Laboratory

For Builder Base version, see Star Laboratory.

"What dark secrets do the Alchemists hide inside their Laboratory? Nobody has dared to look. All we know is that their research makes our spells and troops harder, better, faster and stronger!"

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Level 1	Level 2	Level 3	Level 4	Level 5	Level 6

Level 7	Level 8	Level 9	Level 10	Level 11

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• Summary
  • The Laboratory is a building where you can upgrade your Troops and your Spells. For a single research fee of Elixir or Dark Elixir, or one Hammer of Fighting or Hammer of Spells (which will instantly finish the upgrade), a chosen troop, spell or siege machine's stats (health, damage, etc.) and cost (not increased for siege machines) will increase by a small amount.
  • If you decide to upgrade your Laboratory while there is research going on, the laboratory upgrade will continue while the laboratory is upgrading, even though it will appear to have continued where it left off when you started the upgrade. The true progress can be seen by re-logging in back into the game, after the Laboratory upgrade is completed.
    • If the unit upgrade would finish while the Laboratory is upgrading, the upgrade will not be completed until the Laboratory upgrade itself is complete.
  • You cannot cancel the research while it is in progress, but you can immediately complete the upgrade. There are two methods to do so: using Gems, or with the relevant Magic Items (a Book of Fighting for troops, a Book of Spells for spells; a Book of Everything can be used for either).
  • The Laboratories emit a purple (level 1-6), blue (level 7), red (level 8) or yellow (level 9-11) glow from the entrances when upgrading a unit.
  • You do not need an available Builder to upgrade in the Laboratory.
  • Different levels of troops will receive graphical changes. However, when you are upgrading a troop, the laboratory interface doesn't show what it looks like after the upgrade.
  • When a Laboratory upgrade is completed, it is applied immediately to any relevant troops, spells, or siege machines that are present on the village, wherever they may be (whether it is already ready or is being trained at the time that the upgrade completes). You do not have to create new instances of the upgraded unit to benefit from the upgrade.
    • As a result, due to upgraded units having higher creation costs, you can queue the unit being upgraded in the relevant building just before the upgrade finishes, and then un-queue the unit when the upgrade finishes to gain some resources.
  • The upgrades inside the Laboratory take around the same amount of time as upgrading defenses and other buildings, but because players can only perform one laboratory upgrade at a time as opposed to multiple buildings at a time, these laboratory upgrades appear to take longer overall. Therefore, it is often in the player's best interest to keep the Laboratory running whenever possible. Certain Magic Items, such as the Book of Fighting or the Research Potion, can also help with laboratory research.

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• Upgrade Differences
  • Laboratories undergo significant visual changes at all levels except levels 4 and 5.
    • When initially constructed, the Laboratory consists of a wooden octagonal structure with multiple door-less entrances. A mass of black tubing covers the center of the Laboratory's roof.
    • At level 2, the Laboratory adds a large vat of Elixir mounted on one side, while the roof is reinforced with steel. A dial is on the vat of elixir, and wires connect it to the roof, near the black tubing.
    • At level 3, the Laboratory's roof adds a large black dome with circular elixir-colored ports.
    • At level 4, the doorways receive a golden trim.
    • At level 5, a second Identical Elixir vat is added to the left wall.
    • The level 6 Laboratory receives a faceted crystal sphere on its roof supported by a black iron rod and a helical golden spring. Electricity periodically runs up the surface of the sphere.
    • At level 7, the crystal sphere is replaced by a huge set of stacked circular gold rings, identical to those found atop the level 7 Hidden Tesla. The elixir vat on the left side of the Laboratory is replaced with a larger one filled with Dark Elixir. The ringed structure on the roof crackles periodically with electricity. The dark color theme indicates that this level is unlocked at Town Hall level 9.
    • At level 8, the circular gold rings are replaced with a vertical tube glowing from the inside. This tube is emblazoned with what appears to be the symbol representing radioactive material, which indicates that the liquid is likely radioactive. The doorposts turn to a dark red color. It seems that fiery red-orange fluid is filling the left chamber. The dial also starts moving back and forth rapidly, showing that the vat may be overflowing. During an upgrade, the vertical tube spews fire. The red color theme indicates that this level is unlocked at Town Hall level 10.
    • At level 9, the stack of rings is re-added to the top of the Laboratory, instead this time the rings are white rather than gold. The doorpost turns from a dark red to white. The red fluid on the left side is changed to yellow. The white and yellow color theme indicates that this level is unlocked at Town Hall level 11.
    • At level 10, the Laboratory takes on a blue-gray color scheme. The stack of rings is now replaced with a giant yellow screw, which twists in and out of the roof when an upgrade is in progress. The dial from level 8 returns and is now larger than before. The fluid vat on the left is now replaced by a metal tube with a cyan glow in the middle. The yellow and blue color scheme indicates that this level is unlocked at Town Hall level 12.
    • At Level 11, the Laboratory receives a darker blue color scheme. The roof has a thick band that encases the giant yellow screw, which is now replaced by a tube covered in ice. The doorposts are also covered in ice. The fluid vat on the left is slightly taller and darker. The icy theme and dark blue color indicate that this level is unlocked at Town Hall Level 13.

