when using your computer to prevent small particles from entering the inside of your computer.

•To maximize the battery life, do not start recharging the battery immediately after it drops from full charge.

•Charge the battery at a temperature between 50 °F and 86 °F (10 °C-30 °C).

•Full charge or discharge is not required.

Maximizing the battery life

To maximize the life of a new battery or a battery that you have not used recently, do either of the following:

16User Guide

Page 29 Page 31
Image 30
Page 29 Page 31
Contents User Guide Lenovo B475e and B575eSafety, Warranty, and Setup Guide Regulatory Notice Contents Appendix D. Notices Prevent your computer from getting wet Read this firstProtect yourself from the heat that your computer generates Protect the cables from being damagedConditions that require immediate action Important safety informationProtect your computer and data when moving it Handle your computer gentlySafety guidelines Service and upgradesPower cords and power adapters Extension cords and related devicesPlugs and outlets Power supply statement General battery noticeExternal devices Rechargeable battery notice Lithium coin cell battery noticeHeat and product ventilation Electrical current safety information Laser compliance statementUsing headphones or earphones Additional safety informationLiquid crystal display LCD notice Xii User Guide Getting to know your computer Top viewRecovery button Wireless module antennasPower button Status indicatorsLeft-side view USB 3.0 connector Lenovo B575e left-side viewHeadphone jack USB 2.0 connectorsRight-side view Microphone jackFront view Media card reader slotBottom view Lenovo B475e bottom viewBattery Status indicatorsBattery lock Battery latchFeatures Specifications Getting to know your computer User Guide Using your computer Frequently asked questionsConfiguring the operating system Tips on using your computerConnecting to power Reading the manualsPutting the computer into sleep mode or shutting it down Using the ac power adapter and the battery packChecking the battery status Maximizing the battery life Using the ac power adapterCharging the battery Connecting the ac power adapterHandling the battery Using the touch padLenovo B475e and B575e touch pad Using the recovery button Using the keyboardNumeric keypad Function key combinations Launching the camera settings Fn+EscPower conservation Fn+F1 For Lenovo B475e modelsVolume keys Fn+ left/right arrow Switching the display output location Fn+F3Adjusting display brightness level Fn + up/down arrow Display backlight control Fn+F2Using the media card reader Inserting an SD cardRemoving an SD card Hardware connection Connecting to the networkWired connection CableSoftware configuration Wireless connectionConnecting to the network User Guide Accessibility and comfort You and your computerErgonomic information What if you are traveling? Using passwords SecurityAttaching a mechanical lock User Guide Recovery overview Solving recovery problems on the Windows 7 operating systemUser Guide Recovery overview User Guide Replacing the battery Replacing devicesStatic electricity prevention Replacing the backup battery Lenovo B475e Lenovo B575e Prerequisites for the procedure Replacing the hard disk driveUser Guide Lenovo B575e User Guide Replacing a memory module Lenovo B575e Replacing devices Lenovo B475e Lenovo B575e User Guide Removing the optical drive User Guide Preventing problems General tips for preventing problemsBe gentle with your computer Be careful about where and how you workTaking care of your computer Carry your computer properlyHandle storage media and drives properly Take care in setting passwordsClean the cover of your computer Data protectionRegistering your computer Cleaning your computer keyboardCleaning your computer display Be sure not to modify your computerBattery and power problems Troubleshooting computer problemsTroubleshooting Battery problemsStartup problem Computer screen problemsAn ac power adapter problem Sleep and hibernation problemsProblems with drives and other storage devices Hard disk drive problemsOneKey Recovery Pro program problems Password problemOptical drive problems Your computer does not respond Sound problemOther problems Computer does not start from a device you wantUser Guide Wireless related information Wireless interoperabilityAppendix A. Regulatory information Export classification notice Electronic emission noticesUsage environment and your health Industry Canada Class B emission compliance statement User Guide Appendix B. Weee and recycling statements China Weee statement Important Weee InformationJapan recycling statements Recycling information for Brazil Disposing of Lenovo computer componentsBattery recycling information for the European Union User Guide China RoHS Turkish RoHS Ukraine RoHSIndia RoHS Appendix D. Notices Energy Star model information TrademarksAppendix D. Notices
Top Page Image Contents