Electrical:
Probably you can use a voltage divider with 2 or 3 resistors to divide the voltages from the battery and then use them to achieve your desired output voltages. Keep in mind the values of resistors will be responsible for the amperes flowing through.
That is complete and utter nonsense and it scares me that someone writing that lists "http://www.basicsofelectricalengineering.com/" as his website.