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• Trivia
  • Although a particular troop or spell may be listed in the table below as being available to upgrade at a particular Laboratory level, only those you have previously unlocked (with the appropriate level Barracks, Dark Barracks, Spell Factory or Dark Spell Factory) will actually appear in the upgrade interface. For instance, the level 2 Lightning Spell is available in the level 1 Laboratory, but the Lightning Spell itself is not unlocked until the Spell Factory is built. Once the Spell Factory is constructed, you will be able to upgrade the Lightning Spell as high as your current Laboratory allows.
  • If you have 5 builders that are always working, the laboratory will take a lot longer to max out. Because of this, it is okay to upgrade to the next town hall if you have free builders, even if your lab is not maxed.
  • The conductor on top of the Laboratory on levels 6 and 7 depicts the 'lightning gatherer' that is used to raise the dead creatures to life that are often found in horror movies.
  • The pressure gauges on the side Dark Elixir vats are only seen moving on the level 7 and 8 Laboratory, except for when troops/spells go under upgrade. Then, all laboratory gauges move.
  • The Laboratory is currently the only building that can only be built/upgraded exactly once in every Town Hall level starting from Town Hall 3 to Town Hall 13.
  • The phrase: "Harder, better, faster, and stronger!" is a reference to the French dance duo Daft Punk's widely known song, Harder Better Faster Stronger.
    • None of the troops increase in speed when upgraded. However, upgrading the Rage Spell and Haste Spell in the Lab will produce more speed boosts, which justifies the word "faster".
  • The Laboratory contains 4 entryways instead of 2, they can be seen in the back where the arches for the entryways stand.
  • The size of the Laboratory was reduced from 4x4 to 3x3 in the December 2019 (Town Hall 13) Update.
  • The total time to max out all troops is 4 years, 73 days and 18 hours, one of the hardest buildings to max out in the game.

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• Icon Descriptions

  	Tapping this icon displays information about the Laboratory, such as Level and Hitpoints.
  	Tapping this icon begins upgrading the Laboratory to the next level, if you have enough resources and a free Builder. When the Laboratory is at maximum level, this icon is not shown.
  	Tapping this icon instantly upgrades the Laboratory to the next level, at the cost of one Hammer of Building if you have one. When the Laboratory is at maximum level, this icon is not shown.
  	Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of the displayed number of Gems.
  	Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Building. This icon is only shown if you have at least one Book of Building.
  	Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Everything. This icon is only shown if you have at least one Book of Everything but do not have a Book of Building.
  	Tapping this icon, which is displayed only while an upgrade is in progress, boosts all your Builders for 1 hour by a factor of ten, at the cost of one Builder Potion. This icon is only shown if you have at least one Builder Potion.
  	Tapping this icon, which is displayed only while an upgrade is in progress, cancels the current upgrade and refunds half of the upgrade cost.
  	Tapping this icon boosts your Laboratory for 1 hour by a factor of twenty-four, at the cost of one Research Potion. This icon is only shown if you have at least one Research Potion.
  	Tapping this icon opens up the Laboratory interface, allowing you to upgrade your Troops' and Spells' levels.

