You can't buy those. You'll probably need to take it out of another lighter.

fuse # 26 / 20 amp / cigar lighter , diagnostics

Lighter than day darker than night is an idiom that is usually used to describe the moon.

An Iceberg

Made of water but ice is lighter than water. Nine tenths of an iceberg is below the surface and so it is unseen.

Lighter elements tend to have neutrons equal to protonms or only a slight excess. Heavier elements have an excess of neutrons over protons