(WO9712415-A1)      A hybrid energy storage system comprises a sec. battery (12) selected from Pb-acid, Ni-Cd, Ni-metal hydride, Li ion or polymer and combinations for given a constant current of less than 1 A and an electrochemical capacitor (14) for giving intermittent bursts of current of more than 1 A. Output electronics (16) coupled to the devices condition the output and couple the system to a load (20).    Also claimed are: (i) a system as above for pulsed power communications in which the capacitor is planar and can provide current pulses of at least 5 A for at least 10 ms at a frequency of 10 Hz; and (ii) a system as above in which one capacitor electrode is a metal oxide, the other of metal oxide or conducting polymer and there is an electrolyte between the electrodes.    USE -   For portable electronic devices such as radios, CD players, cellular telephones and computers.    ADVANTAGE -   Sufficient voltage for high power pulses is obtd. while the system has a long usable life, is small and can be shaped as needed.    (EP858679-A1)      A hybrid energy storage system comprises a sec. battery (12) selected from Pb-acid, Ni-Cd, Ni-metal hydride, Li ion or polymer and combinations for given a constant current of less than 1 A and an electrochemical capacitor (14) for giving intermittent bursts of current of more than 1 A. Output electronics (16) coupled to the devices condition the output and couple the system to a load (20).    Also claimed are: (i) a system as above for pulsed power communications in which the capacitor is planar and can provide current pulses of at least 5 A for at least 10 ms at a frequency of 10 Hz; and (ii) a system as above in which one capacitor electrode is a metal oxide, the other of metal oxide or conducting polymer and there is an electrolyte between the electrodes.    USE -   For portable electronic devices such as radios, CD players, cellular telephones and computers.    ADVANTAGE -   Sufficient voltage for high power pulses is obtd. while the system has a long usable life, is small and can be shaped as needed.    (JP11512866-W)      A hybrid energy storage system comprises a sec. battery (12) selected from Pb-acid, Ni-Cd, Ni-metal hydride, Li ion or polymer and combinations for given a constant current of less than 1 A and an electrochemical capacitor (14) for giving intermittent bursts of current of more than 1 A. Output electronics (16) coupled to the devices condition the output and couple the system to a load (20).    Also claimed are: (i) a system as above for pulsed power communications in which the capacitor is planar and can provide current pulses of at least 5 A for at least 10 ms at a frequency of 10 Hz; and (ii) a system as above in which one capacitor electrode is a metal oxide, the other of metal oxide or conducting polymer and there is an electrolyte between the electrodes.    USE -   For portable electronic devices such as radios, CD players, cellular telephones and computers.    ADVANTAGE -   Sufficient voltage for high power pulses is obtd. while the system has a long usable life, is small and can be shaped as needed.