many factors involved here
1. charger amperage
2. cable transfer amperage level
3. cable fast charging capability
4. phone charging capacity


like my mi3, max input is 2A, when i use my own fast charging cable with fat lines only can get around 1.8Amps. (my charger size is 5A)

1. if your phone detect is normal USB cable, then is 0.5A
2. if your phone max can charge at 1A, then if you use 2A charger and 2A cable, you will end up with 1A only.
3. fast charging is just a difference with the pinout where they shorted one of the data pin, your phone will detect this difference and allow more juice than 0.5A to flow in.
4. some of fast charging cable copper core is very thin, so can support around 1A only. good cables is thick on the core, with shorted pins to enable fast charging, and braided to prevent snapping when bent

This post has been edited by AllnGap: Dec 30 2015, 09:13 AM

this app is not accurate at all,
i've tested using multimeter to test powerbank transfer and so i can verify that this app is very inaccurate.

fast charging capability is actually shorting one of the data pin.
once this pin feature is activated, your phone will allow more than 0.5A to flow through.
If not your phone will limit charging at 0.5A

All microUSB devices use shorting method.

For apple cable is a small chip in its charging pin

If not mistaken

Apple charger has higher voltage around 5.3v

I tested with normal charger and apple charger on iPad conclusion is only apple charger capable of 2 amps.
Which i suspect was the difference in higher voltage

nope,

microUSB = shorting / resistor

apple is chip based thing on connector

http://i1363.photobucket.com/albums/r718/l...zps68cd16d7.png

This post has been edited by AllnGap: Dec 30 2015, 10:20 AM

different ler...

that is charging and no charging status.
apple damn cb, their cable got chip, their charger got quick charging (resistor you mention)

i tested before using those 2 using normal 5V adaptor, but couldnt get apple original charging amperage.

i suspect their charger is 5.3V, ours is only 5 or 5.1V

like this, apple original cable cant charge on normal USB. they use resistor pinout modification to identify whether charger is original or not.

the thing i'm saying is that apple charger with apple cable only achieve the highest amperage transfer.
i tried using oem cable with high amp 5V charger but still the charging amperage is not as high as original charger + cable combination

for iphone makes not much difference, but for ipad makes a lot of difference because ipad battery is about 10,000mAh.

it's not whether the thing is cheap or not, it's whether is real or original or not.

even xiaomi cable also got fake man.....so many fake things floating in the market now

when u use the original ipad charger and test with amp meter then you will see the difference.
i suspect ipad charger charges at 5.3V, slightly higher than normal

i give you a simple equation to get high output for charging.
from charger, cable and phone must be these type

[ charger output = 2A ] [ fast charging enabled cable @ 2A(thick copper core) ] [ phone capable of 2A charging ]

This post has been edited by AllnGap: Dec 30 2015, 11:33 AM