Two college students convert a Prius hybrid into a plug-in hybrid. Some details are given regarding the electrical configuration of the additional battery pack; and some details are given on an added circuit board that uses the vehicle's diagnostic port. The added circuit tells the added battery when to charge the original battery. This added circuit will also "spoof the car into thinking [ the original battery has] more energy" than it does according to one of the students. The students claims they increased the distance the vehicles can drive on batteries alone from approximately 2 miles to about 20 miles.
The video ends with a challenge to automotive companies.
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