Internal lithium-ion laptop battery Lenovo FRU02DL009 50Wh

Internal 50Wh lithium‑ion battery Lenovo FRU02DL009 designed as a replacement or spare for compatible Lenovo laptops. This internal battery provides a rated capacity of 50 watt‑hours and fits into the device's internal battery bay to restore portable runtime. It is intended to meet standard laptop power requirements and offers a factory-specified nominal voltage and cell configuration suitable for models that accept this internal pack.

Advantages

The battery offers a compact internal design that preserves the laptop's original form factor while delivering the specified 50Wh capacity. As a lithium‑ion pack, it provides consistent discharge performance and a favorable energy‑to‑weight ratio for mobile use. Installation into the internal bay returns original battery operation without changing external appearance, and the battery is compatible with the laptop's built‑in charging and power management systems when used in supported models.

Suitable for

• Replacing a worn or failing internal battery in compatible Lenovo laptops
• Restoring original on‑battery runtime for travel and mobile work
• Keeping as a spare part for laptop maintenance and repair

Key specifications

• Chemistry: lithium‑ion (Li‑ion)
• Rated energy: 50 watt‑hours (Wh)
• Form factor: internal laptop battery pack designed for internal bay installation
• Compatibility: models designed to accept this internal pack and the laptop's native charging circuitry
• Typical use: supports standard laptop power and charging profiles

How to use

Power the laptop off and disconnect any external power source before beginning replacement. Access the internal battery bay according to the laptop manufacturer's service instructions, remove the old battery, and install the replacement pack ensuring correct alignment and secure connector seating. After installation, reconnect external power and allow the system to recognise and charge the new battery. It is recommended to perform a full charge cycle and allow the operating system to recalibrate battery level reporting if necessary.

Recommendations

Use manufacturer service guides for disassembly and reassembly to avoid damage. Do not attempt to force connectors or deform the battery pack; observe electrostatic discharge precautions. Store unused batteries in a cool, dry place and avoid prolonged exposure to high temperatures or humidity. Dispose of depleted batteries according to local regulations for battery recycling.