Acer BTP-ARJ1 / BTP-AQJ1 Battery – 11.1V

The ACER BTP-ARJ1 (also referenced as BTP-AQJ1) replacement laptop battery is engineered for Acer Aspire models such as the 3620 and 5540 series. With a voltage of 11.1V and a typical capacity of around 4400mAh (49Wh) based on OEM replacement listings, this 6-cell Li-ion battery offers reliable backup power and consistent performance. Built with premium battery cells and integrated smart protection circuitry for over-charge, over-discharge, temperature and short-circuit safeguards, it ensures safe, efficient, and long-lasting operation for your laptop.

• Delivers stable and dependable power for everyday computing.
• Built-in smart protection prevents overheating and overcharging.
• High-quality Li-ion cells ensure durability and safe performance.
• Straightforward fit for Acer Aspire 3620 / 5540 series easy installation.

Compatible Laptop Models

• Acer Aspire 3620 Series
• Acer Aspire 5540 Series
• Compatible Part Numbers: BTP-ARJ1, BTP-AQJ1