Acer AS09A31 / AS09A51 Laptop Battery

The ACER AS09A31 / AS09A51 replacement battery is designed to revive your older Acer notebooks such as the Aspire D525, D725, E525 and similar models. With a nominal 11.1V output and around 49Wh capacity, this Li-ion battery ensures reliable backup power and consistent performance for everyday use. Built with quality cells and smart safety features—including protection against overheating, overcharging, and short-circuit hazards—it delivers efficient, stable operation to extend your laptop’s battery life. ACER AS09A31 / AS09A51 49Wh Laptop Battery compatible with Acer Aspire D525 / D725 / E525 series. Delivers dependable 11.1 V power with built-in safety protections and extended battery life for your laptop.

• Stable power and reliable runtime for mobile usage.
• Smart protection built-in to guard against heat, overcharge, and electrical hazards.
• High-quality Li-ion cells for durability and consistent performance.
• Straightforward replacement fits easily without modification.

Compatible Laptop Models:

• Acer Aspire D525
• Acer Aspire D725
• Acer Aspire E525