Gateway Flux Battery

A Gateway Flux Battery stores gateway fuel beside a ring and keeps the Core topped up so bursty travel, Port, and Bridge transfers never run the gateway dry.

Crafting

Yields 2 batteries — a full array is many blocks, so the recipe is bulk-friendly.

Recipe ID: cesg:gateway_flux_battery

Behavior

Place beside a Gateway Frame or Core (or as part of an array that touches the ring)
Pump in Teleport Essence or Liquid Eye of Ender — the tank locks to the first fuel piped in (like a Create fluid tank) and rejects the other until emptied
The controller tops up the connected Core’s matching tank automatically (push-only; will not overfill past the Core cap)
Drain with a pump to reclaim fuel or swap types
An orphan array with no reachable Core simply holds its fuel

Multiblock arrays

Batteries assemble into a square-base array, Create fluid-tank style:

Footprint	Max height	Blocks
1×1	1	1
2×2	2	up to 8
3×3	3	up to 27

Capacity scales as block count × capacity per block (default 8000 mB per block; server-configurable)
A lone 1×1 does not stack vertically (max height = base width)
Pipe into any member — the shared tank fills
Breaking a member uses the existing array split/resize behavior; removing capacity can discard fuel. Drain arrays before dismantling them.
Growing an array preserves fuel already stored

One-click layer placer: click the top or bottom face of a formed 2×2 or 3×3 with enough batteries in hand to place a full W×W layer. Sneak-place still places one. An obstructed footprint places nothing extra beyond the single vanilla placement.

Fuel governor

The battery’s unique value beyond storage is a two-tier fuel priority:

Player / entity travel may draw fuel to empty — automation can never strand you
Port and Bridge transfers pause once combined fuel would fall below a protected reserve floor (default 1000 mB; server-configurable)

When the reserve would be breached, automation throttles while travel stays available.

Goggles

Goggles show stored fuel x/y mB. On a multi, also Array: WxWxH. Empty arrays still report capacity (Empty: 0/N mB) so you can read size while building.

Fuel-preserving pickup in 1.2.0

Sneak-right-click an isolated battery with a Create wrench to pick it up with its fuel. One unstackable item retains the fuel type and amount, shown in its tooltip. If your inventory is full, that item drops at the player.

Place a charged item away from other batteries. Placement transfers its fuel into one battery and consumes the item in survival and creative, preventing creative placement from copying stored fuel. Charged placement does not auto-fill array layers. Empty batteries retain their normal stacking and placement behavior.

Fueled array relocation remains deferred. Pickup refuses array controllers, members and adjacent batteries instead of copying a shared controller tank. Normal mining and explosions do not preserve fuel in drops. Drain an array before dismantling it. Recipes and fuel costs are unchanged.

Gateways Overview
Gateway Port
Cross-Dimensional Storage Bridge
End Cultivation — renewable pearl dust for crafting batteries

Ponder scenes cover single tanks and array formation.