Hmm, I measured it once (temp increase over time, computed back into watts, compared to a watt meter on the induction cooker), and I found that of the 3,5kW I p

Hmm, I measured it once (temp increase over time, computed back into watts, compared to a watt meter on the induction cooker), and I found that of the 3,5kW I put in, 80% actually convert to temperature increase in the water. That is not too bad, is it? Are electric kettles more efficient?