Medium Battery

The Medium Battery is a power-storage item used to buffer electrical networks in Astroneer. It stores excess generated power and releases that stored energy whenever a network is not producing enough power to meet demand, making it useful for keeping bases and vehicles running through short production gaps or during peak draw.

Its charge display has 16 visible columns, with each column equivalent to 32 Units. Like the smaller batteries, it fills when production exceeds consumption and empties when power is needed elsewhere on the network. Because of its size and capacity, it is generally more efficient than relying on multiple Small Batteries when available space is limited.

A few practical notes are worth keeping in mind:

• Traveling between planets can cause the yellow charge bars to shift off-center on the battery model. The moved bars do not affect collisions, but they can distort the outline when hovering over the item. Repacking and unpacking the battery, or resetting the game, normally fixes the issue.
• The battery model lacks visible horizontal lines for the individual bars, which can make its charge state slightly harder to read at a glance.
• Medium Batteries were once found rarely deep in caves at the ends of tunnels. They can also be found at the back of Field Shelters.
• In older versions, the item was occasionally used as a hidden or uncommon find rather than only as a crafted power component.

The Medium Battery is part of the broader power progression in the game, sitting between compact, low-capacity storage and larger grid-scale power solutions. It is especially valuable for automated setups, longer vehicle trips, and bases that experience intermittent generation from solar, wind, or other variable sources.