A spacesuit comprising: a battery configured to power a load, the battery comprising a plurality of battery cells (16A-D); characterized in that at least one of the battery cells is connected and at least one of the battery cells is disconnected; and further characterized by comprising a first switch (18, 30) configured to disconnect a particular one of the at least one connected battery cells; a second switch (18, 32) configured to connect a particular one of the at least one disconnected battery cells; and a controller (22, 22') that is configured to monitor for a diminished current or voltage condition in the plurality of battery cells (16A-D), and to control the first and second switches based on a detected diminished current or voltage condition in the particular connected battery cell: wherein the battery circuit comprises a plurality of switches (30A-D, 18A-D, 32A-D), including the first and second switches (18, 30, 32), each associated with a respective battery cell (16A-D), and wherein the controller is configured to control the plurality of switches to maintain a predefined quantity of the battery cells (16A-D) in connection with each other, and wherein the detected condition in the particular connected battery cell (16A-D) comprises an output of the particular connected battery cell being below a predefined threshold; and wherein the at least one connected battery cell (16A-D) and the at least one disconnected battery cell are part of a plurality of battery cells, each of which has an associated switch that controls whether the battery cell (16A-D) is connected in parallel to a load and other ones of the battery cells (16A-D) via a shared input node and a shared output node, or is disconnected from the load and the other battery cells, each switch being connected in series between its associated battery cell and either the shared input node or the shared output node; and wherein the first switch is the associated switch for the particular connected battery cell, and the second switch is the associated switch for the particular disconnected battery cell; wherein for each battery cell the associated switch is the only switch that is situated between either of the shared input node and input of the battery cell or the shared output node and output of the battery cell. a battery configured to power a load, the battery comprising a plurality of battery cells (16A-D); characterized in that at least one of the battery cells is connected and at least one of the battery cells is disconnected; and further characterized by comprising a first switch (18, 30) configured to disconnect a particular one of the at least one connected battery cells; a second switch (18, 32) configured to connect a particular one of the at least one disconnected battery cells; and a controller (22, 22') that is configured to monitor for a diminished current or voltage condition in the plurality of battery cells (16A-D), and to control the first and second switches based on a detected diminished current or voltage condition in the particular connected battery cell: wherein the battery circuit comprises a plurality of switches (30A-D, 18A-D, 32A-D), including the first and second switches (18, 30, 32), each associated with a respective battery cell (16A-D), and wherein the controller is configured to control the plurality of switches to maintain a predefined quantity of the battery cells (16A-D) in connection with each other, and wherein the detected condition in the particular connected battery cell (16A-D) comprises an output of the particular connected battery cell being below a predefined threshold; and wherein the at least one connected battery cell (16A-D) and the at least one disconnected battery cell are part of a plurality of battery cells, each of which has an associated switch that controls whether the battery cell (16A-D) is connected in parallel to a load and other ones of the battery cells (16A-D) via a shared input node and a shared output node, or is disconnected from the load and the other battery cells, each switch being connected in series between its associated battery cell and either the shared input node or the shared output node; and wherein the first switch is the associated switch for the particular connected battery cell, and the second switch is the associated switch for the particular disconnected battery cell; wherein for each battery cell the associated switch is the only switch that is situated between either of the shared input node and input of the battery cell or the shared output node and output of the battery cell.