Battery Lenovo 3 Cell 11.25 V 42Wh 5B10T36868 for compatible Lenovo laptops

Rechargeable Lenovo 3 Cell battery with a nominal voltage of 11.25 V and energy capacity of 42 Wh is designed as a direct replacement or spare for compatible Lenovo laptops. The pack restores portable run time and supports everyday computing tasks such as web browsing, document editing and video playback. Its compact 3-cell design keeps weight and dimensions low while providing a balanced combination of energy density and safe operation.

Advantages

The battery offers stable voltage output and predictable discharge behaviour to help maintain system performance during unplugged operation. It is a manufacturer-designed replacement that fits specific Lenovo chassis and connector types, enabling a straightforward swap-in installation without need for system modifications. Built-in cell protection and standard charging compatibility reduce the risk of overcharging and help preserve battery life when used with the original laptop charger and charging circuitry.

Suitable for

• Replacing a worn or failed battery in compatible Lenovo laptops
• Carrying as a spare for travel, business trips or remote work
• Restoring mobile runtime for everyday productivity tasks
• Students and professionals needing stable, portable power

Key specifications

• Cell count: 3-cell configuration
• Nominal voltage: 11.25 V
• Energy capacity: 42 Wh
• Form factor: internal laptop battery pack designed for specific Lenovo models
• Compatibility: fits Lenovo laptops that accept this 3-cell 11.25 V 42 Wh pack and matching connector type

How to use

Power down the laptop and disconnect the external charger before replacing the battery. Remove the service hatch or bottom cover following the laptop manufacturer’s instructions, then release any battery retention clips or screws. Carefully disconnect the battery cable from the motherboard and lift the old pack out. Place the replacement battery in the same orientation, connect the battery cable securely to the board and reassemble the chassis. After first installation, charge the battery to full capacity using the original Lenovo charger and charging circuitry to allow the battery gauge to calibrate.

Recommendations

Use the battery with approved Lenovo chargers and avoid exposing the pack to extreme temperatures. Store at approximately 40%–60% charge for longer storage periods, and perform regular charge cycles if the laptop remains unused for extended times to help maintain cell health. If you observe unusual heat, swelling, or performance loss, stop use and consult authorised service support.