Lenovo 3347XF2 Using the ac power adapter, Charging the battery, Maximizing the battery life

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Charging the battery

When you find that the percentage of power remaining is low, for example, the battery alarm goes off, you need to charge your battery by connecting your computer to ac power. The battery will be fully charged in about six hours. This is affected by the battery size and the physical environment.

To increase the life of the battery, the computer does not start recharging the battery if the remaining power is greater than 95%.

Maximizing the battery life

To maximize the life of the battery, do the following:

Use the battery until the charge is completely depleted; that is, use the battery until the battery status indicator starts blinking orange.

Recharge the battery completely before using it. The battery is fully charged if the battery indicator shows green.

Always use power saving mode.

Using the ac power adapter

The power to run your computer can come either from the lithium-ion (Li-ion) battery pack provided with it, or from ac power through the ac power adapter.

The ac power adapter that came with your computer has two basic components:

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

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 your computer.

Connecting the ac power adapter

To use the ac power adapter, do the following:

Note: Be sure to perform the steps in the given order.

1.Plug the ac power adapter into an ac 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 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 adapter transformer pack when it is connected to the transformer.

Before you charge the battery, ensure 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. You need to charge it in any of the following conditions:

When a new battery is installed

If the battery charge is low

If the battery has not been used for a long time

Chapter 2. Using your computer 25

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Contents User Guide Second Edition December Copyright Lenovo Safety, Warranty, and Setup Guide Regulatory NoticeContents Preventing problems Protect the cables from being damaged Read this firstProtect yourself from the heat that your computer generates Prevent your computer from getting wetCarry your computer carefully Important safety informationProtect your computer and data when moving it Handle your computer gentlySafety guidelines Service and upgradesConditions that require immediate action Power cords and power adapters Vii Power supply statementExtension cords and related devices Plugs and outletsExternal devices General battery noticeBuilt-in rechargeable battery notice Lithium coin cell battery noticeHeat and product ventilation Liquid crystal display LCD notice Electrical current safety informationAdditional safety information Using headphones or earphonesXii User Guide Locating computer controls, connectors, and indicators Product overviewFront view Built-in microphones Volume control buttonsSystem status indicator illuminated ThinkPad logo Integrated cameraHard disk or solid-state drive bay USB 3.0 connectorMini DisplayPort connector Right-side viewLeft-side view Media card reader slot Mini Hdmi connectorEthernet connector Combo audio jackBottom view Status indicatorsSystem status indicators Integrated batteryPower status indicator Machine type and model label Locating important product informationFCC ID and IC Certification number label FeaturesSpecifications Lenovo programs Battery packBattery life Operating environmentLenovo Support Password Manager Lenovo SettingsLenovo Mobile Access Lenovo Solution CenterUsing your computer Frequently asked questionsRegistering your computer Need to attach or replace a device? Tablet modeUsing tablet mode Is getting connected in different locations a challenge?Using your computer Tips on using your computer in tablet mode Using the multi-touch screen Cleaning the multi-touch screen Tips on using the multi-touch screenSpecial keys and buttons Using the tablet buttonsFunction keys Volume and mute keys Display management keysOther functions Windows key Using the UltraNav pointing deviceSelect Config Keyboard/Mouse Change to F1-F12 keys Changing the UltraNav pointing device settingsUsing the TrackPoint pointing device Customizing the TrackPoint pointing deviceChanging the cap Using the touch pad Disabling the UltraNav pointing deviceCustomizing the touch pad Adding the UltraNav icon to the Windows notification area Power managementUsing the battery power Checking the battery statusConnecting the ac power adapter Using the ac power adapterCharging the battery Maximizing the battery lifeClick More power options Managing the power plansPower-saving modes Connecting to the networkWireless connections Using the wireless LAN and wireless WAN connectionsEthernet connections Changing the display settings Using BluetoothPresentations and Multimedia Using an external display Considerations for using an external monitorSetting the main display Set Resolution Click Advanced Settings Using a projectorUsing audio features Setting the monitor typeConfiguring camera settings Using the integrated cameraUsing a media card Configuring for sound recordingRight-click the Safely Remove Hardware