When a Pokémon with this Ability is hit by a move, it becomes charged, boosting the power of the next Electric-type move it uses.
If hit by a multistrike move, each hit triggers the Ability, but the charges do not stack.
When this Ability is triggered, the message "Being hit by <move> charged <name> with power!" is displayed, even if it causes the Pokémon with Electromorphosis to faint. If the opposing move causes the Pokémon to faint, Electromorphosis displays the message before the Pokémon faints.
When Bellibolt takes damage from an attack, its body starts sparking and becomes charged with electricity, making its next Electric-type move more powerful.
This Ability's Japanese name comprises a pun: かえる kaeru can be taken as a verb, 変える (to change); or as a noun, 蛙 (frog). This may explain the fact that it is signature to the EleFrog Pokémon, Bellibolt. Its English name derives from a combination of electro- and metamorphosis.
In Showdown! The Paldea Elite Four, Jacq describes Electromorphosis as the way Bellibolt is able to generate and store electricity after its abs shake from an impact.