It works to recharge the phone battery and its basic. Gets the job done. I was surprised that the charger lasted only 1 charge cycle even though it claims 10,000 mA.
The product has definitely enough capacity, but I’m not sure if im doing something wrong. It takes extremely long to charge my phone or my bluetooth speaker - like around 7 hours. But in general it's a good powerbank, would just have liked to know about the time it takes to charge before my purchase. (I mean I probably could have informed myself but it’s not obviously disclosed on the website.)