Using the Grapple Voltage to drain energy (indicated by a blue beam).
The Grapple Voltage is an upgrade for the Grapple Beam and provides Samus Aran the ability to either siphon energy from or channel energy to objects and creatures. This ability is similar to the energy-siphoning abilities of Metroids. It appears in Metroid Prime 3: Corruption and is obtained after defeating Gandrayda.
If Samus siphons energy from something, she gains health, and if she injects energy, she loses health. Injecting energy is a useful gameplay mechanic - Phazon enemies can be overloaded and explode, and later into the game, Samus is practically required to lose energy via this method. The Grapple Voltage can also be used to drain energy from certain enemies (like Shield Pirate Troopers or "Dragoon" Battle Drones), which can be grappled. In some cases, Samus needs to channel energy into special terminals to power down shields blocking doors.
Enemies are killed much faster if they are overloaded with energy than if all their energy is siphoned away - however, this is usually a very inefficient method in combat, as even the lowly "Dragoon" Battle Drone requires almost a full Energy Tank to kill.
Like several power-ups in Metroid Prime 3: Corruption, it has a Hypermode counterpart, which is called the Hyper Grapple.
Official data[]
On-screen tutorial[]
"The Grapple Voltage ability is used to give or take energy from certain objects.
Grapple the power coupling while locking on with 
and casting the Nunchuk forward.
While still attached, pull the Control Stick down 
to siphon energy from the coupling."'
Metroid Prime Trilogy manual[]
- Grapple Voltage
- "If you obtain the Grapple Voltage, after you shoot the Grapple Beam, you will be able to exchange energy with the target of the beam. After you shoot the beam, tilt the Control Stick up to send energy to the target, and tilt it down to absorb energy from the target."
Inventory data[]
Grapple Voltage
The Grapple Voltage ability allows you to give or take energy from certain objects.
Press and hold while targeting a Grapple Point 
to attach. While still attached, pull the Control Stick down to siphon energy and push the Control Stick up 
to send energy.
The Grapple Voltage ability is tied into your Suit's power. Draining energy from an object will replenish yours and sending energy into an object will drain energy from you.
Objects in the environment that shimmer can be given energy or have it taken away.
Metroid Prime 3: Corruption acquisition message[]
"Armorsuit upgrade acquired. Grapple Voltage online.
While attached to [Grapple Icon] use [Control Stick (Up)] to send energy along the grapple beam. Use [Control Stick (Down)] to drain energy.
Additional data downloaded to Inventory Screen."
Metroid Prime 3: Corruption Premiere Edition[]
- Grapple Voltage
- Location: Pirate Homeworld, Research Facility
- Room: Proving Grounds
- "The Grapple Voltage ability allows you to give or take energy from certain objects. Press and hold [Z] while targeting a Grapple Point to attach. While still attached, pull the control stick down [Control Stick (Down)] to siphon energy and push the control stick up [Control Stick (Up)] to send energy. The Grapple Voltage ability is tied into your suit's power. Draining energy from an object replenishes yours, and sending energy into an object drains energy from you.
TIP: Some switches in the game require power, and others need to be drained of power. The Grapple Voltage is ideal for these situations. You can also use the Grapple Voltage to drain energy from certain enemies, helping restore your health."
Trivia[]
- Purple-colored "Grapple Voltage Doors" are shown in the key of the map, but there are no such doors on the map or in the game.
- On Normal Mode, due to the differing rates of energy absorption/emission into Grapple Voltage Terminals - specifically, absorption is about twice as efficient - Samus can utilize Grapple Voltage Terminals to slowly but surely regain all her health by alternating charging and absorbing, as long as the Grapple Voltage Terminal is not completely drained or energized. This will not work on Veteran Mode or Hypermode, as on Veteran Mode, the rates are identical, and on Hypermode, the rate is actually higher (causing increased health loss if repeated).
- Samus later gains the ability to directly siphon energy from creatures and mechanisms in Metroid Dread, similarly to the Grapple Voltage. However, she has much less control over this ability and her Metroid DNA as a whole than she does over the Grapple Voltage.
Gallery[]
| Grapple systems |
|---|
| Grapple Point • Ship Grapple Point Grapple Beam • Grapple Swing • Grapple Lasso • Grapple Voltage • Hyper Grapple Ship Grapple Beam |