Consider replacing your battery - Windows 7 suggests on my laptop

Hello friends

I have a laptop which is around a year old, I use it daily and now its battery backup is not good but still its 1 hour + . But today I saw one thing strange. On battery meter at lower right corner it has a cross red sign and if I move mouse over it then it says Consider replacing your battery !

So it means my battery is gone bad now or its just windows seven is confused. I think 1 hour + backup even after so much use is ok.

Please guide if I can do something or I can simply ignore this warning of windows 7?

It simply means that your battery is gone bad, its now unable to give proper back.