Hidden Tesla is one of the most popular defenses in Clash of Clans.
Currently, there are 16 levels available for this defense.
As a result, it is quite common for players to get confused about the upgrade cost of the Hidden Tesla and the corresponding upgrade time.
To solve that issue, I've written this article.
In this article, I've listed the upgrade cost and upgrade time of Hidden Tesla in Clash of Clans.
I've done all the math required so that you don't have to!
So, without any further ado, let's dive right into it!
Hidden Tesla Upgrade Cost and Upgrade Time in Clash of Clans
I've organized the entire data in a table.
Moreover, to make sure that everything is easy to read and understand, I've also written the data in text in an organized manner.
The following table displays the upgrade cost and corresponding upgrade time of Hidden Tesla in the game:
| Hidden Tesla level | Upgrade Cost (gold) | Upgrade Time |
|---|---|---|
| 1 | 250,000 | 2 hours |
| 1 to 2 | 350,000 | 3 hours |
| 2 to 3 | 500,000 | 4 hours |
| 3 to 4 | 600,000 | 6 hours |
| 4 to 5 | 800,000 | 12 hours |
| 5 to 6 | 1,200,000 | 1 day |
| 6 to 7 | 1,400,000 | 1 day 6 hours |
| 7 to 8 | 1,600,000 | 1 day 12 hours |
| 8 to 9 | 2,100,000 | 1 day 18 hours |
| 9 to 10 | 3,000,000 | 2 days |
| 10 to 11 | 3,100,000 | 2 days 12 hours |
| 11 to 12 | 3,700,000 | 3 days |
| 12 to 13 | 5,100,000 | 4 days |
| 13 to 14 | 6,500,000 | 5 days |
| 14 to 15 | 8,200,000 | 6 days |
| 15 to 16 | 20,500,000 | 15 days |
The data in the above table can be interpreted as:
- You'll require 250,000 gold to build a level 1 Hidden Tesla. It will be built in 2 hours.
- To upgrade a level 1 Hidden Tesla to level 2, you'll require 350,000 gold. The upgrade gets completed in 3 hours.
- Upgrading a level 2 Hidden Tesla to level 3 requires 500,000 gold. And, the upgrade takes 4 hours to complete.
- To upgrade a level 3 Hidden Tesla to level 4, you'll require 600,000 gold. The upgrade takes 6 hours to complete.
- Upgrading a level 4 Hidden Tesla to level 5 requires 800,000 gold and the upgrade will get completed in 12 hours.
- To upgrade a level 5 Hidden Tesla to level 6, you need 1,200,000 gold and the upgrade will get completed in 1 day.
- Upgrading a level 6 Hidden Tesla to level 7 requires 1,400,000 gold and the upgrade takes 1 day 6 hours to complete.
- To upgrade a level 7 Hidden Tesla to level 8, you need 1,600,000 gold. And, the upgrade will take 1 day 12 hours to complete.
- To upgrade a level 8 Hidden Tesla to level 9, you require 2,100,000 gold and the upgrade will get completed in 1 day 18 hours.
- Upgrading a level 9 Hidden Tesla to level 10 requires 3,000,000 gold and the upgrade gets completed in 2 days.
- To upgrade a level 10 Hidden Tesla to level 11, you require 3,100,000 gold. And, the upgrade will get completed in 2 days 12 hours.
- Upgrading a level 11 Hidden Tesla to level 12 requires 3,700,000 gold. The upgrade gets completed in 3 days.
- To upgrade a level 12 Hidden Tesla to level 13, you'll require 5,100,000 gold. The upgrade will get completed in 4 days.
- Upgrading Hidden Tesla from level 13 to 14 requires 6,500,000 gold and 5 days time!
- To upgrade Hidden Tesla from level 14 to 15, you require 8,200,000 gold and 6 days time.
- To max out your Hidden Tesla by upgrading from level 15 to 16, you will require 20,500,000 gold and 15 days of time!
Conclusion
In this article, I've listed the upgrade cost of Hidden Tesla along with the upgrade time.
I'll also update the data in this article if any numbers change in the game in the future.
Also, please note: I've updated the data in this post. The entire data in this post is up-to-date as of 3 September 2025.
To quickly max out the Hidden Teslas in your base, you can use farming attack strategies to arrange for the gold required for the upgrades.
Now, I'd like to hear from you:
Have you already maxed out all the Hidden Teslas in your base? If not, what are the current levels of the Hidden Teslas?
Or, you might have a question.
Either way, feel free to let me know by dropping down a comment below!
I've also written an article in which I've listed the upgrade cost and upgrade time of Eagle Artillery in Clash of Clans. You can read it here.
Cheers,
Raj Oberoi