Battery 2-Power 11.1v 6 cell 57Wh Laptop Battery replaces 42T4728

The 2-Power 11.1v 6 cell 57Wh Laptop Battery replaces model 42T4728 and provides reliable power for compatible laptops. Built with high-grade lithium-ion/polymer cells from reputable manufacturers, this 6-cell battery delivers a nominal voltage of 11.1 V and a capacity of 57 Wh (5200 mAh), offering stable voltage and extended runtime. It is a direct replacement designed for easy installation and dependable performance while on the go.

Advantages

The battery uses quality cells from manufacturers such as Samsung and Panasonic to ensure consistent charging and discharge performance. Integrated protection circuitry monitors charging and discharging, helping to prevent short circuits and overheating. With a 6-cell design and 57 Wh capacity, it balances runtime and lightweight construction (0.312 kg) for portable use.

Suitable for

• Laptops compatible with the 42T4728 battery model
• Users needing a replace­ment battery for travel and mobile use
• Routine office work, web browsing and media playback

Key specifications

• Brand: 2-Power
• Model / Replaces: 42T4728
• MPN: 2P-42T4728
• Chemistry: Lithium-ion / polymer
• Voltage: 11.1 V (nominal)
• Capacity: 57 Wh / 5200 mAh
• Cell count: 6 cells
• Weight: 0.312 kg

How to use

Power the laptop off or put it into sleep mode, remove the old battery following the laptop manufacturer's instructions, and insert the 2-Power replacement battery until it clicks into place. Reconnect the AC adapter and charge the battery fully before first use. Verify proper seating and charge status via the laptop's battery indicator.

Usage recommendations

Charge the battery with the laptop’s original charger and avoid extreme temperatures. Store the battery at around 40–60% charge if not used for extended periods, and periodically cycle the battery by charging and discharging to maintain health.