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| Level 1 | Level 2 | Level 3 | Level 4 |
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| Level 5 | Level 6 | Level 7 | Level 8 | Level 9 |
- Summary
- The Laboratory is the facility where you go to upgrade your Troops and Spells. For a single research fee of Elixir or Dark Elixir, a chosen troop or spell's stats (health, damage, etc.) and cost will increase by a small amount.
- If you decide to upgrade your Laboratory while there's a research going on, it will continue the research progression. If you happen to be logged on when the lab upgrade completes, it may appear that the upgrade picks up where it left off. Log out and back on to see your troop upgrade progress reach its proper progress level.
- You cannot cancel the research while it is in progress, but you can immediately complete the upgrade (usually for a rather substantial amount of Gems).
- Laboratories emit a purple (level 1-6), blue (level 7), red (level 8) or yellow (level 9) glow from the entrances when upgrading troops or spells.
- You do not need an available builder to upgrade troops or spells.
- 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.
- Upgrade Differences
- Laboratories undergo significant visual changes at levels 2, 3, 6, 7, 8 and 9.
- 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 gold trim.
- At level 5, a second 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 door posts turn to a dark red color. It seems that red fluid is filling the left chamber. The dial also starts moving back and forth rapidly, showing that the vat may be overflowing. During a troop 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 are re-added to the top of the Laboratory, instead this time the rings are white rather than gold. The door post 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 10.
- Laboratories undergo significant visual changes at levels 2, 3, 6, 7, 8 and 9.
- 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 levelBarracks, Dark Barracks or 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.
- Heroes cannot be upgraded in the Laboratory.
- The conductor on top of the Lab 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 conductor on top of the level 7 Laboratory may be an imitation of the level 7 Hidden Tesla.
- The tubes on the either side of the level 7 lab seem to hold Dark Elixir.
- 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 everyTown Hall level starting from Town Hall 3 to Town Hall 11.
- 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 andHaste Spell in the Lab will produce more speed boosts, which justifies the word "faster".
- The Laboratory, the Town Hall and the Eagle Artillery are the only three buildings in the game to take up a 4x4 grid space.
- 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, 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, cancels the current upgrade and refunds half of the upgrade cost. 
Tapping this icon opens up the Laboratory interface, allowing you to upgrade your troops' levels. Town Hall Level 1 2 3 4 5 6 7 8 9 10 11 Number Available 0 0 1 1 1 1 1 1 1 1 1 Size 4x4 Level Hitpoints Build Cost 
Build Time Experience Gained 
Town Hall Level Required 1 500 25,000 30 minutes 42 3 2 550 50,000 5 hours 134 4 3 600 90,000 12 hours 207 5 4 650 270,000 1 day 293 6 5 700 500,000 2 days 415 7 6 750 1,000,000 4 days 587 8 7 830 2,500,000 5 days 657 9 8 950 4,000,000 6 days 720 10 9 1,070 6,000,000 7 days 777 11 Upgrade Chart
