Power Bright Technologies Energizer Power Inverters range from 120 to 4000 watts. They can run and recharge numerous devices and appliances including cell phones, MP3 players, tablets, laptops, power tools and so much more. The 120 and 180 watt models come "cup sized" so it can fit in a cup holder. Each Cup Inverter has four USB Ports with a shared 2.1A capacity to facilitate charging up to four devices at once. The 500 to 4000 watt inverters have an overload indicator that automatically shuts down the device when the draw of the appliance exceeds the maximum watts of the unit, making them very safe to operate.
