This is a brand new Acer AS10B41 battery. The superior South Korean cells inside the battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries.
This Acer AS10B41 battery is compatible with the Aspire 4820, 4820G, 4820T, 4820TG, 5820, 5820G, 5820T, 5820TG, 5820TZ, 5820TZG and Aspire 4745, 4745G, 4745Z 7745 laptop models.
We use the highest quality lithium-ion battery cells and components that charge faster and last longer than cheaper, lower quality batteries. Low quality batteries can wear out in as little as 6 months. Our batteries can last up to 5 years.
This Acer AS10B41 battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.