Grapple Voltage

The Grapple Voltage uses the Grapple Beam and gives Samus Aran the ability to either siphon or give energy to objects and creatures, like a Metroid (species). It only appears in Metroid Prime 3: Corruption. It is obtained after defeating Gandrayda. The Grapple Voltage is directly tied to Samus's PED Suit. If she siphons energy from something, she gains energy, though if she gives energy, she loses her energy. Note that giving up energy to another is a gameplay mechanic - Phazon enemies can be overloaded and explode, and during a certain part of the game, Samus is practically required to lose energy via this method. The Grapple Voltage can also be used to drain energy from the armour of Space Pirates which carry shields (and thus replenishing Samus's own energy) by first attaching the grapple to the Pirates shield as if to rip it off and then moving the control stick back to drain the Pirate's energy, almost like a Metroid. However, the Grapple will only continue to drain energy until the Space Pirate's armour falls off, reducing it to a Pirate Militia. Like most powerups in the game it has a hypermode counterpart called the Hyper Grapple. It is likely in Gandrayda's possesion due to her purple electrical attacks.