Draguen wroteHey, stay away from fake ones.
I once bought a supercharger for my mate 8 from Aliexpress (5 to10 dollarish), the charging rate was indeed superfast but everytime i touched my phone i would get slightly electrocuted.
after 6 month the battery started to "inflate" to the point where my screen poped out followed closely by the battery charging capacity skydiving to 30 minutes of usage.
since my GF had the same phone bought on the same day and the fact that to this day her battery is running OK, i know what to blame.
Hello how did you know it wasnt genuine. I bought one from ali for 15usd. Reviews are mixed not sure, waiting for it to come to compare it to relatives.