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Battery Chassis

The Battery Chassis is a placed energy bank that holds Battery Cells. The cells provide the storage and decide how fast FE goes in and out. The chassis decides how many cells fit and adds its own behavior on top, such as balancing charge across cells or sealing in leakage.

Each chassis you craft rolls its own rarity and affixes. Battery Chassis do not have Machine Mastery.

You can read a chassis from the outside. Each active cell slot is a socket on the floor of the rack, and every installed cell stands in its socket, so you can see which cells are in and which slots are empty. The window on each cell fills up with that cell's charge. The lights on the corner posts show the whole bank's charge, the bottom two warning orange and red. While the bank charges, the light above the charge blinks and the lamps on the lid glow green; while it discharges, the top light pulses and the lamps glow amber. Teal lamps mean FE passes through in about equal amounts, and dark lamps mean nothing is moving. The bus rails under the lid and the straps over the cells are in the chassis's metal.

Each side, top and bottom included, shows what it touches. A side facing a cable connector or a Universal Connector shows a connector port. A side against another FE block, such as a machine or another chassis, is closed with a solid, smooth contact wall. A side with nothing attached stays open, or plain on the lid and base. The Wooden Battery Chassis is a plain plank crate instead: its cells sit in the crate, wired to a copper bar, and its redstone lamp glows while FE flows in or out. Slow leakage alone does not light it.

Obtaining

Crafting

Each stage has its own recipe built around a Machine Frame. You do not need the previous chassis to craft the next one.

IngredientsCrafting recipeNotes
Wooden Battery Chassis
Oak Planks +
Bus Bar +
Machine Frame +
Redstone Dust		Oak PlanksBus BarOak PlanksBus BarMachine FrameBus BarOak PlanksRedstone DustOak PlanksWooden Battery Chassis
Iron Battery Chassis
Bus Bar +
Iron Ingot +
Machine Frame +
Redstone Dust		Bus BarIron IngotBus BarIron IngotMachine FrameIron IngotBus BarRedstone DustBus BarIron Battery ChassisRequires the Iron material to be enabled.
Copper Battery Chassis
Bus Bar +
Copper Ingot +
Machine Frame +
Redstone Dust		Bus BarCopper IngotBus BarCopper IngotMachine FrameCopper IngotBus BarRedstone DustBus BarCopper Battery ChassisRequires the Copper material to be enabled.
Gold Battery Chassis
Bus Bar +
Machine Frame +
Gold Ingot +
Calibrated Storage Component +
Redstone Dust		Bus BarMachine FrameBus BarGold IngotCalibrated Storage ComponentGold IngotBus BarRedstone DustBus BarGold Battery ChassisCalibrated Storage Component must be a Storage calibration, Stage 2+, stability 45+.
Requires the Gold material to be enabled.
Steel Battery Chassis
Bus Bar +
Reinforced Machine Frame +
Steel Ingot +
Calibrated Storage Component +
Redstone Dust		Bus BarReinforced Machine FrameBus BarSteel IngotCalibrated Storage ComponentSteel IngotBus BarRedstone DustBus BarSteel Battery ChassisCalibrated Storage Component must be a Storage calibration, Stage 2+, stability 55+.
Requires the Steel material to be enabled.
Sparksteel Battery Chassis
Bus Bar +
Advanced Machine Frame +
Sparksteel Ingot +
Calibrated Storage Component +
Redstone Dust		Bus BarAdvanced Machine FrameBus BarSparksteel IngotCalibrated Storage ComponentSparksteel IngotBus BarRedstone DustBus BarSparksteel Battery ChassisCalibrated Storage Component must be a Storage calibration, Stage 2+, stability 60+.
Requires the Sparksteel material to be enabled.
Arclite Battery Chassis
Bus Bar +
Advanced Machine Frame +
Arclite Ingot +
Calibrated Storage Component +
Redstone Dust		Bus BarAdvanced Machine FrameBus BarArclite IngotCalibrated Storage ComponentArclite IngotBus BarRedstone DustBus BarArclite Battery ChassisCalibrated Storage Component must be a Storage calibration, Stage 2+, stability 70+.
Requires the Arclite material to be enabled.
Nullite Battery Chassis
Bus Bar +
Exotic Machine Frame +
Nullite Ingot +
Calibrated Storage Component +
Redstone Dust		Bus BarExotic Machine FrameBus BarNullite IngotCalibrated Storage ComponentNullite IngotBus BarRedstone DustBus BarNullite Battery ChassisCalibrated Storage Component must be a Storage calibration, Stage 2+, stability 80+.
Requires the Nullite material to be enabled.
Aethergold Battery Chassis
Bus Bar +
Exotic Machine Frame +
Aethergold Ingot +
Calibrated Storage Component +
Redstone Dust		Bus BarExotic Machine FrameBus BarAethergold IngotCalibrated Storage ComponentAethergold IngotBus BarRedstone DustBus BarAethergold Battery ChassisCalibrated Storage Component must be a Storage calibration, Stage 2+, stability 90+.
Requires the Aethergold material to be enabled.
Exotic Battery Chassis
Bus Bar +
Exotic Machine Frame +
Naquadah Ingot +
Calibrated Storage Component +
Redstone Dust		Bus BarExotic Machine FrameBus BarNaquadah IngotCalibrated Storage ComponentNaquadah IngotBus BarRedstone DustBus BarExotic Battery ChassisCalibrated Storage Component must be a Storage calibration, Stage 2+, stability 85+.

