Updated for Town Hall 18 (October 2026).
The Builder Base Elixir Collector pumps out Builder Elixir around the clock, from 1,000 an hour at level 1 to 4,500 an hour at level 10. Every level fills in exactly 24 hours, so one tap a day loses you nothing. You start with one, get a second at Builder Hall 6 and a third at Builder Hall 8, and three maxed collectors make 324,000 Builder Elixir a day.
How the Elixir Collector works
The collector draws Builder Elixir from an endless underground supply and holds it until you tap the building. Its capacity is always 24 hours of output, a rule that has applied since an October 2019 update doubled the old 12-hour capacity. Once it is full, it stops until you collect.
Collecting moves the Elixir into your Builder Base Elixir Storage. When you start an upgrade, anything sitting in the collector is collected automatically, and production pauses until the upgrade finishes. Upgrades are paid in Builder Gold. Attackers can’t steal from it, since Builder Base battles never take loot from the defender.
The Clock Tower boost speeds collectors up along with every other timer in the Builder Base. A level 10 Clock Tower boost is worth 4 hours 48 minutes of production, or about 64,800 extra Builder Elixir across three max collectors.
How many Elixir Collectors you get
Your first collector is one of the ruined buildings already standing when you arrive in the Builder Base. It is repaired automatically during the tutorial, when the Builder Hall reaches level 2.
| Builder Hall | Collectors | On Stage 1 | On Stage 2 |
|---|---|---|---|
| 1 to 5 | 1 | 1 | None (no Stage 2 yet) |
| 6 to 7 | 2 | 1 | 1 |
| 8 to 10 | 3 | 1 | 2 |
The second collector comes with Stage 2: when it opens at Builder Hall 6, it already contains a level 1 collector alongside its own Gold Mine and storages.
Elixir Collector levels and stats
Costs are in Builder Gold. Times are base values before any Gold Pass builder discount.
| Level | Builder Hall needed | Builder Elixir per hour | Capacity | Hitpoints | Cost (Builder Gold) | Upgrade time |
|---|---|---|---|---|---|---|
| 1 | 1 | 1,000 | 24,000 | 300 | 1,000 | 10m |
| 2 | 3 | 1,200 | 28,800 | 350 | 5,000 | 20m |
| 3 | 3 | 1,500 | 36,000 | 400 | 10,000 | 40m |
| 4 | 4 | 1,800 | 43,200 | 460 | 30,000 | 2h |
| 5 | 5 | 2,100 | 50,400 | 550 | 60,000 | 6h |
| 6 | 6 | 2,500 | 60,000 | 650 | 100,000 | 1d |
| 7 | 7 | 3,000 | 72,000 | 750 | 200,000 | 1d 12h |
| 8 | 8 | 3,500 | 84,000 | 850 | 300,000 | 2d |
| 9 | 9 | 4,000 | 96,000 | 1,000 | 400,000 | 2d 12h |
| 10 | 10 | 4,500 | 108,000 | 1,150 | 800,000 | 3d |
Are collector upgrades worth it?
In the old Builder Base, collectors were a big part of your income because Versus Battle loot was capped by a three-win daily bonus. In Builder Base 2.0, defenses feed your Elixir Cart all day, and Supercell raised Builder Base battle rewards for almost every league in March 2025. Collectors are now a side income, so judge each upgrade by how long it takes to earn back the production it costs.
- Levels 2 to 5 are cheap and earn back their lost production within two days. Level 6 takes about five days. Do them whenever a builder is free.
- Level 9 to 10: three days offline costs you 288,000 Builder Elixir at 4,000 an hour, and you gain only 500 an hour back, so it takes about 24 days to come out ahead.
With an extra Builder Base builder available since May 2026, the cheapest approach is to drop collector upgrades into gaps between defense and Star Laboratory work rather than letting them hold up anything important.
Placing your collectors
A collector is a 3×3 building with low hitpoints for its size (1,150 at max). It does nothing on defense, so put it where it costs the attacker time: outside your walls on the side opposite your Builder Hall, or along the route ground troops take toward a Crusher, so they stop to hit it inside its range. On Stage 2 you can split the two collectors to opposite edges so a Power P.E.K.K.A or Battle Machine has farther to walk for the last few percent.
What changed with Builder Base 2.0
Builder Base 2.0 (May 15, 2023) added Builder Hall 10 and with it collector level 10. It also gave Stage 2 its own collectors: the patch notes list one among the buildings that appear when Stage 2 opens. The way you earn Builder Elixir changed more than the collector did, with defenses and the Elixir Cart now doing most of the work.
Elixir Collector FAQ
How many Elixir Collectors can you have in the Builder Base?
Up to three, from Builder Hall 8. One stays on Stage 1 and two go on Stage 2.
How much Builder Elixir does a max collector make?
4,500 an hour, or 108,000 a day, which is also its full capacity.
Does the Elixir Collector make Elixir while upgrading?
No. It collects what it held when you start the upgrade, then produces nothing until it finishes.
Sources: Supercell, Builder Base 2.0 patch notes (May 15, 2023); Supercell, Clash Anytime update notes (March 2025); Supercell, May 2026 update notes; in-game data.
