# Follower robot count (technology)

internal name `follower-robot-count-4` · tier 9 (Utility science pack, [tier 9](https://factorio.kalzumeus.com/tier/9.md)) · upgrade
HTML page: https://factorio.kalzumeus.com/tech/follower-robot-count-4/

## Cost

3300 units of (1 × [Utility science pack](https://factorio.kalzumeus.com/item/utility-science-pack.md), 2 × [pY science pack 4](https://factorio.kalzumeus.com/item/py-science-pack-4.md), 3 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 6 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 10 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 20 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 30 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 60 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 100 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 20 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 600 s each.

## Requires (3)

- [Destroyer](https://factorio.kalzumeus.com/tech/destroyer.md)
- [Follower robot count](https://factorio.kalzumeus.com/tech/follower-robot-count-3.md)
- [Utility science pack](https://factorio.kalzumeus.com/tech/utility-science-pack.md)

## Leads to (1)

- [Follower robot count](https://factorio.kalzumeus.com/tech/follower-robot-count-5.md)

## Unlocks (0 recipes)

Other effects: maximum-following-robots-count

None.