If you click on calibrate, who asked for cord AC in which I did. You press F2, then doesn't have battery checked by there who says also required calibration. Then turned off, turns back on and press the ESC key. A battery has checked with hp support assistant who said battery was in need of calibration. A connected for about 6 hours then put on the market. Salvation is my laptop for 1 1/2 years old and just bought a new battery. Pavilion g6-2304au: calibration of the battery