Gold Pass modifiers

Input Gold Pass boost to modify the statistics in the tables below accordingly

ApplyReset

Town Hall Level	1	2	3	4	5	6	7	8	9	10	11	12	13
Number Available	0	0	1	1	1	1	1	1	1	1	1	1	1

Size
3x3

Level	Hitpoints	Build Cost	Build Time	Experience Gained	Town Hall Level Required
1	500	25,000	1m	7	3
2	550	50,000	2h	84	4
3	600	90,000	8h	169	5
4	650	270,000	10h	189	6
5	700	500,000	12h	207	7
6	750	1,000,000	1d	293	8
7	830	2,000,000	2d	415	9
8	950	3,000,000	3d	509	10
9	1,070	6,000,000	6d	720	11
10	1,140	8,000,000	8d	831	12
11	1,210	10,000,000	10d	929	13

Upgrade Chart

The following charts list the level of the Laboratory on the top and the unit/spell you can upgrade on the left. Each cell contains the level of the unit/spell you can train, how much it costs in elixir, and how long it takes. For example, Laboratory level 3 allows you to upgrade your Archers to level 3 for 250,000 Elixir and it takes 1 day. The top chart contains Elixir troop upgrades while the bottom chart contains Dark Elixir upgrades. Certain troops and spells don't have new levels unlocked at certain laboratory levels and are represented by ' - 's. For example, there's no new level of Goblin unlocked at Laboratory level 2, however you can upgrade it from level 1 to 2 with a level 2 (or higher) Laboratory if you didn't upgrade it when you had a level 1 Laboratory.

Those indicated by *(italics) show that certain items do not need the Laboratory fully upgraded to gain in levels. Those items are accessible by a lower Laboratory once the Town Hall and any other upgrade criteria is met. For example, a level 1 Laboratory can upgrade the Lightning Spell once the other requirements of Town Hall 5 and Spell Factory (level 1) are met.

Note that for the interest of keeping this table compact, abbreviations for costs and times are used. K and M stand for thousand and million, respectively. Upgrades taking a whole number of days and a half are written as X.5d instead of Xd 12h (for example, an upgrade time of 2d 12h is written as 2.5d).

