An electrical circuit, comprising: a) a sensing circuit electrically connectable to an electrochemical cell capable of generating an electrical current and a discharge voltage to thereby power an electrical load, wherein the sensing circuit is configured to measure the discharge voltage generated by the electrochemical cell; characterized in that the electrical circuit further comprises: b) a first resistor (R 1), a second resistor (R 2), and a third resistor (R 3), wherein the first and second resistors (R 1, R 2) are electrically connected in series and in opposition to each other at a node to thereby form a resistor divider electrically connected to the sensing circuit, and wherein a ratio of the first and second resistors (R 1, R 2) determines a first threshold voltage, and wherein the third resistor (R 3) is electrically connected in parallel to the second resistor (R 2) to thereby provide a second threshold voltage at the node that is greater than the first threshold voltage; and c) a first electrical switch and a second electrical switch, both switches (32, 34) being electrically connected to the sensing circuit, d) wherein, when the sensing circuit determines that the discharge voltage generated by the electrochemical cell is the same as, or greater than, the first threshold voltage, the sensing circuit closes the first switch and opens the second switch so that the electrochemical cell is electrically connected through the resistor divider comprising the first and second resistors (32, 34), the sensing circuit and the closed first switch to the electrical load, and e) wherein, when the sensing circuit determines that the discharge voltage generated by the electrochemical cell is less than the first threshold voltage, the sensing circuit opens the first switch to disconnect the electrochemical cell from the electrical load and closes the second switch to electrically connect the electrochemical cell to the third resistor (R 3) electrically connected in parallel to the second resistor (R 2) of the resistor divider, and f) wherein, when the discharge voltage of the electrochemical cell increases to the same as or greater than the second threshold voltage, the sensing circuit opens the second switch and closes the first switch so that the electrochemical cell is electrically reconnected through the resistor divider, the sensing circuit and the closed first switch to the electrical load. a) a sensing circuit electrically connectable to an electrochemical cell capable of generating an electrical current and a discharge voltage to thereby power an electrical load, wherein the sensing circuit is configured to measure the discharge voltage generated by the electrochemical cell; b) a first resistor (R 1), a second resistor (R 2), and a third resistor (R 3), wherein the first and second resistors (R 1, R 2) are electrically connected in series and in opposition to each other at a node to thereby form a resistor divider electrically connected to the sensing circuit, and wherein a ratio of the first and second resistors (R 1, R 2) determines a first threshold voltage, and wherein the third resistor (R 3) is electrically connected in parallel to the second resistor (R 2) to thereby provide a second threshold voltage at the node that is greater than the first threshold voltage; and c) a first electrical switch and a second electrical switch, both switches (32, 34) being electrically connected to the sensing circuit, d) wherein, when the sensing circuit determines that the discharge voltage generated by the electrochemical cell is the same as, or greater than, the first threshold voltage, the sensing circuit closes the first switch and opens the second switch so that the electrochemical cell is electrically connected through the resistor divider comprising the first and second resistors (32, 34), the sensing circuit and the closed first switch to the electrical load, and e) wherein, when the sensing circuit determines that the discharge voltage generated by the electrochemical cell is less than the first threshold voltage, the sensing circuit opens the first switch to disconnect the electrochemical cell from the electrical load and closes the second switch to electrically connect the electrochemical cell to the third resistor (R 3) electrically connected in parallel to the second resistor (R 2) of the resistor divider, and f) wherein, when the discharge voltage of the electrochemical cell increases to the same as or greater than the second threshold voltage, the sensing circuit opens the second switch and closes the first switch so that the electrochemical cell is electrically reconnected through the resistor divider, the sensing circuit and the closed first switch to the electrical load.