noun
layered dry cell; stacked dry battery
Technical term for a battery constructed by stacking multiple dry cells in series to achieve higher voltage.
積層乾電池は、9V電池などに使われている。
Layered dry cells are used in 9V batteries and the like.
乾電池 is a general dry cell battery, while 積層乾電池 specifically refers to a stacked construction of multiple cells.
Compound of 積層 (stacked layers) and 乾電池 (dry cell battery).