2-power Main Battery Pack Replaces L11421-1C1 - Batterie - 3.440 mAh

If your HP Pavilion laptop shuts down unexpectedly or refuses to hold a charge, the original battery has likely reached the end of its service life. The 2-POWER Main Battery Pack is a direct replacement for HP part number L11421-1C1, restoring reliable all-day mobility without the cost of an OEM unit. It delivers 3440 mAh at 11.55 V, matching the original specifications for seamless compatibility.

Who is it for

This battery is ideal for students, professionals, and home users who own an HP Pavilion 14-CE, 15-CS, 15-DA, 15-DW, or 17-BY series laptop and need a dependable power source for work, study, or entertainment on the go. It is also a practical choice for IT departments maintaining fleets of these popular notebooks.

Main features

• Replaces HP original battery L11421-1C1
• 3440 mAh capacity for extended runtime
• 11.55 V output, 41.7 Wh energy
• 3-cell Lithium-Ion construction
• Built-in protection against overcharge, over-discharge, over-current, and short-circuit
• CE and RoHS certified for safety and environmental compliance

Specifications

• Brand: 2-POWER
• Model: ALT283634B
• Battery type: Lithium-Ion (Li-ion)
• Capacity: 3440 mAh
• Voltage: 11.55 V
• Energy: 41.7 Wh
• Number of cells: 3
• Colour: Black
• Rechargeable: Yes
• Compatible with HP Pavilion 14-CE, 15-CS, 15-DA, 15-DW, 17-BY series

Tips

To maximise battery lifespan, fully charge and discharge the battery for the first three cycles. Avoid exposing the laptop to extreme temperatures, and store the battery at around 50% charge if not used for extended periods. Always verify your laptop model and original battery part number before ordering.