If the electrical sacks become excessively charged, RAICHU plants its tail in the ground and discharges. Scorched patches of ground will be found near this POKéMON's nest.
Sapphire:
This POKéMON exudes a weak electrical charge from all over its body that makes it take on a slight glow in darkness. RAICHU searches for electricity by planting its tail in the ground.
Fire Red:
Its electric charges can reach even 100,000 volts. Careless contact can cause even an Indian elephant to faint.
Leaf Green:
Its long tail serves as a ground to protect itself from its own high-voltage power.