Battery 2-Power 11.1v 6 cell 57Wh Laptop Battery replaces 312-0822

The 2-Power 11.1V 6-cell 57Wh laptop battery (replaces 312-0822) is a rechargeable lithium-ion battery pack designed as a direct replacement for compatible laptop models. Built with high-grade cells and 2-Power's SmartWatch Protect circuitry, the battery delivers stable power, supports faster charging and helps protect the device from short circuits and overheating. With a nominal capacity of 57Wh (4400 mAh) and a compact weight of 0.335 kg, it offers a balance of runtime and portability for everyday mobile use.

Advantages

The battery uses quality lithium-ion cells to provide reliable discharge and recharge cycles and a consistent power output. SmartWatch Protect monitoring reduces risk of over-heating and short-circuit events during charging and discharging. The 6-cell design and 57Wh capacity deliver extended operating time compared with smaller packs, while the form factor matches replacement specifications for part number 312-0822 to ensure compatibility.

Suitable for

• Replacing a worn or failing 312-0822 laptop battery
• Extending unplugged run time for compatible notebooks
• Keeping a spare battery for travel or mobile work

Key specifications

• Voltage: 11.1 V
• Capacity: 57 Wh (4400 mAh)
• Cells: 6-cell lithium-ion
• Weight: 0.335 kg
• Replaces part number: 312-0822
• Manufacturer/brand: 2-Power (MPN: 2P-312-0822)

How to use

Power down the laptop and disconnect from mains before removing the existing battery. Follow the laptop manufacturer's instructions to release and remove the original pack, then insert the 2-Power replacement ensuring correct orientation and secure latching. After installation, connect the mains adapter and charge the battery fully before first use to calibrate the battery meter. Use the laptop's power-management settings to optimise run time and battery longevity.

Usage recommendations

Store the battery in a cool, dry place and avoid prolonged exposure to high temperatures. For best lifetime, avoid deep discharges and charge the battery regularly if the laptop is unused for extended periods. Use only compatible chargers and replace the battery if you notice swelling, excessive heat, or significant capacity loss.