Killerwatt

Killerwatts are Slayer monsters that require level 37 Slayer to kill. Players must wear insulated boots to fight them; otherwise, they will get hit for up to 14 damage by the thunderclouds inside the area. Note: as soon as you select it as an attack target it will run towards you and attack you as if it were aggressive, sometimes attacking you first. They are a fairly underrated monster, with common Nature rune drops and the occasional air/fire battlestaff drop. At around 70 Defence or Magic, they do not hit as often, especially against black dragonhide armour.

Warning: Killerwatts are much more dangerous than what their combat level may suggest; they can attack very frequently, and are very accurate. Only fight them when wearing armour that has a high magic defence bonus.

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

Note: The killerwatt plane is filled with flashing lights, so players with eye problems or epilepsy should either play in low detail, turn off the flickering effects in the graphic settings, or not go in there at all.

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

Strengths and weaknesses
Killerwatts use both ranged and melee, and can hit very rapidly. On distance they will always attack with ranged so if you can, use the Protect from Missiles prayer and pack several vials of Prayer potion. Wearing dragonhide armour can help resist some of the Melee attacks. As they attack extremely rapidly, eating while killing them is not recommended as the killerwatt can hit more than you can eat.

Slayers with a combat level under 100 generally change, skip or remove this monster.

If you let the killerwatt hit you with a melee attack before you hit them, they will only attack you with melee. They still attack fast, but with only melee damage to worry about it should be a lot easier. However, this will not be true if you melee them and then run and try to use ranged. Simply click on a faraway killerwatt and click on the ground near you to make sure he hits you first. Being in walk mode will prevent you from running up to him and hitting him first. Keep in mind even though you're wearing armour protecting you from magic, using protect from magic won't do anything; Protect from melee will work when they're not ranging.(You'll know if they're ranging if it sounds like air strike).

100% Drop

 * Ashes

Other

 * 11 or 44 or 200 coins
 * 3 cannonballs
 * 2 fire orb
 * 4 soda ash
 * Nature talisman
 * 5 rune javelin
 * 1 Loop half of a key (semi-rare)
 * 1 Tooth half of a key (rare)

Magic Staves

 * Staff of fire
 * Staff of air
 * Fire battlestaff
 * Air battlestaff
 * Mystic fire staff

Gems

 * Uncut sapphire
 * Uncut emerald
 * Uncut ruby
 * Uncut diamond

Runes

 * 2 Steam runes
 * 5 or 17 air runes
 * 18 or 45 fire runes
 * 4 chaos runes
 * 4, 8 or 37 nature runes
 * 2 death runes

Herbs
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 * [[Grimy guam|Grimy guam (common)
 * Grimy marrentill
 * Grimy tarromin
 * Grimy harralander
 * Grimy irit
 * Grimy ranarr
 * Grimy kwuarm
 * Grimy avantoe
 * Grimy lantadyme
 * Grimy dwarf weed

Charms
Please add your charm drop rates to the next template: 
 * Gold charm
 * Crimson charm
 * Green charm
 * Blue charm

Trivia

 * The name is a play on "kilowatt", a unit of power, with the word "killer" included to imply its hostility.
 * If a storm cloud moves onto the square of a Killerwatt you are fighting, the Killerwatt will disappear, and your character will appear to be fighting empty space.
 * When you go to attack Killerwatts, you stay in place and they will come to you if their feet aren't showing, otherwise, if their feet are showing you will go to it.
 * During the Enlightened Journey quest, it is revealed that Killerwatts live in the clouds over Gielinor

Killerwatt