- Fill your cup to the brim with this Quest kettle's 0.5 litre capacity - that's a whole lot of coffee to wake up in the mornings- With its 2 mugs you can brew up a cuppa for yourself and your partner- Use the dual voltage switch to choose a temperature between 110V to 240V and get a piping hot cuppa everytime- There won't be any wires hanging around or tea spills on your countertop, thanks to this cordless kettle's nice little spout