Killerwatt
Killerwatt is a level 55 members monster found in Misthalin, with 3,600 life points. It needs 37 Slayer to damage and is weak to crush weapons. It is the top source of Killerwatt energy, Staff of air and Staff of fire.
“'''Idle:''' A ball of electrical energy. '''In combat:''' An angry electrical shock!”
Level 55MembersSlayer 37Attacks with ranged
Updated . Stats and drops from the RuneScape Wiki's monster and drop data (CC BY-NC-SA 3.0), checked 2026-10-09. Wiki page. Item sprites © Jagex.
Combat stats
- Combat level
- 55
- Life points
- 3,600
- Combat XP per kill
- 180
- Max hit
- 510
- Armour
- 710
- Attack style
- Ranged
- Weakness
- Crush
- Aggressive
- No
- Poisonous
- No
Slayer
Ironman notes
- You need 37 Slayer to damage it, so plan the Slayer levels before the trip.
- Counts as a Slayer task from Mazchna (task: killerwatts). Killing it on task earns Slayer XP and points.
- Weak to crush weapons: bring that style for faster kills.
- A herb source: it drops 11 kinds of grimy herb, useful for Herblore without farming runs.
- Drops gold charm, crimson charm, green charm and blue charms for Summoning pouches.
- Always drops Impious ashes: Prayer XP as you go.
- It can also roll the shared rare drop table (gems, key halves and bulk supplies); luck items improve those odds.
Best for
Best drop rate anywhere
Of every monster that drops these, this one gives the most per kill.
- Staff of air6/128
- Staff of fire6/128
Easiest monster for
The lowest-level monster that drops these, if the best one is out of reach.
- Air battlestaff1/128
- Mystic fire staff1/512
Drops (32)
| Item | Quantity | Rarity |
|---|---|---|
| Coins | 300 | 22/128 |
| Killerwatt energyOnly source | 10 | Always |
| Impious ashes#3 rate | 1 | Always |
| Air rune | 5 | 10/128 |
| Fire rune | 5 | 10/128 |
| Soda ashEasiest | 2 (noted) | 14/128 |
| Cannonball | 3 | 9/128 |
| Gold charm | 1 | 192/1,000 |
| Iron stone spirit | 2 | 12/128 |
| Grimy guam | 1 | 1/18.3 |
| Staff of airBest rate | 1 | 6/128 |
| Staff of fireBest rate | 1 | 6/128 |
| Grimy marrentill | 1 | 1/24.4 |
| Grimy tarromin | 1 | 1/32.5 |
| Grimy harralander | 1 | 1/41.8 |
| Grimy ranarr | 1 | 1/53.2 |
| Crimson charm | 1 | 13.7/1,000 |
| Green charm | 1 | 13.7/1,000 |
| Grimy irit | 1 | 1/73.1 |
| Grimy avantoe | 1 | 1/97.5 |
| Grimy kwuarm | 1 | 1/117 |
| Air battlestaffEasiest | 1 | 1/128 |
| Grimy cadantine | 1 | 1/146.3 |
| Grimy dwarf weed | 1 | 1/195 |
| Grimy lantadyme | 1 | 1/195 |
| Blue charm | 1 | 2.74/1,000 |
| Spirit sapphire#2 rate | 1 | 5/2,000 |
| Mystic fire staff#2 rateEasiest | 1 | 1/512 |
| Spirit emerald#2 rate | 1 | 3/2,000 |
| Spirit ruby#2 rate | 1 | 2/2,000 |
| Mimic kill token | 1 | 1/9,945 |
| Starved ancient effigy | 1 | 1/61,728 |
Most common first. “Best rate” and “#2/#3 rate” compare expected drops per kill with every other monster that drops the item. Rare drop table items are not repeated here.