Patent ID: 7498770

Claim:
A load controlled battery charging device structured to operate without a transformer and to apply a direct current charge to a rechargeable storage battery, said device comprising: an electrical charging circuit comprising a single path series configuration and having an input connection to an alternating current household power supply, wherein the rechargeable storage battery has an output voltage which is less than a peak voltage of the alternating current household power supply, and the peak voltage of the alternating current household power supply is less than 240 volts, a single diode interconnected in series to the alternating current household power supply, said single diode structured to convert the alternating current household power supply to a direct current charging supply, a variable capacity load bank interconnected in series to the alternating current household power supply and said single diode, said variable capacity load bank comprising a plurality of load elements structured and interconnected to one another in a parallel configuration such that a charging current applied to the rechargeable storage battery is controlled by an additive current required for each of said plurality of said load elements interconnected in said parallel configuration, and a charging current output connection interconnected in series to the alternating household current supply, said single diode, and said variable capacity load bank, said charging current output connection structured to interconnect the rechargeable storage battery into said single path series configuration of said electrical charging circuit and to apply said charging current thereto.