Seamoth Solar Charger
The Seamoth Solar Charging Module is an in-development Upgrade Module that enables the player to recharge their Seamoth's battery while in the sun[1].
Currently, applying the Seamoth Solar Charging Module to a Seamoth gives it unlimited Energy during the day and the night. This is expected to change in the future.
Recipe
Speculation
It is to be assumed that the efficiency of this Upgrade Module will decrease the further the Seamoth is away from the water surface, similar to the Solar Panel.