Why do most electronics that run on two batteries require you to have them facing alternating directions?
In:
The batteries are wired in series. The positive terminal of one battery is wired to the negative terminal of next battery. If I connect two batteries in series I have doubled the voltage in the circuit while maintaining the same capacity rating (amp hours).
If the batteries were facing the same way, they would be parallel. The positive terminal of one battery would be wired to the positive terminal of the next battery, and the same for the negative terminals. If I connect two batteries in parallel I double the capacity (amp hours) but the voltage is unchanged.
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