The following charts lists 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 4 allows you to upgrade your Giants to level 3 for 250,000 elixir and it takes 2 days. The top chart contains Elixir troop upgrades while the bottom chart containsDark 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 in italics indicate that although certain items can be upgraded in a low Laboratory level that can be unlocked at a low Town Hall level, they need a higher Town Hall level to be unlocked themselves, and therefore still require a higher Town Hall level to be upgraded. For example, upgrading theLightning Spell to level 2 requires Town Hall level 5 rather than level 3.Upgrade Chart Laboratory Level Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Level 7 Level 8 Level 9 Barbarian Level 2 - 3 - 4 5 6 7 - Cost 50,000 - 150,000 - 500,000 1,500,000 4,500,000 6,000,000 - Time 6 hours - 1 day - 3 days 5 days 10 days 14 days - Archer Level 2 - 3 - 4 5 6 7 - Cost 50,000 - 250,000 - 750,000 2,250,000 6,000,000 7,500,000 - Time 12 hours - 2 days - 3 days 5 days 10 days 14 days - Goblin Level 2 - 3 - 4 5 6 7 - Cost 50,000 - 250,000 - 700,000 2,250,000 4,500,000 6,750,000 - Time 12 hours - 2 days - 3 days 5 days 8 days 10 days - Giant Level - 2 - 3 4 5 6 7 8 Cost - 100,000 - 250,000 750,000 2,250,000 5,000,000 6,000,000 9,500,000 Time - 1 day - 2 days 3 days 5 days 10 days 12 days 14 days Wall Breaker Level - 2 - 3 4 5 - 6 - Cost - 100,000 - 250,000 750,000 2,250,000 - 6,750,000 - Time - 1 day - 2 days 3 days 5 days - 10 days - Balloon Level - 2 - 3 4 5 6 - 7 Cost - 150,000 - 450,000 1,350,000 2,500,000 6,000,000 - 9,500,000 Time - 1 day - 2 days 3 days 5 days 10 days - 14 days Wizard Level - - 2 3 4 5 6 7 - Cost - - 150,000 450,000 1,350,000 2,500,000 5,000,000 8,500,000 - Time - - 1 day 2 days 3 days 5 days 10 days 14 days - Healer Level - - - - 2 3 4 - - Cost - - - - 750,000 1,500,000 3,000,000 - - Time - - - - 3 days 5 days 7 days - - Dragon Level - - - - 2 3 4 5 6 Cost - - - - 2,000,000 3,000,000 5,000,000 7,000,000 9,000,000 Time - - - - 7 days 8 days 10 days 12 days 14 days P.E.K.K.A Level - - - - - 2 / 3 - 4 / 5 - Cost - - - - - 3,000,000 / 6,000,000 - 7,000,000 / 8,000,000 - Time - - - - - 10 days / 12 days - 14 days / 14 days - Baby Dragon Level - - - - - - 2 3 / 4 5 Cost - - - - - - 5,000,000 6,000,000 / 7,000,000 8,000,000 Time - - - - - - 8 days 10 days / 12 days 14 days Miner Level - - - - - - - 2 3 / 4 Cost - - - - - - - 7,500,000 8,500,000 / 9,500,000 Time - - - - - - - 10 days 12 days / 14 days Lightning Spell Level 2 3 4 - - 5 6 7 - Cost 200,000 500,000 1,000,000 - - 2,000,000 6,000,000 8,000,000 - Time 1 day 2 days 3 days - - 4 days 10 days 14 days - Healing Spell Level - 2 - 3 4 5 6 - - Cost - 300,000 - 600,000 1,200,000 2,400,000 4,800,000 - - Time - 1 day - 2 days 3 days 5 days 7 days - - Rage Spell Level - - 2 3 4 5 - - - Cost - - 450,000 900,000 1,800,000 3,000,000 - - - Time - - 2 days 3 days 5 days 7 days - - - Jump Spell Level - - - - 2 - - 3 - Cost - - - - 3,000,000 - - 6,000,000 - Time - - - - 5 days - - 7 days - Freeze Spell Level - - - - - - - 2 / 3 / 4 / 5 - Cost - - - - - - - 4,000,000 / 5,000,000 / 6,500,000 / 8,000,000 - Time - - - - - - - 5 days / 7 days / 10 days / 14 days - Clone Spell Level - - - - - - - 2 3 / 4 Cost - - - - - - - 5,000,000 7,000,000 / 9,000,000 Time - - - - - - - 8 days 10 days / 14 days Upgrade Chart Laboratory Level Level 5 Level 6 Level 7 Level 8 Level 9 Minion Level 2 3 / 4 5 6 7 Cost 10,000 20,000 / 30,000 40,000 100,000 140,000 Time 5 days 6 days / 7 days 10 days 12 days 14 days Hog Rider Level 2 3 / 4 5 6 - Cost 20,000 30,000 / 40,000 50,000 100,000 - Time 8 days 10 days / 11 days 12 days 14 days - Valkyrie Level - 2 3 / 4 5 - Cost - 50,000 60,000 / 70,000 110,000 - Time - 8 days 10 days / 12 days 14 days - Golem Level - 2 3 / 4 5 - Cost - 60,000 70,000 / 80,000 90,000 - Time - 10 days 12 days / 14 days 14 days - Witch Level - - 2 - 3 Cost - - 75,000 - 160,000 Time - - 10 days - 14 days Lava Hound Level - - 2 3 4 Cost - - 60,000 70,000 150,000 Time - - 10 days 12 days 14 days Bowler Level - - - 2 3 Cost - - - 120,000 200,000 Time - - - 10 days 14 days Poison Spell Level - 2 3 4 - Cost - 25,000 50,000 75,000 - Time - 4 days 6 days 10 days - Earthquake Spell Level - 2 3 4 - Cost - 30,000 60,000 90,000 - Time - 6 days 8 days 12 days - Haste Spell Level - - 2 3 / 4 - Cost - - 40,000 80,000 / 100,000 - Time - - 8 days 10 days / 14 days - Skeleton Spell Level - - - 2 / 3 4 Cost - - - 50,000 / 75,000 100,000 Time - - - 8 days / 10 days 12 days
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