Heavy Ball
A Poké Ball for catching very heavy Pokémon.
-20 if used on a Pokémon weighing 220.2 lbs. (99.9 kg) or less, ±0 if used on a Pokémon weighing 220.5 lbs. (100.0 kg) – 440.7 lbs. (199.9 kg), +20 if used on a Pokémon weighing 440.9 lbs. (200.0 kg) – 661.2 lbs. (299.9 kg), +30 if used on a Pokémon weighing 661.4 lbs. (300.0 kg) or more
Used by a trainer in battle : Attempts to catch a wild Pokémon. If used in a trainer battle, nothing happens and the ball is lost. If the wild Pokémon weighs: * 409.6 kg (903.0 lb) or more, its catch rate is 40 more than normal. * 307.2 kg (677.3 lb) or more, its catch rate is 30 more than normal. * 204.8 kg (451.5 lb) or more, its catch rate is 20 more than normal. * less than 204.8 kg (451.5 lb), its catch rate is 20 less than normal.