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.
What a fantastic electrical 
current. I feel all better.
يا له من تيّار كهربائي رائع، أشعرُ بتحسُّن
Welch fantastischer Strom.
Mir geht's schon viel besser.
Qué buena corriente.
Qué corriente tan agradable.
Quelle magnifique intensité…
Che meravigliosa energia.
Mi sento molto meglio.
Que corrente elétrica fantástica.
 Eu me sinto bem melhor.