# Battery - Stage 4 (technology) internal name `battery-mk04` · tier 7 (Production science pack, [tier 7](https://factorio.kalzumeus.com/tier/7.md)) HTML page: https://factorio.kalzumeus.com/tech/battery-mk04/ ## Cost 2500 units of (1 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 2 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 3 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 6 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 10 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 20 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 30 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 6 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 300 s each. ## Requires (3) - [Earnshaw's theorem](https://factorio.kalzumeus.com/tech/earnshaw-theorem.md) - [Fusion energy - Stage 1](https://factorio.kalzumeus.com/tech/fusion-mk01.md) - [Supercapacitor](https://factorio.kalzumeus.com/tech/supercapacitor.md) ## Leads to (2) - [Intermetallics - Stage 4](https://factorio.kalzumeus.com/tech/intermetallics-mk04.md) - [Photonics](https://factorio.kalzumeus.com/tech/photonics.md) ## Unlocks (10 recipes) ### 1D Photonic Crystal (`1d-photonic-crystal`) - 25 s · tier 7 · productivity modules allowed - Ingredients: 25 × [Photophore](https://factorio.kalzumeus.com/item/photophore.md), 1 × [YAG laser module](https://factorio.kalzumeus.com/item/yag-laser-module.md), 20 × [Graphene roll](https://factorio.kalzumeus.com/item/graphene-roll.md), 25 × [Silver plate](https://factorio.kalzumeus.com/item/silver-plate.md), 1000 × [Vacuum](https://factorio.kalzumeus.com/fluid/vacuum.md) - Results: 5 × [1D Photonic Crystal](https://factorio.kalzumeus.com/item/1d-photonic-crystal.md), 0.9 × [YAG laser module](https://factorio.kalzumeus.com/item/yag-laser-module.md) (90% chance) - Made in: Molecular assembler MK 01, Molecular assembler MK 02, Molecular assembler MK 03, Molecular assembler MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Lumogen F (`chemistry`) - 10 s · tier 7 - Ingredients: 1 × [Basolite C300](https://factorio.kalzumeus.com/item/flo.md), 100 × [Dichloromethane (DCM)](https://factorio.kalzumeus.com/fluid/dcm.md) - Results: 1 × [Lumogen F](https://factorio.kalzumeus.com/item/lfo.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Distributed Bragg Reflectors (`dbr`) - 20 s · tier 7 · productivity modules allowed - Ingredients: 5 × [Silica powder](https://factorio.kalzumeus.com/item/silica-powder.md), 6 × [1D Photonic Crystal](https://factorio.kalzumeus.com/item/1d-photonic-crystal.md), 100 × [Niobium complex](https://factorio.kalzumeus.com/fluid/niobium-complex.md), 200 × [Vacuum](https://factorio.kalzumeus.com/fluid/vacuum.md), 1 × [Nanocrystalline core](https://factorio.kalzumeus.com/item/nanocrystaline-core.md) - Results: 2 × [Distributed Bragg Reflectors](https://factorio.kalzumeus.com/item/dbr.md) - Made in: Nanomaterial factory MK 01, Nanomaterial factory MK 02, Nanomaterial factory MK 03, Nanomaterial factory MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Dichloromethane (DCM) (`dcm`) - 10 s · tier 7 - Ingredients: 50 × [Chlorine](https://factorio.kalzumeus.com/fluid/chlorine.md), 100 × [Chloromethane](https://factorio.kalzumeus.com/fluid/chloromethane.md), 100 × [Hot air](https://factorio.kalzumeus.com/fluid/hot-air.md) - Results: 50 × [Dichloromethane (DCM)](https://factorio.kalzumeus.com/fluid/dcm.md) - Made in: Fluidised bed reactor MK 01, Fluidised bed reactor MK 02, Fluidised bed reactor MK 03, Fluidised bed reactor MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Basolite C300 (`flo`) - 5 s · tier 7 · productivity modules allowed - Ingredients: 1 × [Glassware](https://factorio.kalzumeus.com/item/flask.md), 2 × [Chromium](https://factorio.kalzumeus.com/item/chromium.md), 4 × [Copper plate](https://factorio.kalzumeus.com/item/copper-plate.md), 100 × [Perylene](https://factorio.kalzumeus.com/fluid/perylene.md), 100 × [Cumene](https://factorio.kalzumeus.com/fluid/cumene.md) - Results: 