Breaking

Mine a placed chassis with a pickaxe. It drops itself and keeps its rolled traits. Installed cells drop as separate items and keep their own FE, rarity, and affixes, but lose any bonus capacity the chassis was giving them.

Usage

Storing power

Put Battery Cells in the chassis, then connect it to generators and machines directly or with a Universal Cable. The chassis accepts FE from any side and pushes stored FE out to adjacent blocks that accept it. It does not push FE back into a side that fed it on the same tick.

  • Capacity is the total of the installed cells, multiplied by the chassis's capacity affixes. That bonus only applies while the cells stay in this chassis.
  • Input and output speed come from the installed cells. Their combined charge and discharge rates are the limit, not the chassis, so a big chassis full of weak cells is still slow. These rates are per tick and shared by every side and connector, so adding sides or connectors does not raise them. An attached Universal Cable connector can cap it lower; while it runs at its cap and the cells could move more, the readout shows Attached connector limits input energy or Attached connector limits output energy.
  • Idle loss slowly drains stored FE. Cells leak on their own, and some chassis add or remove leakage.
  • Efficiency below 1.0 wastes FE: the chassis stores less than it accepts and draws more from its cells than it delivers. The Wooden, Copper, Gold, and Arclite chassis start below 1.0, and Efficiency affixes can raise it. Efficiency above 1.0 gives no bonus.

Two Battery Chassis placed directly next to each other slowly even out their fill levels. Banks on the same cable network with connectors on Both also even out their charge and then stop, instead of draining each other, so daisy-chained banks pass charge along. See storage balancing.

Stages

Stage Chassis Cell slots Notes
0 Wooden Battery Chassis 1 Novelty holder. Poor efficiency and stability, and it leaks.
1 Iron Battery Chassis 1 Simple and reliable, with no leakage. Strong per-cell bonuses.
2 Copper Battery Chassis 2 Better transfer rating with light leakage.
3 Gold Battery Chassis 3 Large burst identity, but less stable and leakier.
4 Steel Battery Chassis 4 Stable, no chassis leakage, and cuts each installed cell's own leakage by 0.02%/min.
5 Sparksteel Battery Chassis 5 Charge Balancer.
6 Arclite Battery Chassis 6 High transfer rating with Charge Balancer.
7 Nullite Battery Chassis 8 Late-game bank with Charge Balancer.
7 Aethergold Battery Chassis 6 Charge Balancer. Seals installed cells so they do not leak at all. Strongest burst identity.
8 Exotic Battery Chassis 10 Charge Balancer. Largest, most stable bank, with weaker per-cell bonuses.

