As one of its daily deals, Yugster offers the reVOLT Wall / Car Charger / Adapter with Built-In Battery for $14.97. Coupon Code "FreeYugBuck" cuts it to $13.97. With $5 for shipping, that's $36 off list and the lowest total price we could find. It features an integrated wall plug, USB to adapter connector, 30-pin Apple adapter, miniUSB adapter, microUSB adapter, and built-in 780mAh battery. Deal ends January 26 at 6 am ET.