Samsung chargers slow charging
Hello, I just got my Samsung ETA-U90EWE charger (US plug) from eBay and when I use it to charge my Note 2 it shows that it delivers 1698mAh of current into the phone. However, when I use the ETA-U90UWE (UK plug) that comes with the phone, it also displays the same input current, but with the UK one, it charges much faster. What is the problem?
Note: In both cases, I use the same USB cable which came with the phone and both charger delivers the same 2A current at 5V.