Replacement laptop battery Lenovo 38Wh 2-cell lithium‑ion 5B11K24747

Replacement laptop battery Lenovo 38Wh 2-cell lithium‑ion 5B11K24747 is a compact power module designed to restore battery operation in compatible Lenovo notebook models. With a nominal capacity of 38 watt-hours and a two-cell lithium‑ion configuration, this replacement battery provides standard runtime for everyday tasks such as web browsing, document editing and light multimedia playback. The unit is intended as an OEM-style replacement to maintain original form factor, connection layout and charging compatibility with supported systems.

Advantages

The battery offers a balance of capacity and low weight suitable for ultraportable and mainstream laptops, delivering reliable voltage and predictable discharge characteristics typical of lithium‑ion cells. Its two-cell design keeps physical dimensions compact while providing enough energy for typical office and mobility use. As a direct replacement option, it simplifies swap‑out installation and helps avoid downtime caused by a depleted internal battery.

Suitable for

• Extending runtime for mobile office work and travel
• Replacing an aged or failing internal laptop battery
• Maintaining battery-powered operation for productivity applications
• Light multimedia use such as video playback and web streaming

Key specifications

• Battery chemistry: lithium‑ion (Li‑ion)
• Rated energy: 38 Wh
• Cell count: 2 cells
• Form factor: internal laptop module designed for specific Lenovo notebook bays
• Typical use: OEM replacement for supported laptop models requiring similar voltage and connector type

How to use

Before installation, power down the laptop and disconnect any external power source. Remove the access panel or back cover according to the laptop manufacturer's service instructions, then disconnect the old battery from its connector and remove any retaining screws or clips. Install the replacement battery by seating it in the compartment, securing any fasteners, and reconnecting the battery cable to the motherboard. Reassemble the laptop, connect the AC adapter, and allow the system to recognize and charge the new battery. Follow the laptop manufacturer's guidance on initial charge cycles if provided.

Recommendations

Store and use the battery within the temperature range specified by the laptop manufacturer. Avoid exposure to moisture, excessive heat, or physical shock. For optimal long‑term performance, perform occasional full charge/discharge cycles and keep firmware or power management drivers updated according to Lenovo guidance for the specific notebook model.