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Killerwatts are Slayer monsters that require level 37 Slayer to kill. Wear insulated boots to enter the Killerwatt plane; if you are not wearing insulated boots before you enter the portal, Professor Oddenstein will warn you. If you enter without them or take them off after you are inside, you will get hit for up to ~1500 life points by the thunderclouds inside the area.

Killerwatts initially appear as passive spheres of electricity, but when they are attacked they become aggressive immediately, growing arms and a tail. Like aviantese, they will retaliate as soon as the attack option is selected, regardless of whether the player has landed a hit on them.

Killerwatt drops include common fire and Nature runes, and the occasional air or fire battlestaff drop. At around 50 Defence, food isn't required with good armour as they do not hit often. Players with level 55 Magic can use the fire and nature rune drops to turn the other drops into coins. Killerwatts also drop ashes; players can bring urns for Prayer experience.

Warning: Killerwatts are much more dangerous than their combat level suggests; both their ranged and melee attacks are as fast as dual wielded "fastest" weapons, and their ranged attacks are exceptionally accurate. Instead of relying on protection prayers, it is better to bring food and use your prayer for attack boosts. Players cannot use the Dwarf multicannon in the Killerwatt plane.

Storm cloud

A storm cloud


Killerwatt portal

The portal

Killerwatts can be found on the Killerwatt plane, by stepping through a portal on the top floor of Draynor Manor.

During the Enlightened Journey quest, it was revealed by the balloon travelling screen that killerwatts inhabit clouds. However, players cannot engage them in battle here.

Strengths and weaknessesEdit

Killerwatts use both ranged and melee, and can hit very rapidly. Their ranged attack are quite dangerous but their melee attacks are much milder. 

Their weakness is crush, therefore it is advised to bring a crush weapon such as a warhammer or mace. Wear melee armour to defend against the ranged attack; a full set of Void Knight equipment is also a good option, with its accuracy and damage bonuses.


Killerwatts attack in a manner similar to Aviansie; when they are attacked regardless of whether the player can hit them, they will immediately become aggressive. This can be taken advantage of, however, as if the killerwatt lands the first strike, it will only use its weaker melee attacks. To make this happen, select a killerwatt at a distance.  You must not be standing in your target's area (you can see that the clouds form small separate territories once you know what to look for). Once the killerwatt becomes aggressive, immediately click the ground near you to avoid running towards it. Your target is now considered the "attacker" and will track you while you approach. When you get near, it will attack with melee.

There are two potentially serious mistakes you can make; you can select a target that is too close, and find yourself under heavy ranged fire. You can also accidentally click on another killerwatt while approaching your target, and be under unexpected ranged damage from the second killerwatt.  For low level fighters, damage will be immediate and serious.  Fortunately, the portal remains open at all times - if you find yourself under fire, run for the portal and exit the plane, reenter and try again. Because approaching your selected target is crucial, you might want to move in a spiral toward your selected target to avoid clicking its area until you are in melee combat. If you are having trouble managing your fights, disable 'run' and give yourself more time to plan.


100% dropsEdit

Item Quantity Rarity GE market price
Impious ashesImpious ashes1Always85


Item Quantity Rarity GE market price
Staff of airStaff of air1Uncommon610
Staff of fireStaff of fire1Uncommon687
Air battlestaffAir battlestaff1Rare8,617
Mystic fire staffMystic fire staff1Rare24,414


Charm drop numbers
No charmGold charmGreen charmCrimson charmBlue charm
Represents a 90% confidence range.
Based on a sample of 23,774 kills.
1 charm is dropped at a time.
Add data to the log
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Item Quantity Rarity GE market price
Grimy guamGrimy guam1Common244
Grimy marrentillGrimy marrentill1Common216
Grimy tarrominGrimy tarromin1Common54
Grimy harralanderGrimy harralander1Common150
Grimy ranarrGrimy ranarr1Uncommon2,114
Grimy iritGrimy irit1Uncommon1,659
Grimy avantoeGrimy avantoe1Uncommon3,594
Grimy kwuarmGrimy kwuarm1Uncommon5,053
Grimy cadantineGrimy cadantine1Uncommon4,962
Grimy lantadymeGrimy lantadyme1Rare4,801
Grimy dwarf weedGrimy dwarf weed1Rare4,789


Item Quantity Rarity GE market price
Air runeAir rune5Common125
Fire runeFire rune5Common400


Item Quantity Rarity GE market price
Coins 250Coins300; 600Uncommon300–600
Iron barIron bar2 (noted)Uncommon830
AshesSoda ash2 (noted)Uncommon50
Spirit sapphireSpirit sapphire1RareNot sold
Spirit emeraldSpirit emerald1RareNot sold
Spirit rubySpirit ruby1RareNot sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold

