The car charger for me is all that is worth it. The wall unit seemed to get hot and I could not keep my Kindle Fire HD 8.9 off. I would turn it off, only to have it randomly turn back on. I think it did charge a little faster then my other wall plug, but it made me nervous with how hot it would get, where you could actually smell that almost overheating smell to it. The car charger though, definitely worth it. The price makes it no big deal about the wall unit, which honestly I didn't care about so much as the car one.
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