New laptop battery doesn't charge

[Paul_1000]

I just bought a new battery for my Toshiba P845-S4200 laptop, at first it was working. It says that it currently has 50% battery. But after a few minutes it suddenly blacked out. When I tried to open it again, it doesn't work anymore. It only works again when I plugged my charger. What I'm concern about is now it says 0% battery, plugged, charging. But the percentage doesn't increase at all. I' m not even sure if the laptop is defective or the battery.

 

[Lutfij]

After receiving your laptop battery, did you charge it fully before discharging it until your laptop shut off abruptly? You will need to perform this task a number of times in order to cycle the battery. Provided the battery was genuine and was purchased from a certified reseller.

On another note, try charging the battery while you're not using the laptop, i.e when it's shutdown. Surely the battery charging LED/indicator shows that it's charging the battery?