Windows 7: my Laptop battery Acer Aspire One D250 won't charge to 100

Hello, I've only had the Acer Aspire One D250 laptop for less than a year, and the battery already started to fail. For some reason, it never charges up to 100% and after leaving it charging, the white light starts blinking
Akku Acer Aspire One D250,Adapter Acer Aspire One D250

What's the max charge it will hold? Also, what does this white blinking light mean exactly?

There could be a dead cell in it, or it could simply need to be calibrated... I think the process for recalibrating it goes like this;

Charge it as far as you can, then run it comletely out of juice, dont even let the thing go to sleep. just run it on high contrast no screen saver until the battery is completely dead, even when it shuts itself off, keep turning it back on until it simply wont let you. THen charge the battery to full when the computer is off and try turning it back on again. If this doesnt help recalibrate it, then the battery might be starting to go. Never seen anyone make a laptop battery last the way its supposed to. Also really depends on your habits, ie: if you leave it on power all the time, let it charge fully before use/unplugging it all the time and etc.