As one of its daily deals, 1SaleADay offers the Cyberpower 160-watt Mobile Power Inverter, model no. CPS160SU, for $14.99 with free shipping. That's the lowest total price we could find by $9, although we saw it for $5 less via rebate in April. This device converts 12-volt DC automobile power to 120-volt AC home power. It features a USB port, surge protection, 2-in-1 auto/airline adapter, and automatic shut-off. Deal ends today.