Laptop battery Dell 42Wh Lithium-ion 3-cell 03KF82 for compatible Dell notebooks

Laptop battery Dell 42Wh Lithium-ion 3-cell 03KF82 for compatible Dell notebooks is a direct replacement battery intended to restore portable power to supported laptop models. It features a 42 watt-hour capacity and three-cell lithium-ion chemistry to provide standard runtime for everyday tasks, travel and mobile work. The pack is designed as an OEM-compatible replacement to fit into Dell notebooks that accept the 03KF82 form factor and electrical specifications.

Advantages

This Dell 42Wh lithium-ion battery delivers the nominal 42Wh capacity in a compact 3-cell configuration, offering a balance between weight and runtime. As an OEM-design compatible unit, it fits into compatible Dell notebooks without requiring modifications. The battery restores mobile operation for users who need a straightforward replacement to regain original runtime and mobility.

Suitable for

• Replacing a depleted or failing battery in compatible Dell notebooks
• Users who need reliable mobile runtime for everyday office and web tasks
• Travelers who require a lightweight spare battery for short trips
• Maintaining productivity when mains power is unavailable

Key specifications

• Capacity: 42 Wh
• Chemistry: Lithium-ion (Li-ion)
• Cell count: 3 cells
• Compatibility: compatible Dell notebook models accepting the 03KF82 battery form factor
• Type: replacement / OEM-compatible internal laptop battery

How to use

Power down the notebook and disconnect any external power sources before beginning installation. Remove the existing battery according to the notebook manufacturer's instructions or service manual, then install the Dell 42Wh 3-cell battery into the battery bay ensuring proper alignment and secure connection. Reconnect mains power and allow the system to recognize the new battery; perform a full charge cycle before first regular use to calibrate battery status reporting.

Recommendations

Use this battery only in Dell notebook models specified as compatible with the 03KF82 form factor. Keep the battery at moderate temperatures during storage and operation, avoid exposure to prolonged high heat, and follow standard safety guidelines for lithium-ion batteries. For optimal service life, charge and discharge the battery under normal operating conditions and replace the battery if you observe significant capacity loss or physical damage.