Elixir

Upgrade Chart		Laboratory Level
		1	2	3	4	5	6	7	8	9	10	11
Barbarian	Level	2	-	3	-	4	5	6	7	8	9	-
	Cost	50K	-	150K	-	500K	1.25M	2.75M	4.5M	7M	11M	-
	Time	6h	-	1d	-	2d	3d	4d	5d	8d	12d	-
Archer	Level	2	-	3	-	4	5	6	7	8	9	-
	Cost	50K	-	250K	-	750K	1.5M	3.25M	5M	8M	11.5M	-
	Time	12h	-	1d	-	2d	3d	4d	5d	8d	12d	-
Giant	Level	-	2	-	3	4	5	6	7	8	9	10
	Cost	-	100K	-	250K	750K	2M	3.5M	5.5M	8.5M	11.5M	15M
	Time	-	12h	-	1.5d	2d	3d	5d	6d	10d	14d	15d
Goblin	Level	2	-	3	-	4	5	6	7	-	8	-
	Cost	50K	-	250K	-	750K	1.5M	3M	5.5M	-	10.5M	-
	Time	12h	-	1.5d	-	2d	3d	5d	7d	-	12d	-
Wall Breaker	Level	-	2	-	3	4	5	-	6	7	8	9
	Cost	-	100K	-	250K	750K	1.75M	-	5.5M	9M	12M	14M
	Time	-	12h	-	1.5d	2d	3d	-	5d	8d	14d	15d
Balloon	Level	-	2	-	3	4	5	6	-	7	8	9
	Cost	-	150K	-	450K	1.35M	2.5M	4.5M	-	9.5M	12M	14M
	Time	-	12h	-	1.5d	2d	3d	5d	-	10d	14d	16d
Wizard	Level	-	-	2	3	4	5	6	7	8	9	10
	Cost	-	-	150K	450K	1.35M	2.25M	4M	6M	9M	11M	15M
	Time	-	-	12h	1.5d	2d	3d	5d	6d	10d	14d	15d
Healer	Level	-	-	-	-	2	3	4	-	5	-	6
	Cost	-	-	-	-	750K	1.5M	3M	-	9.5M	-	14.5M
	Time	-	-	-	-	2d	3d	5d	-	14d	-	15d
Dragon	Level	-	-	-	-	2	3	4	5	6	7	8
	Cost	-	-	-	-	2M	2.75M	4.5M	6.5M	9M	11M	15M
	Time	-	-	-	-	4d	5d	6d	7d	10d	14d	16d
P.E.K.K.A	Level	-	-	-	-	-	2 / 3	4	5 / 6	7	8	9
	Cost	-	-	-	-	-	2.5M / 3M	4.5M	6M / 7M	9.5M	12M	15M
	Time	-	-	-	-	-	4d / 5d	6d	7d / 8d	10d	14d	15d
Baby Dragon	Level	-	-	-	-	-	-	2	3 / 4	5	6	7
	Cost	-	-	-	-	-	-	4M	5M / 6M	8M	9M	15M
	Time	-	-	-	-	-	-	5d	6d / 7d	10d	14d	15.5d
Miner	Level	-	-	-	-	-	-	-	2 / 3	4 / 5	6	7
	Cost	-	-	-	-	-	-	-	5.5M / 6.5M	8M / 9.5M	11M	14M
	Time	-	-	-	-	-	-	-	5.5d / 6.5d	8d / 11.5d	14d	15.5d
Electro Dragon	Level	-	-	-	-	-	-	-	-	2	3	4
	Cost	-	-	-	-	-	-	-	-	9M	11M	16M
	Time	-	-	-	-	-	-	-	-	10d	14d	16d
Yeti	Level	-	-	-	-	-	-	-	-	-	2	3
	Cost	-	-	-	-	-	-	-	-	-	11M	15M
	Time	-	-	-	-	-	-	-	-	-	14d	16d
Lightning Spell	Level	*2	*3	4	-	-	5	6	7	8	9	-
	Cost	*200K	*500K	1M	-	-	2M	4M	6M	8M	10M	-
	Time	*1d	*2d	3d	-	-	4d	6d	9d	11d	13d	-
Healing Spell	Level	-	*2	-	3	4	5	6	7	-	-	8
	Cost	-	*300K	-	600K	1.2M	2M	4M	6M	-	-	14M
	Time	-	*1d	-	2d	3d	4d	6d	10d	-	-	16d
Rage Spell	Level	-	-	*2	*3	4	5	-	-	-	6	-
	Cost	-	-	*450K	*900K	1.8M	3M	-	-	-	11M	-
	Time	-	-	*2d	*3d	4d	5d	-	-	-	11.5d	-
Jump Spell	Level	-	-	-	-	*2	-	-	3	-	-	4
	Cost	-	-	-	-	*3M	-	-	6M	-	-	13M
	Time	-	-	-	-	4d	-	-	7d	-	-	15d
Freeze Spell	Level	-	-	-	-	-	-	2	3 / 4 / 5	6	7	-
	Cost	-	-	-	-	-	-	3M	4M / 5M / 6M	9.5M	11M	-
	Time	-	-	-	-	-	-	3d	4.5d / 6.5d / 8d	9d	11.5d	-
Clone Spell	Level	-	-	-	-	-	-	-	2 / 3	4 / 5	-	6
	Cost	-	-	-	-	-	-	-	4M / 6M	8M / 10M	-	14M
	Time	-	-	-	-	-	-	-	4d / 5d	6.5d / 11.5d	-	15d
Invisibility Spell	Level	-	-	-	-	-	-	-	-	2	3	4
	Cost	-	-	-	-	-	-	-	-	9M	12M	15M
	Time	-	-	-	-	-	-	-	-	9d	11.5d	15.5d

