2-power Main Battery Pack 15.4V 5550mAh Replaces L05766-850

With an 85.47Wh energy reserve, this 2-POWER battery pack keeps your HP laptop running through extended work sessions without hunting for a wall outlet. It delivers 15.4V and 5550mAh from four lithium-ion cells, engineered as a direct replacement for HP part L05766-850.

Overview

The 2-POWER Main Battery Pack is a new, rechargeable lithium-ion battery designed for HP notebooks that use the L05766-850 original battery. It provides stable 15.4V output and a 5550mAh capacity, giving you dependable power for everyday computing, presentations, and travel. The black housing matches the original design, so it fits perfectly in your device without adding bulk.

What stands out

• Direct replacement for HP part number L05766-850 – no compatibility guesswork.
• Built-in overcharge, over-discharge, and short circuit protection for safe, long-term use.
• Rechargeable lithium-ion chemistry with 4 cells for balanced performance.
• CE, RoHS, and FCC certified for quality and environmental compliance.
• Backed by a 1-year warranty for peace of mind.

Technical details

• Battery type: Lithium-ion (Li-ion)
• Voltage: 15.4 V
• Capacity: 5550 mAh
• Energy: 85.47 Wh
• Number of cells: 4
• Colour: Black
• Rechargeable: Yes
• Protection: Overcharge, over-discharge, short circuit
• Operating temperature: 0°C to 45°C
• Storage temperature: -20°C to 60°C
• Certifications: CE, RoHS, FCC
• Warranty: 1 year

Our verdict

A reliable, certified replacement battery that restores your HP laptop's mobility. The 85.47Wh capacity and robust protection circuitry make it a smart choice for professionals and students who need all-day power without compromise.