An electrical control system for a vehicle having an electrical load defining a load draw, the control system comprising: a plurality of electrical storage elements electrically coupled to each other in parallel, each of the plurality of electrical storage elements defining a total storage capacity and having a state of charge cooperatively defining a total stored charge and adapted to be in electrical communication with the load and a power source (40, 90) comprising an alternator for converting mechanical energy and defining a power capacity and having an electrical power output; a plurality of switch devices (105a, 105b, 105c) electrically coupled to the plurality of electrical storage elements such that each switch device (105a, 105b, 105c) of the plurality of switch devices (105a, 105b, 105c) is associated with a corresponding electrical storage element and operable between a connected state and a disconnected state; and a controller in electrical communication with the plurality of switch devices (105a, 105b, 105c) to selectively vary each of the switch devices (105a, 105b, 105c) between the connected state and the disconnected state to: connect and disconnect one or more of the electrical storage elements relative to the load based on the total stored charges during a discharge phase, and connect and disconnect one or more of the electrical storage elements relative to the power source (40, 90) to regulate the electrical power output of the power source during a charge phase; characterized in that the controller is configured such that during the discharge phase said varying of each of the switch devices (105a, 105b, 105c) is based on whether any of said one or more of the electrical storage elements has reached or exceeded a predetermined discharge threshold, and wherein the controller is configured to provide adequate power to the load during the discharge phase by independently varying each of the switch devices such that one or more electrical storage elements are connected relative to the load, wherein the number of connected electrical storage elements is based on the total stored charge of each of the selectively connected electrical storage elements and the load draw, and wherein the controller is configured to disconnect during the discharge phase any of said connected electrical storage elements relative to the load which has reached or exceeded said predetermined threshold, and if possible, to connect at least one other electrical storage element relative to the load via the associated switch devices to provide adequate power to the load during the discharge phase. a plurality of electrical storage elements electrically coupled to each other in parallel, each of the plurality of electrical storage elements defining a total storage capacity and having a state of charge cooperatively defining a total stored charge and adapted to be in electrical communication with the load and a power source (40, 90) comprising an alternator for converting mechanical energy and defining a power capacity and having an electrical power output; a plurality of switch devices (105a, 105b, 105c) electrically coupled to the plurality of electrical storage elements such that each switch device (105a, 105b, 105c) of the plurality of switch devices (105a, 105b, 105c) is associated with a corresponding electrical storage element and operable between a connected state and a disconnected state; and a controller in electrical communication with the plurality of switch devices (105a, 105b, 105c) to selectively vary each of the switch devices (105a, 105b, 105c) between the connected state and the disconnected state to: connect and disconnect one or more of the electrical storage elements relative to the load based on the total stored charges during a discharge phase, and connect and disconnect one or more of the electrical storage elements relative to the power source (40, 90) to regulate the electrical power output of the power source during a charge phase; connect and disconnect one or more of the electrical storage elements relative to the load based on the total stored charges during a discharge phase, and connect and disconnect one or more of the electrical storage elements relative to the power source (40, 90) to regulate the electrical power output of the power source during a charge phase; characterized in that the controller is configured such that during the discharge phase said varying of each of the switch devices (105a, 105b, 105c) is based on whether any of said one or more of the electrical storage elements has reached or exceeded a predetermined discharge threshold, and wherein the controller is configured to provide adequate power to the load during the discharge phase by independently varying each of the switch devices such that one or more electrical storage elements are connected relative to the load, wherein the number of connected electrical storage elements is based on the total stored charge of each of the selectively connected electrical storage elements and the load draw, and wherein the controller is configured to disconnect during the discharge phase any of said connected electrical storage elements relative to the load which has reached or exceeded said predetermined threshold, and if possible, to connect at least one other electrical storage element relative to the load via the associated switch devices to provide adequate power to the load during the discharge phase.