I bought a battery for my dell vostro 15-3568 is it original or duplicate 

Hi Admin

I bought a dell battery for my laptop Dell Vostro 15-3568.  My questions is whether my battery is original or duplicate and how can I check this online or tell me the status.

Its part code  is  KR-M5Y1K-74760-9CS-E1UT-A00   Made in china AND  assembled in brazil

Please help me and they give me this with 1 year warranty and they telling that its original.So please check and reply.