Battery Lenovo 3‑cell 11.4V 42Wh replacement battery 5B10T36867

Replacement laptop battery for Lenovo with nominal voltage 11.4 V and capacity 42 Wh, designed as a direct swap for compatible notebook models. This 3‑cell battery restores portable operation and extends runtime for everyday activities such as web browsing, office work and light multimedia playback. The unit is intended to match the original form factor and connector of supported Lenovo laptops to ensure proper fit and electrical compatibility.

Advantages

The 3‑cell 11.4V 42Wh battery provides a reliable balance between size, weight and runtime, offering standard power capacity for typical day‑to‑day use. Its design allows a straightforward replacement of the original pack, restoring battery life without requiring configuration changes. The battery supports portable use by supplying stable voltage under normal operating loads and is suitable for charging and discharging cycles typical of notebook usage.

Suitable for

• Replacing depleted or degraded batteries in compatible Lenovo notebooks
• Extending mobile runtime for travel, meetings and remote work
• Everyday tasks: web browsing, document editing and light media playback

Key specifications

• Cell count: 3 cells
• Nominal voltage: 11.4 V
• Rated energy capacity: 42 Wh
• Function: Rechargeable lithium‑ion battery for notebook use
• Form factor: OEM replacement pack designed to match original battery dimensions and connector type

How to use

Turn off the notebook and disconnect the power adapter before replacing the battery. Remove the existing battery following the laptop manufacturer’s instructions, align the replacement pack with the battery bay and connector, then secure it in place until it clicks or locks according to the device design. Reconnect the power adapter and perform an initial charge cycle if recommended by the laptop manual. After installation, verify battery recognition in the operating system and monitor charge level during first use.

Recommendations

For best results, use the battery with compatible Lenovo models and follow the laptop manufacturer’s guidance on charging practices, storage state and temperature limits. Avoid exposing the battery to extreme heat or cold, and store it partially charged if not used for extended periods. Dispose of used batteries in accordance with local regulations.