Does anyone else have trouble charging this phone on other chargers? topic

So the battery life has been great, and I haven't had to use any other charger other than the OEM for a while. The other day I was out with friends and I took out my car charger (2A) that I hadn't needed since I got the flex because I just don't have to charge my phone like how I used to with my note 2. So anyways, I took it out because I knew I wouldn't be back home for a while and I would have to charge my phone outside the house for the first time ever.

I connected the charger and I got a "slow charge" message on the top, like if I had connected it to a usb port.. ok?....this charger has charged many devices so I know it works. It has even charged tablets, so I thought it was strange. No problem though right? I'll just charge it for a bit at my friends house and just watch my usage throughout the night. As soon as I connected it to my friends OEM samsung 2A Note 2 charger I thought everything was fine until I checked it again about 45 minutes later when we were about to leave. It had charged maybe 1% in those 45 minutes!

So the night passed and I was ok but ever since then it has got me thinking. I have connected several other chargers and they all act the same, the phone charges at maybe 500mAh, not even that sometimes, but with the OEM charger it works like normal.

Anyone else experiencing this problem?