2-power Main Battery Pack Replaces L11421-542 - Batterie - 3.440 mAh

Laptop battery engineered to keep your HP notebook running through demanding workloads, delivering 39.2 Wh of dependable power in a compact 3-cell lithium-ion design. This replacement pack matches the fit and function of the original L11421-542 battery, restoring full mobility without the need for constant AC charging.

Advantages

Built with quality lithium-ion cells and integrated protection against overcharge, over-discharge, and short circuits, the battery maintains safe operation across daily charge cycles. Its 11.4 V output and 3440 mAh capacity provide consistent performance for office applications, streaming, and general computing. The black housing blends seamlessly with most HP laptop designs, and the internal form factor ensures a clean, secure installation.

Suitable for

• HP laptops originally equipped with the L11421-542 battery
• Users needing a reliable replacement for an aged or depleted original pack
• Professionals and students who require dependable battery life away from power outlets
• IT departments maintaining fleets of compatible HP notebooks

Key specifications

• Battery chemistry: Lithium-Ion (Li-Ion)
• Capacity: 3440 mAh
• Voltage: 11.4 V
• Energy rating: 39.2 Wh
• Number of cells: 3
• Replaces OEM part number: L11421-542
• Compatible brand: HP
• Colour: Black
• Protection: Overcharge, over-discharge, short circuit
• Certifications: CE, RoHS

Recommendations

For best results, fully charge the new battery before first use and perform a calibration cycle by running the laptop until it shuts down, then recharging to 100%. Store the battery at around 50% charge if it will not be used for an extended period.