I noticed right after I converted my phone to the Maxx that only the dual usb charger that came with the original phone would work, nothing else would charge it. So I ordered a couple more of those OEM chargers from Amazon and they didn't work. I did notice that these replacement chargers have a dark grey panels on the top and bottom instead of light grey. I tried ordering another pair of chargers looking specifically for the light very panels and the ebay seller sent ones with the dark panels. Of course they didn't charge the Maxx (but my wife has four backup chargers now). I finally decided to look at the model numbers and can't believe that they are different between the light and dark Grey versions. It's annoying that the specs are showing the same numbers but both don't work. Converted my RAZR to the Maxx. My phone is actually useful now.