Review on Portable battery Romoss Sense 8P , 30000 mAh, white by Andrey Kunev ᠌

Tried to turn it on, nothing. Started to charge, shows a charge of 78%. I'm trying to charge the phone, the power bank does not turn on, again. I put it on charge again, the charge percentage is unexpectedly 0%. In general, I will try to charge the power bank up to 100%. And again I'll try to charge the phone, if the power bank turns on, of course.