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RuneScape 3 icon

Release date 20 feb 2006
Members? Yes
Combat 55
Hit points 51
Slayer level 37
Slayer XP 51
Aggressive No
Poisonous No
Immune to poison? No
Attack style Melee, Magical Ranged
Attack speed Monster attack speed 8
Max hit 6
Weakness Stab
Always drops Ashes
A ball of electrical energy.
Killerwatt icon

Killerwatts are Slayer monsters located through a portal on the top floor of Draynor Manor that require level 37 Slayer to kill as well as completing Ernest the Chicken. Players are suggested to wear insulated boots to enter the Killerwatt plane and to fight them; if you are not wearing insulated boots before you enter the portal, Professor Oddenstein will warn the player, giving them the option of whether or not to go in. If you put them on after you are inside, you will get hit for 1-14 Hitpoints by the thunderclouds inside the area.

Warning: Killerwatts are much more dangerous than what their combat level may suggest; both their Ranged and Melee attacks will hit players every 1.2 seconds, much faster than the speed of an Abyssal whip or scimitars, and their melee attacks are exceptionally accurate, although Prayer flicking is still possible despite their attack speed. Using Ranged or Magic from across clouds will limit them to their Ranged attack, allowing players with prayer to safely complete this Slayer task. As usual, using the Protect from Melee prayer will prevent all Melee damage if a player has brought high Ranged Defence gear. The Protect from Missiles prayer will prevent all Ranged damage. Their Ranged attack is magic-based, and thus high Magic Defence armour such as dragonhide will provide the best defence against the Ranged attack.

There is a way to prevent the killerwatts from using their Ranged attack effectively greatly reducing their damage rate, and allowing you to fight them in metal armours. They will not attack you with Ranged attacks unless you strike first. Therefore, when using a Melee weapon, you can click the killerwatt from a distance, and then click the ground to stop moving towards the killerwatt. Turning run off will make it much easier to stop yourself before you strike the killerwatt. This will make the killerwatt aggressive to you, and it will approach and attack you in melee, striking you first. With auto-retaliate on, you can retaliate without triggering their Ranged attack. If you accidentally strike a killerwatt first, you can use Protect from Missiles and/or retreat through the portal. After returning through the portal, the killerwatt will no longer be aggressive towards you, but you also can not attack it without triggering its Ranged attacks until it reverts to its base form.

Drops Edit

100% drop Edit

Item Quantity Rarity GE market price
Ashes Ashes 1 Always 32

Weapons/Armour Edit

Item Quantity Rarity GE market price
Staff of fire Staff of fire 1 Uncommon 1,036
Staff of air Staff of air 1 Uncommon 1,775
Fire battlestaff Fire battlestaff 1 Uncommon 9,687
Air battlestaff Air battlestaff 1 Uncommon 9,145
Mystic fire staff Mystic fire staff 1 Uncommon 27,033


Item Quantity Rarity GE market price
Guam leaf Guam leaf 1 Common 18
Marrentill Marrentill 1 Common 13
Tarromin Tarromin 1 Common 53
Harralander Harralander 1 Common 533
Ranarr weed Ranarr weed 1 Uncommon 7,492
Irit leaf Irit leaf 1 Uncommon 967
Avantoe Avantoe 1 Uncommon 1,977
Kwuarm Kwuarm 1 Uncommon 3,033
Cadantine Cadantine 1 Uncommon 2,651
Lantadyme Lantadyme 1 Rare 1,205
Dwarf weed Dwarf weed 1 Rare 2,118

Runes Edit

Item Quantity Rarity GE market price
Air rune Air rune 5; 17 Common 25–85
Fire rune Fire rune 18; 45 Common 90–225 
Nature rune Nature rune 8; 37 Uncommon 1,888–8,732 
Chaos rune Chaos rune 4 Uncommon 380
Death rune Death rune 2 Uncommon 596
Steam rune Steam rune 2 Uncommon 138 

Other Edit

Item Quantity Rarity GE market price
Coins 100 Coins 11–21; 44; 127; 156; 200 Common Not sold
Cannonball Cannonball 3 Uncommon 660
Fire orb Fire orb 2 Uncommon 2,742
Soda ash Soda ash 4 Uncommon 252

Rare drop table

In addition to the drops above, this monster also has access to the rare drop table.

Show/hide rare drop table
Item Quantity Rarity GE market price
Coins 1000 Coins 3,000 Common Not sold
Uncut sapphire Uncut sapphire 1 Common 1,023
Loop half of key Loop half of key 1 Common 8,708
Tooth half of key Tooth half of key 1 Common 25,636
Uncut emerald Uncut emerald 1 Uncommon 1,179
Uncut ruby Uncut ruby 1 Uncommon 1,531
Nature talisman Nature talisman 1 Uncommon 578
Chaos talisman Chaos talisman 1 Uncommon 250
Nature rune Nature rune 67 Uncommon 15,812
Runite bar Runite bar 1 Uncommon 13,982
Rune spear Rune spear 1 Rare 11,908
Rune battleaxe Rune battleaxe 1 Rare 27,472
Rune 2h sword Rune 2h sword 1 Rare 40,719
Uncut diamond Uncut diamond 1 Rare 3,425
Rune javelin Rune javelin 5 Rare 1,035
Silver ore Silver ore 100 (noted) Rare 13,700
Adamant javelin Adamant javelin 20 Rare 840
Rune sq shield Rune sq shield 1 Rare 25,121
Steel arrow 5 Steel arrow 150 Rare 4,500
Rune arrow 5 Rune arrow 42 Rare 6,132
Law rune Law rune 45 Rare 9,495
Death rune Death rune 45 Rare 13,410
Dragonstone Dragonstone 1 Rare 25,173
Rune kiteshield Rune kiteshield 1 Rare 35,772
Dragon med helm Dragon med helm 1 Rare 61,795
Shield left half Shield left half 1 Very rare 73,120
Dragon spear Dragon spear 1 Very rare 113,359

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