Northern Tool offers the Powerhorse 1,600-watt Portable Inverter Generator for $479.99. Plus, coupon code "261282" bags a $25 Northern Tool gift card. With free shipping, that's $45 under our Cyber Monday mention and the best deal we've ever seen. (It's the lowest price we could find now by $25.) It features a low oil alert, 100% copper-wound heads, quiet 52dB noise level, and parallel cables. Deal ends February 24. Note: The Northern Tool gift card expires June 30.