On a drizzley morning, Miss Monochrome wakes up in her four and a half tatami-mat sized apartment. When she tries to change her battery, a leak in her roof causes her battery box to explode. What should appear from the smoke of the explosion but a good-looking guy in the form of a battery! Miss Monochrome and Battery-kun are shocked by this destined encounter. Thus begins their days of friendship.
I'm a battery.
أنا بطّارية
Ich bin eine Batterie.
Las baterías estamos 
destinadas a descargarnos.
Las baterías estamos 
destinadas a descargarnos.
Je suis une pile…
C’est mon destin de finir ainsi.
Io sono una pila.
Sou uma pilha.