Top positive review
Name you can trust on.
3 June 2019
Before first use I have charged it till all 4 led indicated turns stable, then started charging my one of 4000 mh cellphone in switch off position until full charge and then repeat the process with my iPhone 6s. Result is 2 fully charged cellphone and 2 stable led light in this power bank so roughly I can say this power bank is capable delivering around 14000 mh of power in one charge.
Note: before providing feedbacks please spare some time understanding how should you do the math.