More slots is not always better. Low-slot chassis apply their affixes more strongly to each cell, so a focused Iron or Copper chassis can still be worth keeping.

Charge Balancer spreads charging, discharging, and leakage evenly across all installed cells instead of filling or draining one at a time. Chassis without it can roll the Balance Mode prefix for the same effect. See Balance Mode. Balancing still respects each cell's own rates, stored FE, and free space: when one cell cannot take or give its share, the others cover it. It does not change capacity or transfer rate.

The Copper and Gold chassis, and every chassis from Sparksteel up, carry a burst identity. It does not raise output above what the cells can deliver.

Gear

The Gear tab holds the Battery Cells. Any Battery Cell fits, one per slot. The Additional Battery Slots prefix can unlock up to four more slots, and the Charged Storage prefix doubles capacity after the chassis has held energy continuously for 10 minutes. If the bank runs empty, that timer starts over.

Automation

Side Behavior
Any Accepts and exports FE.
Any Inserts and extracts Battery Cells, for example with a hopper or item connector.

The chassis is not general item storage: it only holds Battery Cells.

Screen

The Battery Chassis screen has four tabs:

  • Process: stored FE, the chassis transfer rating, the cells' combined input and output rates, any attached connector cap, and last-tick transfer. Hover for exact values.
  • Gear: the Battery Cell slots.
  • Stats: the chassis's current stats, including traits.
  • Refinement: refine the placed chassis's traits with a catalyst.

Data values

NameResource locationFormTranslation key
Wooden Battery Chassisrngtech:wooden_battery_chassisBlockblock.rngtech.wooden_battery_chassis
Iron Battery Chassisrngtech:iron_battery_chassisBlockblock.rngtech.iron_battery_chassis
Copper Battery Chassisrngtech:copper_battery_chassisBlockblock.rngtech.copper_battery_chassis
Gold Battery Chassisrngtech:gold_battery_chassisBlockblock.rngtech.gold_battery_chassis
Steel Battery Chassisrngtech:steel_battery_chassisBlockblock.rngtech.steel_battery_chassis
Sparksteel Battery Chassisrngtech:sparksteel_battery_chassisBlockblock.rngtech.sparksteel_battery_chassis
Arclite Battery Chassisrngtech:arclite_battery_chassisBlockblock.rngtech.arclite_battery_chassis
Nullite Battery Chassisrngtech:nullite_battery_chassisBlockblock.rngtech.nullite_battery_chassis
Aethergold Battery Chassisrngtech:aethergold_battery_chassisBlockblock.rngtech.aethergold_battery_chassis
Exotic Battery Chassisrngtech:exotic_battery_chassisBlockblock.rngtech.exotic_battery_chassis

See also

RNGTech wiki
GuidesAutomation · Battery Cells · Dormant Machines · Gear · Getting Started · Heat · Machine Mastery · Machine Stats · Modpack Creators · Power Chains · Rarity and Affixes · Stages · Uniques
ProcessingAlloy Furnace · Component Assembler · Component Recycler · Crusher · Furnace · Melter · Metal Press · Resonance Calibrator · Wooden Composter
Power generationBio Generator · Cavitation Generator · Corrosion Cell · Fuel Cell · Potential Reactor · Solar Panel · Solid Fuel Burner · Syngas Combustor · Vacuum Collapse Generator
Energy storageBattery Chassis
Fluids and gasesAlgae Photobioreactor · Ammonia Synthesizer · Coal Gasifier · Fluid and Compressor Tanks · Silica Gel Dehumidifier · Steam Methane Reformer · Wooden Dehumidifier
RefinementAffix Forge · Exotic Affix Forge
LogisticsUniversal Cable
ToolsForestry Cart Station · Miner's Companion · Modular Tools · Tool Bench