Lantern battery

Lantern batteries comprise multiple cells inside a housing.

The most common variant in the US is the 6-volt square-base battery with spring terminals.

[2] They are also used in the construction industry for powering flashing lights at roadworks.

[3] More common in Europe and Russia, this is a smaller, flat-pack battery mostly used in flashlights.

Since it is 12-volt, this type can be used to power car accessories outside of an automobile, using extra wiring or an adapter.