Killerwatt

Monster
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IdleAttacking
Killerwatt
Released20 February 2006 (Update)
MembersYes
Combat level55
Size1x1
ExamineA ball of electrical energy.
Combat info
XP bonus+0%
Max hit8 (Ranged)
6 (Melee)
15 (Ranged; without Insulated boots)
AggressiveNo
PoisonousNo
Attack styleStab, Magical ranged
Attack speed2 ticks (1.2 seconds)
Respawn time30 ticks (18 seconds)
Slayer info
Slayer level37
Slayer XP51 xp
CategoryKillerwatts
Assigned by
Combat stats
515050406767
Aggressive stats
Monster attack bonusMonster strength bonusMonster magic strength bonusMonster ranged strength bonus
+30+0+0+0+0+0
Melee defence
+10+10+10
Magic defence
Air elemental weakness
+2060% weakness
Ranged defence
LightStandardHeavy
-10-10-10
Immunities
Poison0% resistance
Venom0% resistance
CannonsNot immune
ThrallsNot immune
Advanced data
Monster ID470
LinkMOID

Killerwatts are Slayer monsters located in the Killerwatt plane, accessible through a portal at the top floor of Draynor Manor. A Slayer level of 37 as well as the completion of Ernest the Chicken is required in order to kill them. If a player is not wearing a pair of Insulated boots while fighting them, their Ranged attacks will have a much higher maximum hit. Just like their standard ranged attacks however, this damage can be mitigated using Protect from Missiles. A Dwarf multicannon cannot be set up in the Killerwatt plane.

Killerwatts are a commonly skipped Slayer task due to their relatively high damage output combined with their mediocre drops.

Locations

Location Levels Members Spawns Map League region
Killerwatt plane[l 1]55Members26Show mapMisthalin Misthalin✓
  1. ^ Requires completion of Ernest the Chicken

Strategy

Killerwatts initially appear as passive floating orbs of electricity, once clicked though they will immediately grow limbs and become hostile. As soon as they are clicked, Killerwatts will attempt to get into melee range, regardless if the player cancels the attack or not and will continue to do so until it dies, the player leaves the Killerwatt plane, dies or logs off.

Killerwatts are much more dangerous than their combat level may suggest; both their Ranged and Melee attacks have an attack speed of two ticks, thus attacking players every 1.2 seconds, twice as often as an Abyssal whip or a Scimitar. On top of this, their melee attacks are exceptionally accurate.

There are two recommended ways to fight the Killerwatt, depending on choice of player equipment and preference.

The first is to simply safespot the Killerwatts using the nearby clouds or over the holes of the plane; while they will still attack you using their ranged attacks, it will remove their ability to use their more accurate melee attacks and instead only try their Magical ranged attacks against your Dragonhide armour.

The second technique revolves around 'attacking' them with a melee weapon equipped then canceling, making them engage the player first. This will force the Killerwatt to attack the player using only their melee attacks, which while accurate, can be tried against the player's melee armour. When using this technique it is advisable to turn run off and to click a Killerwatt that is quite far away from you. This gives more time for you to click away from the Killerwatt and stand still and allow the Killerwatt to walk towards your character and hit you first. If your character hits the Killerwatt first it will be able to use it's magical range attack which you want to avoid.

All the Killerwatt's attacks can be mitigated using Protection prayers and while difficult, can even be Prayer-flicked.

Drops

Drop rates are estimated based on 63,929 samples from the Drop Rate Project, unless otherwise cited.

The average Killerwatt kill is worth 769.33.

100%

Item Quantity Rarity Price High Alch
Ashes.png: Killerwatt drops Ashes with rarity Always in quantity 1Ashes1Always391

Weapons

Item Quantity Rarity Price High Alch
Staff of fire.png: Killerwatt drops Staff of fire with rarity 2/140 in quantity 1Staff of fire12/140904900
Staff of air.png: Killerwatt drops Staff of air with rarity 2/140 in quantity 1Staff of air12/1401,621900
Fire battlestaff.png: Killerwatt drops Fire battlestaff with rarity 1/140 in quantity 1Fire battlestaff11/1408,7259,300
Air battlestaff.png: Killerwatt drops Air battlestaff with rarity 1/140 in quantity 1Air battlestaff11/1408,6859,300
Mystic fire staff.png: Killerwatt drops Mystic fire staff with rarity 1/512 in quantity 1Mystic fire staff11/51224,78525,500

Runes and ammunition

Item Quantity Rarity Price High Alch
Air rune.png: Killerwatt drops Air rune with rarity 3/140 in quantity 5Air rune53/1402510
Air rune.png: Killerwatt drops Air rune with rarity 2/140 in quantity 17Air rune172/1408534
Fire rune.png: Killerwatt drops Fire rune with rarity 5/140 in quantity 18Fire rune185/1409036
Fire rune.png: Killerwatt drops Fire rune with rarity 8/140 in quantity 45Fire rune458/14022590
Nature rune.png: Killerwatt drops Nature rune with rarity 11/140 in quantity 8Nature rune811/1401,368864
Nature rune.png: Killerwatt drops Nature rune with rarity 1/140 in quantity 37Nature rune371/1406,3273,996
Chaos rune.png: Killerwatt drops Chaos rune with rarity 9/140 in quantity 4Chaos rune49/140424216
Death rune.png: Killerwatt drops Death rune with rarity 3/140 in quantity 2Death rune23/140370216
Steam rune.png: Killerwatt drops Steam rune with rarity 2/140 in quantity 2Steam rune22/14018624
Steel cannonball.png: Killerwatt drops Steel cannonball with rarity 2/140 in quantity 3Steel cannonball32/1408169

Herbs

There is a 35/140 chance of rolling the herb drop table.

