FIG. 32 illustrates technical solution for (simultaneous) power transmission to a load with N parts having: different number connected in parallel energy storing units 12 (which can be batteries and super-capacitors C); no less than one unidirectional conductive device (D1, D2, D3 . . . DN) connected in parallel with no less than one of energy storing units 12 or super-capacitors C of each of said parts N and installed against current of charging of said units 12 or super-capacitors C. FIG. 32 also illustrates power transmission to hybrid load (with units of batteries 12 and super-capacitors C) when switching device Sc are switched on. After charging: switching devices Sc are switched off and switching device So are switched on; N parts are connected in series. Unidirectional conductive devices (diodes) D1, D2, D3 . . . DN, which are installed against current of charging of said units 12 (FIG. 22) or super-capacitors C, permit fully discharging all energy storing units 12 and super-capacitors C. Production accuracies of energy storing units 12 and super capacitors C cannot affect a full discharge [“thanks” to the mentioned diodes (FIG. 31, FIG. 32, FIG. 26, FIG. 29 and FIG. 30)]. The time of discharging ΔTDIS can be changed by changing number of connected in parallel energy, storing units 12 and super-capacitors C (FIG. 31 and FIG. 32).