Where can I get an iPhone 5 charger that is reinforced?

I've already gone through 2 charger for my iPhone 5. They always break right near where they plug into my phone. For the second charger I placed a pen spring around this spot to keep it from bending and breaking but apparently it didn't work. Is there such a thing as a reinforced charger?

Step 1: http://lmgtfy.com/?q=Reinforced+iPhone+5+Cable
Step 2: Watch the video that pops up.

You can have a battery bank I guess