iPhone 7 changed dock and battery

Hi,

I had a verry weird problem with my phone,

Last months i was tired of that when my phone is drained it takes 5 min to boot up , when it started the phone the phone inmediatly restarts and keeps restarting when its 2 %.. also had problems with people that her me with a little echo, so i also changed the dock connector..

Now

I installed everything but my question is,

My battery is charging much slower as previous,

Also when i enter my lightning cable sometimes it does not regonize the cable. I tested it with different cables but its the same, when it happens that it does not regonize i have to restart or shut down the phone and just replug it in and then it works fine but still slower charging

Is this a battery problem or the Dock problem sice both parts are new i dont know what the problem is

Or did i accidently blow up an diode?