Item Quantity Rarity Price High Alch
Grimy guam leaf.png: Killerwatt drops Grimy guam leaf with rarity 1/16 in quantity 1Grimy guam leaf11/161897
Grimy marrentill.png: Killerwatt drops Grimy marrentill with rarity 1/21.3 in quantity 1Grimy marrentill11/21.31858
Grimy tarromin.png: Killerwatt drops Grimy tarromin with rarity 1/28.4 in quantity 1Grimy tarromin11/28.41209
Grimy harralander.png: Killerwatt drops Grimy harralander with rarity 1/36.6 in quantity 1Grimy harralander11/36.62849
Grimy ranarr weed.png: Killerwatt drops Grimy ranarr weed with rarity 1/46.5 in quantity 1Grimy ranarr weed11/46.55,26218
Grimy irit leaf.png: Killerwatt drops Grimy irit leaf with rarity 1/64 in quantity 1Grimy irit leaf11/641,25810
Grimy avantoe.png: Killerwatt drops Grimy avantoe with rarity 1/85.3 in quantity 1Grimy avantoe11/85.31,34110
Grimy kwuarm.png: Killerwatt drops Grimy kwuarm with rarity 1/102.4 in quantity 1Grimy kwuarm11/102.41,81412
Grimy cadantine.png: Killerwatt drops Grimy cadantine with rarity 1/128 in quantity 1Grimy cadantine11/1282,07613
Grimy lantadyme.png: Killerwatt drops Grimy lantadyme with rarity 1/170.7 in quantity 1Grimy lantadyme11/170.71,23213
Grimy dwarf weed.png: Killerwatt drops Grimy dwarf weed with rarity 1/170.7 in quantity 1Grimy dwarf weed11/170.71,34314

Coins

Item Quantity Rarity Price High Alch
Coins_5.png: Killerwatt drops Coins with rarity 23/140 in quantity 11Coins1123/1401111
Coins_25.png: Killerwatt drops Coins with rarity 28/140 in quantity 44Coins4428/1404444
Coins_25.png: Killerwatt drops Coins with rarity 1/140 in quantity 76Coins761/1407676
Coins_100.png: Killerwatt drops Coins with rarity 1/140 in quantity 127Coins1271/140127127
Coins_100.png: Killerwatt drops Coins with rarity 11/140 in quantity 200Coins20011/140200200

Other

Item Quantity Rarity Price High Alch
Fire orb.png: Killerwatt drops Fire orb with rarity 1/140 in quantity 2Fire orb21/1403,904360
Soda ash.png: Killerwatt drops Soda ash with rarity 1/140 in quantity 4Soda ash41/1401324

Gem drop table

There is a 5/140 chance of rolling the gem drop table.

Item Quantity Rarity Price High Alch
This does not exist.NothingN/A1/56.1; Never[d 1]N/AN/A
Uncut sapphire.png: Killerwatt drops Uncut sapphire with rarity 1/112 in quantity 1Uncut sapphire11/112; 1/56.87[d 2]22815
Uncut emerald.png: Killerwatt drops Uncut emerald with rarity 1/224 in quantity 1Uncut emerald11/224; 1/113.75[d 2]47330
Uncut ruby.png: Killerwatt drops Uncut ruby with rarity 1/448 in quantity 1Uncut ruby11/448; 1/227.5[d 2]1,08760
Nature talisman.png: Killerwatt drops Nature talisman with rarity 1/1,194.67 in quantity 1Nature talisman11/1,194.67; 1/606.67[d 2]2682
Uncut diamond.png: Killerwatt drops Uncut diamond with rarity 1/1,792 in quantity 1Uncut diamond11/1,792; 1/910[d 2]2,439120
Rune javelin.png: Killerwatt drops Rune javelin with rarity 1/3,584 in quantity 5Rune javelin51/3,584; 1/1,820[d 2]6751,200
Loop half of key.png: Killerwatt drops Loop half of key with rarity 1/3,584 in quantity 1Loop half of key11/3,584; 1/1,820[d 2]9,75660
Tooth half of key.png: Killerwatt drops Tooth half of key with rarity 1/3,584 in quantity 1Tooth half of key11/3,584; 1/1,820[d 2]9,88760
Rune spear.png: Killerwatt drops Rune spear with rarity 1/57,344 in quantity 1Rune spear11/57,344; 1/3,412.5[d 2][d 3]11,59912,480
Shield left half.png: Killerwatt drops Shield left half with rarity 1/114,688 in quantity 1Shield left half11/114,688; 1/6,825[d 2][d 3]65,35566,000
Dragon spear.png: Killerwatt drops Dragon spear with rarity 1/152,917.33 in quantity 1Dragon spear11/152,917.33; 1/9,100[d 2][d 3]38,43837,440
  1. ^ The "nothing" drop is removed while wearing a ring of wealth.
  2. ^ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
  3. ^ 3.0 3.1 3.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

Changes

Date Changes
25 June 2025
(Update)

Killerwatts now have a 60% elemental weakness to wind spells.

8 May 2024
(Update)

The ranged defence of killerwatts has been reduced from 20 to -10. Vannaka no longer assigns players Killerwatt tasks.

21 February 2024
(Update)

The killerwatt's flickering has been toned down, so the epilepsy warning when entering the killerwatt plane has been removed.

Trivia

  • 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 Enlightened Journey, and while unlocking routes for the Balloon transport system, some killerwatts can be seen standing on top of clouds, trees, rocks and buildings. Despite this, they cannot be fought anywhere outside of the killerwatt plane.