With the lid removed, we can now see a bit of the circuitry including:

USB port

LED light

a lone resistor

Separating the top cover from the bottom cover takes two steps:

There are two wires connecting the curly cord to the charger, so we need to cut these wires with the flush wire cutters to keep them neat and reusable.

Next we can see that there are two tabs keeping the red plastic cover connected to the black plastic cover. In order to separate these two we need to use two plastic opening tools in tandem with a little bit of force. As stated earlier, T-Mobile did not design these chargers to be easily repaired.