Samsung Galaxy S4 — Galaxy S4 - charging problem.. On/off/on/off ..

Hi,

For the last month or so I have noticed my phone is using a loit of power and will not charge like before.

I have taken off many apps and there are mainly nbow Google or Samsung apps which I don't use anway.. none !

I have the original wall charger 2.0 and I have tried many cables I have..

Most are on/off/on/off up to 15% and no matter how much I move them in the port get the same result and can't get any higher.

I bought a new batytery after changing the port mobo. So, new battery and new port.

I have found one small length cable and it seems to be better, but still every now and then on/off/on/off..

I have Ampere and it shows charge at 300 but sometiems on another charger I will get 350 but that is it.

The use age was -450 but O took out the extra card and deleted a few apps.

I wiped the cache in the O/S then rebooted.

I have 5.01.

Do my figures seem okay?

Is there an app that will show what is wrong?

Thanks

oz