Voltage and current difference between Series and parallel of two or more batteries?

Question

Accepted Answer

In series, voltage adds up while current remains the same. In parallel, voltage remains the same while current adds up.

In series, batteries are connected end-to-end, positive to negative. In parallel, batteries are connected positive to positive and negative to negative.
Series connection increases voltage but does not increase current. Parallel connection increases current but does not increase voltage.
Series connection is used to increase voltage for high-power applications like electric vehicles. Parallel connection is used to increase current for high-current applications like power tools.
In a series connection of two 12V batteries, the total voltage would be 24V. In a parallel connection of two 12V batteries, the total voltage would remain 12V but the current capacity would double.

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