1 × [Basolite C300](https://factorio.kalzumeus.com/item/flo.md) - Made in: Chemical plant, Chemical plant MK 01, Chemical plant MK 02, Chemical plant MK 03, Chemical plant MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Microcavity Core (`micro-cavity-core`) - 20 s · tier 7 · productivity modules allowed - Ingredients: 6 × [Super alloy](https://factorio.kalzumeus.com/item/super-alloy.md), 4 × [Biopolymer](https://factorio.kalzumeus.com/item/biopolymer.md), 3 × [Lumogen F](https://factorio.kalzumeus.com/item/lfo.md), 5 × [Nexelit matrix](https://factorio.kalzumeus.com/item/nexelit-matrix.md), 3 × [Nexelit antimony Alloy](https://factorio.kalzumeus.com/item/nxsb-alloy.md), 10 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 30 × [Deuterium](https://factorio.kalzumeus.com/fluid/deuterium.md), 5 × [Superconducting wire](https://factorio.kalzumeus.com/item/sc-wire.md), 3 × [Carbon nanotubes](https://factorio.kalzumeus.com/item/carbon-nanotube.md) - Results: 1 × [Microcavity Core](https://factorio.kalzumeus.com/item/micro-cavity-core.md) - Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Nanocrystalline core (`nanocrystaline-core`) - 10 s · tier 7 · productivity modules allowed - Ingredients: 5 × [Niobium plate](https://factorio.kalzumeus.com/item/niobium-plate.md), 10 × [Silicon](https://factorio.kalzumeus.com/item/silicon.md), 5 × [Iron plate](https://factorio.kalzumeus.com/item/iron-plate.md), 3 × [Boron](https://factorio.kalzumeus.com/item/boron.md), 5 × [Copper plate](https://factorio.kalzumeus.com/item/copper-plate.md), 2 × [Gold plate](https://factorio.kalzumeus.com/item/gold-plate.md) - Results: 1 × [Nanocrystalline core](https://factorio.kalzumeus.com/item/nanocrystaline-core.md) - Made in: Molecular assembler MK 01, Molecular assembler MK 02, Molecular assembler MK 03, Molecular assembler MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Organic solvent (`organi-solvent-pyae`) - 2 s · tier 7 - Ingredients: 100 × [Dichloromethane (DCM)](https://factorio.kalzumeus.com/fluid/dcm.md) - Results: 100 × [Organic solvent](https://factorio.kalzumeus.com/fluid/organic-solvent.md) - Made in: Chemical plant, Chemical plant MK 01, Chemical plant MK 02, Chemical plant MK 03, Chemical plant MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Spent Organic Quantum Battery (`quantum-battery`) - 20 s · tier 7 · productivity modules allowed - Ingredients: 5 × [Super alloy](https://factorio.kalzumeus.com/item/super-alloy.md), 5 × [Biopolymer](https://factorio.kalzumeus.com/item/biopolymer.md), 1 × [Cooling system](https://factorio.kalzumeus.com/item/cooling-system.md), 1 × [Supercapacitor](https://factorio.kalzumeus.com/item/supercapacitor.md), 4 × [Advanced coating](https://factorio.kalzumeus.com/item/science-coating.md), 1 × [Diamagnetic material](https://factorio.kalzumeus.com/item/diamagnetic-material.md), 4 × [Nanowires](https://factorio.kalzumeus.com/item/nano-wires.md), 10 × [Distributed Bragg Reflectors](https://factorio.kalzumeus.com/item/dbr.md), 2 × [Nano mesh](https://factorio.kalzumeus.com/item/nano-mesh.md), 1 × [Microcavity Core](https://factorio.kalzumeus.com/item/micro-cavity-core.md) - Results: 1 × [Spent Organic Quantum Battery](https://factorio.kalzumeus.com/item/used-quantum-battery.md) - Made in: Molecular assembler MK 01, Molecular assembler MK 02, Molecular assembler MK 03, Molecular assembler MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md) ### Quantum battery (`quantum-battery-recharge`) - 5 s · tier 7 - Ingredients: 1 × [Spent Organic Quantum Battery](https://factorio.kalzumeus.com/item/used-quantum-battery.md), 1 × [Thorium oxide](https://factorio.kalzumeus.com/item/th-oxide.md) - Results: 1 × [Quantum battery](https://factorio.kalzumeus.com/item/quantum-battery.md) - Made in: Particle accelerator MK 01, Particle accelerator MK 02, Particle accelerator MK 03, Particle accelerator MK 04 - Unlocked by: [Battery - Stage 4](https://factorio.kalzumeus.com/tech/battery-mk04.md)