I thought I would mention with an electric tea kettle you still should boil your water then let it come down to desired temperature by checking with your thermometer. Reason being, when water boils, it chemically introduces oxygen. This is important because if you don't let your water boil the oxygen magic will not happen, hence, your tea will be flat. Additionally, it is equally important not to over boil your water - just a quick rolling boil, take it off the fire and let it come to the desired temperature naturally.
So, now my question - why would anyone invest all the money into a electric tea pot when, for ideal tea, you still have to bring your water to a rolling boil and let cool. I just use a Mauviel copper 1 qt. sauce pan with a built in spout, put it on the gas fire, boil and bring it down to temperature using my digital thermometer - no mess, spills and wicked easy and actually enjoyable. The whole process takes around five minutes. I guess electric kettles are predominately used for matter of convenience correct? However, I'm not sure that heating water to 180 degrees then immeditaly steeping produces the best tasting tea because what I mentioned above fails to happen.