Sunvalleytek via Amazon offers the RAVPower 24-watt 2-Port USB Car Charger with iSmart in Black for $5.99 $6.99. Coupon code "KINJA919" cuts the price to $4.99. Plus, Prime members qualify for free shipping. That's a buck under our September mention and the lowest price we could find by about $5. This thumb-sized charger features iSmart 2.0 smart charging technology, dual 2.4-amp USB ports, multiple built-in protection methods, and an aircraft-grade aluminum alloy body. Deal ends November 30.