From left to right, the 1.5-volt battery source (either AAA, AA, C or D), a voltmeter and motor array. The setup allows two motors to be active at all times, ...

AG13 and A76 are the same type of battery as an LR44, alkaline to be specific. These batteries use zinc oxide and manganese dioxide to generate the necessary 1.5 volts at a steady drip feed.

The Chevy Volt was GM's plug-in hybrid car. In late 2018, GM confirmed it was moving away from hybrids to focus on all-electric future.