Bmw Motorrad Dual Usb Charger . Charges via a USB port to the balance lead on the battery. Find your personal favourite with our BMW Motorrad bike overview. Blue Light 4.8A Dual USB Motorcycle Charger For Hella DIN ... (Sarah Hardy) I find that this product is much faster, only slight drawback is. Charge the smartphone and the digital camera during the motorcycle trip - with the dual USB charger no problem. On paper that's hand because with these kinds of devices it's not Hook up two devices including one larger mobile device and the PNY Dual USB Car Charger does what it says on the tin. I find that this product is much faster, only slight drawback is. On paper that's hand because with these kinds of devices it's not Hook up two devices including one larger mobile device and the PNY Dual USB Car Charger does what it says on the tin. Motorcycle dual usb charger adapter for bmw f800 f650 f700 ... ...