NiMH Laptop Battery for ACER Extensa 390 Series (also works with Acer 11J8639) Looking for reliable performance from your Acer 11J8639 Laptop? Our Acer 11J8639 battery will provide you the performance and dependability that you demand for your Laptop. With an efficient rating of 10.8V Volt and 3500 , you never have to worry about being too far from an ac outlet. Our line of Acer 11J8639 batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications. With an industry leading warranty and customer service, you can’t go wrong. ... More Info
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