Rare drop table dropsEdit

This monster has access to the rare drop table.
The ring of wealth is not required to access the table.
Show/hide rare drop table
Item Quantity Rarity GE market price
Coins 1000Coins250–500; 3,000Common250–3,000
Uncut sapphireUncut sapphire1Common806
Uncut emeraldUncut emerald1Common1,351
Uncut rubyUncut ruby1Common2,235
Uncut diamondUncut diamond1Common3,841
Uncut diamondUncut diamond45–55 (noted)Rare172,845–211,255
Loop half of a keyLoop half of a key1Uncommon17,627
Tooth half of a keyTooth half of a key1Uncommon32,079
Uncut dragonstoneUncut dragonstone1Uncommon11,934
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare537,030–656,370
Dragon longswordDragon longsword1Common57,663
Dragon spearDragon spear1Uncommon36,402
BattlestaffBattlestaff180–220 (noted)Uncommon1,314,360–1,606,440
Rune javelinRune javelin5Rare910
Rune platebodyRune platebody1Uncommon37,924
Rune platebodyRune platebody15–25 (noted)Rare568,860–948,100
Shield left halfShield left half1Uncommon64,942
Dragon helmDragon helm1Uncommon59,291
Rune arrowheads 5Rune arrowheads113–137Common22,713–27,537
Onyx bolts 5Onyx bolts135–165Rare1,111,860–1,358,940
Vecna skullVecna skull1Uncommon52,293
Chaos talismanChaos talisman1Uncommon814
Nature talismanNature talisman1Uncommon757
Water talismanWater talisman65–82 (noted)Rare523,835–660,838
Earth talismanEarth talisman65–82 (noted)Rare129,545–163,426
Fire talismanFire talisman25–35 (noted)Rare41,325–57,855
Raw lobsterRaw lobster135–165 (noted)Uncommon22,680–27,720
Raw sharkRaw shark225–275 (noted)Uncommon223,200–272,800
Big bonesBig bones79–90 (noted)Uncommon29,151–33,210
Dragon bonesDragon bones180–220 (noted)Uncommon501,660–613,140
CoalCoal200–1,100 (noted)Uncommon85,000–467,500
Gold oreGold ore90–110 (noted)Common11,610–14,190
Adamantite oreAdamantite ore180–220 (noted)Uncommon252,900–309,100
Adamant barAdamant bar15 (noted)Common40,095
Adamant barAdamant bar135–165 (noted)Rare360,855–441,045
Runite oreRunite ore90–110 (noted)Rare905,850–1,107,150
Rune barRune bar3 (noted)Common42,843
Rune barRune bar45–55 (noted)Rare642,645–785,455
Grimy torstolGrimy torstol90–110 (noted)Uncommon398,160–486,640
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon294,300–359,700
Super restore (4)Super restore (4)45–55 (noted)Uncommon180,315–220,385
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon125,100–152,900
Herb seed 5Lantadyme seed14–16Uncommon45,766–52,304
Herb seed 5Dwarf weed seed14–16Uncommon63,154–72,176
Magic seed 5Magic seed4Uncommon401,564
Palm tree seed 5Palm tree seed10Rare1,500,700
FlaxFlax450–550 (noted)Common9,000–11,000
Molten glassMolten glass45–55 (noted)Common5,625–6,875
Soft claySoft clay450–550 (noted)Uncommon147,150–179,850
Yew logsYew logs68–82Uncommon14,212–17,138
Yew logsYew logs675–825 (noted)Rare141,075–172,425
Teak plankTeak plank45–55 (noted)Uncommon28,170–34,430
Mahogany plankMahogany plank270–330 (noted)Rare556,740–680,460
Brawling gloves (Melee)Brawling gloves (Melee)1RareNot sold
Brawling gloves (Magic)Brawling gloves (Magic)1RareNot sold
Brawling gloves (Ranged)Brawling gloves (Ranged)1RareNot sold
Brawling gloves (Agility)Brawling gloves (Agility)1RareNot sold
Brawling gloves (Cooking)Brawling gloves (Cooking)1RareNot sold
Brawling gloves (FM)Brawling gloves (FM)1RareNot sold
Brawling gloves (Fishing)Brawling gloves (Fishing)1RareNot sold
Brawling gloves (Hunter)Brawling gloves (Hunter)1RareNot sold
Brawling gloves (Mining)Brawling gloves (Mining)1RareNot sold
Brawling gloves (Prayer)Brawling gloves (Prayer)1RareNot sold
Brawling gloves (Smithing)Brawling gloves (Smithing)1RareNot sold
Brawling gloves (Thieving)Brawling gloves (Thieving)1RareNot sold
Brawling gloves (WC)Brawling gloves (WC)1RareNot sold
Crystal triskelion fragment 1Crystal triskelion fragment 11Very rareNot sold
Crystal triskelion fragment 2Crystal triskelion fragment 21Very rareNot sold
Crystal triskelion fragment 3Crystal triskelion fragment 31Very rareNot sold

Universal dropsEdit

Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Item Quantity Rarity GE market price
Key tokenKey token1RareNot sold


  • The name is a play on "kilowatt", a unit of power, with the word "killer" included to imply their hostility, or that they may give a deadly amount of watts.
  • During the Enlightened Journey quest, it is revealed that Killerwatts live in the clouds over Gielinor.
  • In the Balloon transport system, the images of Killerwatts are what they looked like before their graphical update.
  • Before the evolution of combat, slayers who didn't want to spend the money to consistently use prayer or make multiple trips would often change, skip or remove this monster. However, good tactics and the evolution of combat make these monsters relatively easy to kill.

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