I thought of an idea recently, and I wanted to know if electrical engineers agreed with my theory.
I have a smartphone.
Recently I bought a power bank because I found my phone's battery not holding up long enough.
Now here is what I thought about while charging my power bank and my phone.
If both batteries (of my phone and powerbank) could in theory fill up 1 mAh/minute and both my phone and and the power bank are connected to the outlet, and are actively charging, I'm basically charging the two batteries at an effective 2 mAh/minute.
If both my phone and my battery pack could hold 1000 mAh, I could charge both half way to 500 mAh and still have an effective 1000 mAh at half the time it would take me to charge the phone alone.
So if I bought three banks then together with my phone I could get the same effective 1000 mAh in just a quarter of the time!
So if this works in theory: Why not divide the phone's battery into hundreds of separate banks to get hundreds of times the times the charge rate? What prevents this in practice?