You can fix this, not too safe but I use it all the time and works.
You need your phone to be rooted of course,
If you are on TouchWiz ROM, install Nadia kernel (found in original android development section) or AGNi kernel If on aosp
Then download trickster mod for kernel options, go to charging control and enable "ignore unstable power detection" and apply .
This way you should charge at fastest possible.
And yes there is 4.4.2 official ..
if you don't want to root or do any of my things, you need to get better cable/charging place, etc.
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