2-power pääakku 57Wh - akku - 4.878 mAh (2P-66DWX)

Laptop battery delivering 57 Wh of reliable power for extended mobile productivity. This main battery pack integrates a 4878 mAh lithium-ion cell configuration, engineered to keep compatible notebooks running through demanding workdays. With a nominal voltage of 11.4 V, it provides stable output for consistent performance. The black housing is designed for a secure fit in the device's battery bay, ensuring a seamless replacement or spare unit.

Advantages

Built with lithium-ion chemistry, this battery offers a high energy density and low self-discharge, so it retains charge during storage. Multiple safety protections—including overcharge, over-discharge, short-circuit, over-current, and over-temperature safeguards—protect both the battery and the laptop. The 57 Wh capacity supports longer runtimes compared to lower-capacity replacements, reducing the need for frequent recharging. The 4878 mAh charge capacity ensures a balanced combination of runtime and weight, making it ideal for users who need dependable power without excessive bulk.

Suitable for

• Professionals who rely on their laptop for full-day work away from power outlets
• Students and remote workers needing a spare battery for extended use
• Users replacing a worn-out original battery to restore original runtime
• Anyone seeking a cost-effective alternative to OEM batteries

Key specifications

• Battery technology: Lithium-Ion (Li-Ion)
• Energy capacity: 57 Wh
• Charge capacity: 4878 mAh
• Nominal voltage: 11.4 V
• Rechargeable: Yes
• Product colour: Black
• Safety features: Overcharge protection, over-discharge protection, short-circuit protection, over-current protection, over-temperature protection
• Operating temperature (charging): 0°C to 45°C
• Operating temperature (discharging): -20°C to 60°C
• Storage temperature: -20°C to 45°C

Recommendations

For optimal performance, fully charge the battery before first use and calibrate it periodically by fully discharging and recharging. Store the battery in a cool, dry place when not in use for extended periods. Always verify compatibility with your laptop model before purchase to ensure a proper fit and electrical match.