Replacement Battery not charging but charging logo is on

Hello guys,great site many useful tips and guides.

Really need your help.

I destroyed my last battery so bought a brand new one.

I installed it just like the sites guide and i was glad to see my device on and with 50% battery.so i guessed everything went great!then tried to charge the phone but i saw that it wouldnt charge despite the charging logo and the sound notification when i plugged it!any ideas?now my battery is 20% and will die in a few hours and wont be able to turn on the phone so any help might be vital!

thanks in advance guys!