发明名称 |
ELECTRICITY OF ITS OWN STORAGE BATTERY IS USED IN ITS OWN MOTOR, OR USED AS ELECTRICITY IN A VARIETY OF APPLICATIONS, AND THEREBY ELECTRICAL CAPACITY OF STORAGE BATTERY IS INSUFFICIENT IMMEDIATELY, CHARGING IS REPEATED AUTOMATICALLY AT THIS INSUFFICIENT MOMENT IN TIME, THUS ENSURING CERTAIN AMOUNT OF ELECTRICAL CAPACITY IN STORAGE BATTERY AT ANY TIME |