What effect does connecting cells in series aiding have on current and voltage?

-- A stack of several cells connected in series presents several times the voltage

of a single cell.

-- The current depends on the 'load' connected between the battery's terminals.

But since the current through any load is directly proportional to the voltage across

it, several cells in series ... with their increased voltage ... will produce several times

as much current as the same load would draw from a single cell.