hello everyone i'm working on power bank project, i have to change the power inductor the one the old circuit in 3.3μH/15A and i found it to be so expensive know the battery 3.7V-4.7V and 3500mAh, 10A continues 8 in in parallel so (28000mA and 80A continues i'm right ?).
the max output will be limited to 3A DC,
so that mean the max current in the whole circuit will be 3A i'm right ? so i can pick up inductor with max amp 3A or 5A ??

 

You need to show your circuit/schematic. None of your numbers are making sense.

 

The rating of the inductor has nothing to do with the rating of the battery.
Post the circuit diagram.

 

here is the schematic o hope i don't confuse you.

 

You'll have to point out where in that circuit you are referencing.

 

On pin 33 there's power inductor L1 value is 4.7uH in BOM it's 4.7uH/15A