Dark Elixir

Upgrade Chart		Laboratory Level
		5	6	7	8	9	10	11
Minion	Level	2	3 / 4	5	6	7	8	9
	Cost	10K	15K / 20K	30K	40K	90K	180K	250K
	Time	2d	2.5d / 3d	4d	5d	7.5d	14d	15.5d
Hog Rider	Level	2	3 / 4	5	6	7	8 / 9	10
	Cost	15K	20K / 25K	35K	50K	100K	180K / 240K	280K
	Time	2.5d	3d / 3.5d	4.5d	5.5d	8d	12d / 14d	16d
Valkyrie	Level	-	2	3 / 4	5	6	7	8
	Cost	-	25K	30K / 35K	60K	110K	190K	260K
	Time	-	3.5d	4d / 4.5d	6d	8.5d	14d	16d
Golem	Level	-	2	3 / 4	5	6 / 7	8 / 9	10
	Cost	-	30K	35K / 40K	70K	100K / 120K	180K / 220K	270K
	Time	-	3.5d	4d / 4.5d	6d	7.5d / 8d	12d / 14d	16d
Witch	Level	-	-	2	3	4	5	-
	Cost	-	-	50K	80K	130K	200K	-
	Time	-	-	5d	6.5d	9.5d	14d	-
Lava Hound	Level	-	-	2	3	4	5	6
	Cost	-	-	50K	70K	125K	200K	270K
	Time	-	-	5d	6.5d	9d	14d	16d
Bowler	Level	-	-	-	2	3	4	5
	Cost	-	-	-	90K	140K	200K	280K
	Time	-	-	-	7d	10d	14d	16d
Ice Golem	Level	-	-	-	-	2 / 3	4 / 5	-
	Cost	-	-	-	-	80K / 120K	160K / 200K	-
	Time	-	-	-	-	8d / 10d	12d / 14d	-
Headhunter	Level	-	-	-	-	-	2	3
	Cost	-	-	-	-	-	180K	240K
	Time	-	-	-	-	-	14d	16d
Poison Spell	Level	-	2	3	4	5	6	7
	Cost	-	25K	50K	75K	150K	200K	260K
	Time	-	2.5d	4d	6.5d	9.5d	11d	15.5d
Earthquake Spell	Level	-	2	3	4	5	-	-
	Cost	-	30K	60K	90K	120K	-	-
	Time	-	4d	5d	9d	11d	-	-
Haste Spell	Level	-	-	2	3 / 4	5	-	-
	Cost	-	-	40K	80K / 100K	120K	-	-
	Time	-	-	5d	6.5d / 9d	11d	-	-
Skeleton Spell	Level	-	-	-	2 / 3	4	5 / 6	7
	Cost	-	-	-	40K / 60K	100K	125K / 150K	250K
	Time	-	-	-	5d / 6.5d	8d	9d / 11d	15d
Bat Spell	Level	-	-	-	2 / 3	4	5	-
	Cost	-	-	-	60K / 80K	120K	160K	-
	Time	-	-	-	5d / 6.5d	8d	9d	-

Siege Machines

Upgrade Chart		Laboratory Level
		10	11
Wall Wrecker	Level	2 / 3	4
	Cost	6M / 8M	14M
	Time	8d / 10d	16d
Battle Blimp	Level	2 / 3	4
	Cost	6M / 8M	14M
	Time	8d / 10d	16d
Stone Slammer	Level	2 / 3	4
	Cost	6M / 8M	14M
	Time	8d / 10d	16d
Siege Barracks	Level	-	2 / 3 / 4
	Cost	-	8M / 11M / 14M
	Time	-	10d / 14d / 16d
Log Launcher	Level	-	2 / 3 / 4
	Cost	-	8M / 11M / 14M
	Time	-	10d / 14d / 16d