MITSU Battery for Acer Aspire 4551 4741 5741 4400 mAh 10.8–11.1 V

MITSU Battery for Acer Aspire 4551 4741 5741 is a replacement laptop battery with a rated capacity of 4400 mAh (48 Wh) and a nominal voltage range of 10.8–11.1 V. It is designed to restore or extend the runtime of compatible Acer Aspire notebooks and provide a mobile power source for everyday tasks, travel, or work away from a power outlet. The battery follows the physical form factor and connector compatibility required by the listed Acer models to ensure straightforward installation.

Advantages

The battery offers a compact, factory-replacement form factor that matches the original battery size and connector arrangement, enabling direct installation without modifications. With 4400 mAh capacity and a 10.8–11.1 V nominal voltage, it provides predictable run times for web browsing, office applications and light multimedia use. It is intended to bring a depleted or worn original battery back to functional condition, allowing continued use of the laptop without immediate dependence on mains power.

Suitable for

• Replacing a worn or failing battery in Acer Aspire 4551, 4741 and 5741 notebooks
• Extending portable runtime for office work, web browsing and email
• Providing spare power for travel or temporary mobile use
• Restoring battery performance when original cells show significantly reduced capacity

When it may not be suitable

This battery is compatible specifically with the listed Acer Aspire models and their matching battery bay and connector; it may not fit other laptop families or newer Acer models with different battery designs. It is not intended to increase performance beyond original manufacturer specifications, and devices requiring higher capacity or different voltage ranges are not appropriate for this unit.

Key specifications

• Capacity: 4400 mAh (48 Wh)
• Nominal voltage: 10.8–11.1 V
• Compatibility: Acer Aspire models 4551, 4741, 5741 (physical/connector match required)
• Type: Rechargeable lithium-ion pack (factory-replacement form factor)

How to use

Power down the laptop and disconnect any external power source before replacing the battery. Remove the existing battery following the notebook manufacturer’s instructions, insert the MITSU replacement into the battery bay until it locks in place, and reconnect mains power to charge the battery fully before the first use. Use the operating system battery indicators to monitor charge level and follow standard charging cycles to maintain battery condition.

What to consider before purchase

• Verify physical compatibility with your laptop battery bay and connector layout for Acer Aspire 4551, 4741 or 5741 models
• Confirm that 10.8–11.1 V and 4400 mAh suit your runtime expectations and device requirements
• Ensure you have the correct laptop model and that the original battery form factor matches the replacement

Usage recommendations

For best results, fully charge the battery before initial use, avoid deep discharges when possible, store the battery partially charged if unused for extended periods, and operate within the laptop manufacturer’s recommended temperature range to maximize service life.