PB-Y3 Full Charge?

I purchased the PB-Y3 30,000 mAh power bank. It would not charge beyond red and I had a new one sent to me. Now I am charging my new one for the first time, as the instructions state. The light was green before charging. I’ve had it charging for several hours and it will not charge beyond green. The light should turn white once fully charged. I am not sure if it isn’t fully charged yet, or if it is not reaching full charge. Any help would be appreciated.