DELL 05R42 Laptop Spare Part Battery

The DELL 05R42 is a 3-cell lithium replacement battery for compatible Dell laptops, providing up to 42 WHr of capacity to maintain device operation when away from a mains power source. Designed as a spare part, this black battery matches original equipment specifications to ensure compatibility and reliable power delivery.

Advantages

The lithium chemistry offers a balance of energy density and weight, while the 42 WHr capacity supports typical mobile usage between charges. As an OEM-compatible spare part, the battery is intended to fit specified Dell laptop models and restore portable power without altering device performance.

Suitable for

• Replacing a worn or failed battery in compatible Dell laptops
• Keeping a laptop operational during travel or mobile work
• Maintaining productivity when AC power is not available

Key specifications

• Manufacturer: Dell (MPN 05R42)
• Battery technology: Lithium
• Cell count: 3-cell
• Capacity: up to 42 WHr
• Colour: Black
• Category: Batteries for portable devices
• EAN: 5715063109977

How to use

Power down the laptop and disconnect any external power source before removing the existing battery. Follow the laptop manufacturer's instructions to release and remove the original battery, then install the DELL 05R42 by aligning contacts and securing it in place. After installation, charge the battery fully before first use and check system battery status via the operating system or BIOS.

Recommendations

Store and use the battery at moderate temperatures, avoid exposure to extreme heat or moisture, and dispose of the battery according to local regulations for lithium batteries. For optimal performance, cycle the battery occasionally and keep firmware or power-management drivers up to date.