Hello friends, Today iam going to review BILLION POWER BANK 15000.I have purchased this power bank for my sister and I have used it many times.This is a worst product I have seen among power banks.It takes long hours to make full charge even a 2500 mAh phone.The OUTPUT VOLTAGE is very less compared to other power banks.Whenever I charged my phone its started heating slowly.O have never experienced such heating issue while charging in my phone.and this power bank doesnot give outpu curret of 15000mAh only around 8000mAh is give as output current.It takes long hours to be fully charged and FREE ELECTRONIC DISCHARGE is faced in this power bank.That causes charge leakege without any use.I have used many other powerbanks and I never refer BILLION POWER BANK 15000 to anyone I always prefer Mi power bank because its more effecient and can be get at cheap rates in mi stores.
My rating on this BILLION POWER BANK is 1.5/5