Lenovo 5b11f29413 Laptop Battery 4 Cell 99.99 Wh

Product Description

The LENOVO 5b11f29413 is a 4-cell lithium-ion laptop battery rated at 99.99 watt-hours (Wh) and 15.52 volts. It carries internal part reference L21M4PE1 and is designated as a service-part assembly (SP/A), meaning it is intended for depot-level or field replacement rather than retail sale. Technicians use this battery when the original unit shows capacity loss, fails to charge, or is physically damaged. The high-capacity 99.99 Wh rating supports extended runtimes in Lenovo notebooks designed for this battery platform.

This battery is used in Lenovo notebook systems that originally shipped with the L21M4PE1 battery assembly. It is suited for service-center and on-site repair scenarios where the end user requires a direct OEM-part replacement rather than a third-party alternative. Installation is typically performed by a qualified laptop repair technician.

Key Features

• 4-cell lithium-ion design rated at 99.99 Wh for high-capacity runtime
• Operating voltage of 15.52 volts matches original equipment specification
• Internal part reference L21M4PE1 for cross-referencing service documentation
• Designated SP/A (Service Part Assembly) for depot and field replacement use
• OEM replacement maintains compatibility with original charging circuits

Compatibility

Designed as an OEM-style replacement for Lenovo notebook systems that originally shipped with the L21M4PE1 battery assembly. Verify the internal battery part number against the service manual before ordering.

Installation Notes

Battery replacement in laptop systems should be performed by a qualified technician following the manufacturer service documentation. Power down the system completely and disconnect any AC adapter before beginning disassembly. Use appropriate ESD precautions and non-conductive pry tools to avoid damage to surrounding components. Dispose of the removed battery in accordance with local regulations governing lithium-ion battery recycling.

Technical Specifications

• Cell Count: 4 cells
• Capacity: 99.99 Wh
• Voltage: 15.52 volts
• Internal Part Reference: L21M4PE1
• Part Type: Service Part Assembly (SP/A)

Standard Information

• Brand: LENOVO
• Manufacturer Part Number: 5b11f29413