and Eject Media icon Inserting a media cardRemoving a media card Click Hardware and Sound Device ManagerAccessibility and comfort You and your computerErgonomic information Comfort Accessibility informationAssistive technologies Travel accessoriesTraveling with your computer Travel tipsUser Guide Security Using passwordsPasswords and sleep mode Typing passwordsSelect Power-on Password Power-on passwordHard disk passwords Setting a power-on passwordSelect Hard Disk 1 Password Setting a hard disk passwordChanging or removing a hard disk password Supervisor passwordSelect Supervisor Password Setting, changing, or removing a supervisor passwordHard disk security Using Windows BitLocker Drive EncryptionSetting the security chip Setting the security chipClick System and Security BitLocker Drive Encryption Protecting data against viruses Using firewallsSecurity User Guide Refreshing your computer Recovery overviewUser Guide Static electricity prevention Disabling the built-in batterySelect Disable Built-in Battery Replacing devicesUser Guide Replacing the hard disk drive or solid-state drive User Guide Replacing the keyboard User Guide Replacing devices User Guide Replacing a Mini PCI ExpressCard for wireless LAN connection User Guide Replacing devices Installing or replacing the wireless WAN card Replacing devices User Guide Replacing devices User Guide Select Startup Boot Advanced configurationInstalling a new operating system Installing the Windows 8 operating systemInstalling device drivers ThinkPad Setup Installing the Windows 8 fix moduleMain menu Config menu Menu item Submenu item Selection Comments NetworkAC Only Enabled Menu item Submenu item Selection CommentsIPv4 First Keyboard/Mouse DisabledDefault AutoThinkPad LCD PowerBattery Optimized Always Menu item Submenu item Selection Comments DisplaySerial ATA Sata Menu item Submenu item Selection Comments Beep and AlarmDate/Time menu Security menuAt unattended boot, a password Menu item Submenu item Selection Comments PasswordUefi Bios Update Option Disabled, the Security Chip optionBios ROM String Reporting Smbios Reporting SmbiosPort Access Menu item Submenu item Selection Comments VirtualizationAnti-Theft Uefi Only and set CSM Support Menu item Submenu item Selection Comments Secure BootStartup menu Changing the startup sequenceUEFI/Legacy Boot Priority Uefi First Menu item Selection Comments BootNetwork Boot UEFI/Legacy Boot Uefi OnlyBoot Order Lock Disabled Updating your system Uefi BiosUsing system management Menu item Selection Comments Boot Device List F12 OptionSystem management Setting management featuresFlash update Network Boot sequenceUser Guide General tips for preventing problems Preventing problemsGetting the latest drivers using System Update Making sure device drivers are currentGetting the latest drivers from the Web site Carry your computer properly Be careful about where and how you workTaking care of your computer Be gentle with your computerRegister your computer Be sure not to modify your computer Cleaning the cover of your computerTake care in setting passwords Cleaning your computer keyboardCleaning your computer display User Guide Computer stops responding Troubleshooting computer problemsDiagnosing problems TroubleshootingError messages Spills on the keyboardIf you spill something on your computer Troubleshooting computer problems Errors without messages Beep errors Memory module problemsProblem Solution Networking problems Ethernet problemsSolution Click Hardware and Sound Sound Playback Wireless LAN problemWireless WAN problem Bluetooth problemsProblems with the keyboard and other pointing devices UltraNav pointing device problemsKeyboard problems Computer screen problems Problems with the display and multimedia devicesExternal monitor problems Set Resolution Audio problems Battery problems Battery and power problemsPower problems An ac power adapter problemPower button problem Boot problemsSleep problems Optical drive problems Problems with drives and other storage devicesHard disk drive problems Solid-state drive problemSoftware problem USB problem Problems with ports and connectorsGetting help and service Getting supportBefore you contact Lenovo Using diagnostic programs Lenovo Support Web siteCalling Lenovo Purchasing additional services Finding ThinkPad optionsTelephone numbers User Guide 109 Wireless related informationWireless interoperability Appendix A. Regulatory informationUsage environment and your health Location of the UltraConnect wireless antennasFederal Communications Commission Declaration of Conformity Locating wireless regulatory noticesExport classification notice Electronic emission noticesGerman Class B compliance statement Appendix A. Regulatory information User Guide 115 Appendix B. Weee and recycling statementsImportant Weee information Japan recycling statementsBattery recycling information for the European Union Recycling information for BrazilDisposing of Lenovo computer components Appendix B. Weee and recycling statements User Guide 119 Power plan Energy Saver settings when plugged into ac powerAppendix C. Energy Star model information Click Hardware and Sound Device Manager Network adaptersClick OK 121 Appendix D. NoticesTrademarks China RoHS Turkish RoHS Ukraine RoHS123 India RoHS
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