Walmart offers the Energizer 12-volt 500-watt Power Inverter
, model no. EN500, for $31.59
. Choose in-store pickup
to avoid the $4.97 shipping fee. (Home Depot
has it for the same with free in-store pickup; Amazon
charges the same with free shipping for Prime members.) That's tied with our mention from last week and the lowest price we could find now by $3. It features 1,000-watt peak power, two AC outlets, two USB charging ports, cigarette lighter adapter, and battery-clip cables.