The battery is converting some of its stored chemical potential energy into electric energy and giving that energy steadily to the current flowing through it.
(The battery; is converting; some of its stored chemical potential energy; into electric energy) (The battery; giving steadily; to the current) (the current; flowing; through it)
The battery The battery the current
is converting giving steadily flowing
some of its stored chemical potential energy into electric energy
to the current
through it