Internal Lithium-Ion Battery Lenovo 39.3Wh model 5B11M90024 for compatible laptops

Internal lithium-ion battery Lenovo 39.3Wh model 5B11M90024 is designed as a direct replacement for compatible Lenovo laptops. It offers 39.3 watt-hours of stored energy to restore mobile runtime and integrate into the internal battery bay form factor used by specific laptop models. The battery is intended to match original power delivery characteristics and physical fitment for a straightforward swap when restoring battery capacity.

Advantages

This internal Lenovo battery provides a nominal 39.3Wh capacity that helps return portable operation to laptops whose original battery no longer holds sufficient charge. The chemistry and internal design follow typical lithium-ion standards for consistent voltage and recharge behaviour, enabling compatibility with built-in charging circuitry. As an internal spare, it eliminates the need for external packs and preserves the laptop's original profile and weight distribution.

Suitable for

• Replacing an aged or failing internal battery in compatible Lenovo laptops
• Restoring reasonable runtime for daily office, web browsing and light multimedia use
• Repair shops and technicians performing battery maintenance or component replacement
• Users who require an OEM-specified internal spare to maintain original fit and charging behaviour

Key specifications

• Battery type: internal lithium-ion
• Rated energy: 39.3 watt-hours
• Form factor: internal flat pack designed for Lenovo internal battery bay
• Typical use: laptop power source for mobile operation and short-term runtime extension

How to use

Power down the laptop, disconnect any external power source and follow the manufacturer’s service instructions for accessing the internal battery bay. Remove the old battery by disconnecting the internal connector and any retaining screws or clips, then install the replacement by aligning it in the battery compartment and securing connectors and fasteners. Reconnect external power and charge the battery fully before first use to allow the laptop’s battery management system to calibrate.

Recommendations

Use the battery only in compatible Lenovo models and follow safety guidance: avoid exposure to high heat, physical damage, or liquid. Store at moderate charge (around 40–60%) for long-term storage, and recycle the battery according to local regulations at end of life.