Sunvalleytek via Amazon offers the RAVPower USB 3.0 Dual Port 40-watt Car Charger for $10.99. Coupon code "AK888999" drops it to $7.49. Plus, Prime members bag free shipping. That's $1 under our mention from three weeks ago and the lowest price we could find by $7. It has Quick Charge 3.0 for faster charging. Deal ends February 28.