Wholesale Micro USB Cell Phone Car Charger Charges smart cell/mobile phones, MP3 players and Bluetooth headsets from many manufacturers. This corded 12V car charger has an industry standard micro USB connector and a 4 ft cable, so you are not buying an item that only works with one manufacturer's cell phone. Hard to find at retail for less than $10 or even $15. You can sell easily for $2 to $3 and help out your customers who need one in a pinch.