Laptop battery Lenovo 38Wh 2-cell lithium-ion, model 5B11N45970

Replacement laptop battery Lenovo 38Wh 2-cell lithium-ion, model 5B11N45970 is a direct-fit power module designed to restore portable runtime for compatible Lenovo notebooks. The battery uses a two-cell lithium‑ion configuration with a rated capacity of 38Wh and supports standard charging cycles and system-level power management used in Lenovo devices. It is intended as a replacement part to match original battery specifications and maintain expected runtime and compatibility with the notebook's battery monitoring and charging circuitry.

Advantages

This 38Wh 2-cell lithium‑ion battery provides a balance between compact size and usable runtime for mobile work. The battery is engineered to integrate with the notebook's power management system to report charge status and remaining runtime. Its form factor and connector placement match compatible Lenovo notebooks, enabling straightforward replacement without modifications. The chemistry and cell count offer predictable discharge and recharge behavior consistent with typical laptop usage patterns.

Suitable for

• Replacing a worn or degraded battery in compatible Lenovo notebooks
• Extending mobile runtime for travel or remote work
• Restoring original power capacity for everyday computing and productivity
• Use in maintenance or refurbishment of Lenovo laptops

Key specifications

• Capacity: 38Wh (watt-hours)
• Cell configuration: 2-cell lithium‑ion
• Chemistry: lithium‑ion
• Typical application: internal laptop battery for compatible Lenovo notebook models
• Compatibility considerations: designed to match original battery physical dimensions, connector type, and power-management signaling

How to use

Power the notebook down and disconnect any external power source before replacing the battery. Remove the service panel or battery compartment cover according to the notebook manufacturer's instructions, then disconnect the existing battery cable from the motherboard and remove the old battery. Install the replacement battery by seating it in the compartment and reconnecting the battery cable, then reattach the cover and secure any screws. After assembly, plug in the AC adapter and allow the system to detect the new battery; battery status and charge level will be available through the operating system or system firmware interface.

Recommendations

For optimal performance, calibrate the battery by fully charging and then fully discharging once every few months, and avoid prolonged storage at full charge or deep discharge. Use the notebook's original AC adapter for charging and follow manufacturer safety instructions for handling lithium‑ion batteries, including avoiding physical damage, exposure to high temperatures, and contact with liquids.