Lenovo Y580 battery trouble

[shnnnh0]

I have a Lenovo Y580 laptop that is about 4 years old. I replaced the old battery that wouldn't hold a charge with one i purchased off of Ebay. The fist few days it worked great and now it is giving me trouble. It charges to 100% in about 2 minutes. It literally will say 1% and then it is suddenly at 100%. So of course if i unplug it it immediately dies. Any ideas if it is the battery or the charger or what my problem is?

 

[noriel]

It maybe the battery .. try to use diffrent charger if you can have one.. that way you can test if it is really the battery or the charger... But my best gues is, its the battery