Electric transportation means, associated method and associated accumulator

The invention relates to an electric transportation means (10), in particular an electric vehicle (10), comprising: an accumulator unit (22) comprising a first connection (44) and comprising a second connection (24) wherein between the first connection (44) and the second connection (24) a first voltage (56) of at least 200 Volt is applied when the accumulator unit (22) is fully charged, and comprising a third connection (42), wherein a second voltage (57) is tapped on the third connection (42), said voltage being less than 20 % or less than 10 % or less than 5 % of the first voltage (56), and an on-board power supply (26) that is connected to the third connection (42) and that can be connected via a first switch unit (34, 334) of the transportation means (10).