(DE19648691-A1)      Conversion of the free enthalpy stored in hydrogen-containing materials (especially glucose and other chemical 2 H sources) together with atmospheric oxygen into the energy of an electrodynamic field is effected in a chemo-electrical converter (i.e. fuel cell) based on the reaction 2H + O H2O. The 2-stage reaction uses the free reaction enthalpy of both stages. The free reaction enthalpy of the first stage, yielding hydrogen peroxide and subsequently the actual acceptor O, is released by reaction of the O2 with hydrogen-containing compounds (preferably of halogens or pseudo-halogens) and transferred via the reaction product(s) to the reaction sequence for breaking the glucose into (4H + CO2) pairs. The reaction enthalpy of the second stage (based on H2O2) is used for the chemo-electrical reaction. The actual acceptor O is removed from the H2O2 (preferably via a carrier based on acids capable of peroxide bonding) and transferred to the positive electrode of the converter.    USE -   A switchable rechargeable battery molecule (SRBM) is provided, using reactions analogous with those (e.g. respiration) providing energy in living organisms. The system is especially for use (i) as a transportable source of electrical energy in technical microsystems or (ii) in macroscopic linked alternating current systems with variable frequency at high potential.    (EP867049-A2)      Conversion of the free enthalpy stored in hydrogen-containing materials (especially glucose and other chemical 2 H sources) together with atmospheric oxygen into the energy of an electrodynamic field is effected in a chemo-electrical converter (i.e. fuel cell) based on the reaction 2H + O H2O. The 2-stage reaction uses the free reaction enthalpy of both stages. The free reaction enthalpy of the first stage, yielding hydrogen peroxide and subsequently the actual acceptor O, is released by reaction of the O2 with hydrogen-containing compounds (preferably of halogens or pseudo-halogens) and transferred via the reaction product(s) to the reaction sequence for breaking the glucose into (4H + CO2) pairs. The reaction enthalpy of the second stage (based on H2O2) is used for the chemo-electrical reaction. The actual acceptor O is removed from the H2O2 (preferably via a carrier based on acids capable of peroxide bonding) and transferred to the positive electrode of the converter.    USE -   A switchable rechargeable battery molecule (SRBM) is provided, using reactions analogous with those (e.g. respiration) providing energy in living organisms. The system is especially for use (i) as a transportable source of electrical energy in technical microsystems or (ii) in macroscopic linked alternating current systems with variable frequency at high potential.