My Note 5 isn't charging fast with portable charger, why?

[AC Question]

my note 5 isnt charging fast with portable charger?

my portable charger is 50000 mAh when i try to charge my note 5 it keeps saying cable charging but it doesn't charge fast. any way to fix it? my portable charger is suppose to fast fast and its brand new.

 

[B. Diddy]

Re: my note 5 isnt charging fast with portable charger?

Welcome to Android Central! What's the maximum amperage for the charger?