Battery Diode

Battery Diode is a building that transfers stored power between two distinct power networks in Mindustry. When placed, it takes stored energy from the network behind it (the upstream network) and deposits that energy into the battery storages of the network it faces (the downstream network). The diode therefore allows one network to supply excess stored power to another without directly merging their real-time power flows.

Mechanically, the Battery Diode only moves stored energy, not instantaneous generation or consumption. Blocks in the downstream network may draw from the excess stored power delivered by the upstream network, but any immediate power usage or deficits in the upstream network are not affected by what happens downstream. This separation prevents a downstream shortage from slowing or throttling blocks that are part of the upstream network, preserving generator and production performance when a consumer network runs dry of extra stored energy.

The Battery Diode also blocks automatic power-network continuity across its tile; networks separated by a Battery Diode do not automatically combine as a single power network. If you need a full connection between the two sides, you must manually link them via configurable Power Node connections rather than relying on the diode to pass-through normal network behavior.

Practical usage and strategy:

• Use Battery Diodes to isolate generator-and-storage complexes from heavy consumer areas. Place generators and battery banks in the upstream network and defensive turrets or large consumers in the downstream network so turrets can draw on upstream stored energy without risking slowdown of the generators.
• The diode is ideal for preventing base-wide slowdowns when a portion of the base has a temporary spike in consumption; downstream depletion will not throttle upstream production.
• Battery Diodes only transfer stored energy; they do not route live output in the same way as direct network connections. Design your layouts so that stored-energy flows are sufficient for the expected downstream draws.
• If you need both separated storage sharing and full network integration, combine Battery Diodes with Power Nodes and manual configuration to selectively allow or deny connections.
• Positioning matters: the diode moves energy from the side behind it toward the side it faces, so orient it according to which network should provide excess storage and which should receive it.