the battery showed in the first three days false charge states - was charged and showed 5-10% charge on. after three full charge he now works top and has 6.5 to 7 hours of battery life. fits perfectly in a Acer Aspire 5742G, but is thicker than the original battery. laptop is thus somewhat behind high, which increases the functionality zumindest- -for me. the battery is good rubber studs, which the slip on smooth surfaces prevent. he is even after hours in that does not heat. The price is great for the power !!!