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.
If I discharge completely, I want you to...
...إذا فرغتُ كلّياً، أريدُكِ أن
Sobald ich komplett entladen bin,
möchte ich, dass du ...
Cuando acabe de descargarme...
Cuando acabe de descargarme...
Quand je serai déchargé…
Se mi dovessi scaricare completamente, 
vorrei che tu...
Se eu me descarregar 
totalmente, quero que você...