ACER Aspire F5-573G shuts down randomly !!

I have recieved a replacement of my laptop and the problem with this new laptop is that it shuts down randomly and also i have tried to calibrate the battery but still the issue persists . sometimes even the battery indicator gets stuck at 99 % and remains there for some time and then it starts to drop down to somewhere near 45% and the laptop shuts down with no warning and i cannot turn it ON again untill i insert a pin and reset the battery through the hole provided at the back.

Then also when i click the power button to power on the laptop makes a click sound and shuts down like 3-4 times and then boots up properly.

this only happens on battery power not on AC.

is my battery a issue ?? i rember this issue started off after i updated my bios to 1.27 .

help please !!

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dougc

Reading more & more 'hinky' F5-573G configurations . . . . glad I did give up on finding a unit that worked properly.

As mentioned in my thread, I had fd. some mention of some small Batt' enhancement coding within the EC ... your platform configuration may not have apppreciated that !