Ok cool. Thanks for the swift reply!

have I messed up!? I installed new battery but didn’t keep it charging on green for 2 hours!!! I took it off charge as soon as it went green and used it. Battery read full on the screen and in system report. I have used the computer and battery was running normally then suddenly jumped from around 85% to 5% and low battery warning showed. Should I just be following the instructions and hope for the best?