Checking operational charging

To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.

Perform operational charging. If the battery status indicator or icon does not turn on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon still does not turn on, replace the battery pack.

If the charge indicator still does not turn on, replace the system board. Then reinstall the battery pack. If it is still not charged, go to the next section.

Checking the battery pack

Battery charging does not start until the Power Manager Battery Gauge shows that less than 96% of the total power remains; under this condition the battery pack can charge to 100% of its capacity. This protects the battery pack from being overcharged or from having a shortened life.

To check your battery, move your cursor to the Power Manager Battery Gauge icon in the icon tray of the Windows taskbar and wait for a moment (but do not click), and the percentage of battery power remaining is displayed. To get detailed information about the battery, double-click the Power Manager Battery Gauge icon.

Note: If the battery pack becomes hot, it may not be able to charge. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it.

To check the battery pack, do the following:

1.Power off the computer.

2.Remove the battery pack and measure the voltage between battery terminals 1

(+) and 7 (-). See the following figure:

7(-)

6(-)

3 4 5

2(+)

1(+)

Terminal

Voltage (V dc)

1+ 0 to + 12.6

7Ground (-)

3.If the voltage is less than +11.0 V dc, the battery pack has been discharged.

Note: Recharging will take at least 3 hours, even if the indicator does not turn on.

If the voltage is still less than +11.0 V dc after recharging, replace the battery.

4.If the voltage is more than +11.0 V dc, measure the resistance between battery terminals 5 and 7. The resistance must be 4 to 30 K .

If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.

42ThinkPad X100e Hardware Maintenance Manual

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Lenovo 350828U, X100E manual Checking operational charging, Checking the battery pack

X100E, 350828U specifications

The Lenovo 350828U, also known as the ThinkPad X100E, represents an intriguing blend of performance, portability, and durability in the world of business laptops. Designed primarily for mobile professionals and students, the X100E is lightweight and compact, making it highly portable without sacrificing functionality.

One of the main features of the Lenovo X100E is its robust design. Built to meet military specifications for toughness, it can withstand a range of environmental conditions, including vibrations, low temperatures, and dusty environments. This ruggedness is paired with an ergonomic keyboard, which is a staple in Lenovo’s ThinkPad line. The keyboard is spill-resistant and engineered to provide a comfortable typing experience, crucial for long work sessions.

In terms of display, the X100E boasts an 11.6-inch LED backlit screen with a resolution of 1366x768 pixels. This compact size, combined with a bright display, ensures clarity and visibility in various lighting conditions. The screen is designed to minimize glare, further enhancing usability during outdoor or bright environments.

Under the hood, the Lenovo 350828U features options of AMD processors, providing a balance of efficiency and performance for everyday computing tasks like web browsing, document editing, and multimedia consumption. The integration of AMD graphics is particularly beneficial for those needing to handle light graphical applications or video playback seamlessly.

Connectivity options include USB 2.0 and 3.0 ports, HDMI, VGA, and an Ethernet port, along with a built-in webcam for video conferencing. The presence of Wi-Fi and Bluetooth ensures that users stay connected wirelessly, allowing for convenient access to network resources and peripherals.

Battery life is another critical aspect of the X100E, often lasting up to six hours on a single charge, making it suitable for users who need to work on the go without worrying about frequent recharging.

Additionally, the laptop supports various operating systems, with Windows being the primary choice, providing software versatility across different business environments.

In summary, the Lenovo 350828U, X100E, combines portability, durability, and performance in a compact form factor, making it a smart choice for professionals seeking a reliable mobile computing solution. With its solid build quality, impressive battery life, and comprehensive connectivity options, the ThinkPad X100E effectively meets the diverse needs of its users.