HC Valley Batteries are an important mid to late game resource in Arknights Endfield. They are mainly used to power advanced facilities, unlock higher tier crafting chains, and maintain energy hungry production lines. As you move deeper into the open world regions and start building efficient bases, these batteries become less of a luxury and more of a requirement. Understanding how to craft them early can save time, reduce resource waste, and improve overall progression.

Before crafting, it helps to know why these batteries matter. HC Valley Batteries function as a high capacity energy unit within the Endfield infrastructure system. They are commonly required for:

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  Powering advanced industrial buildings

  
  


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  Upgrading automated production modules

  
  


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  Maintaining long running extraction units

  
  


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  Fulfilling certain research and mission objectives

  
  

Because they are not easily obtained from enemies or exploration, crafting becomes the most reliable way to secure a steady supply.

Unlocking The Crafting Recipe

You cannot craft HC Valley Batteries immediately. The recipe unlocks only after meeting specific progression conditions. These usually involve a mix of story advancement, base development, and research completion. To unlock the recipe, you should focus on:

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  Advancing the main story until industrial crafting becomes available

  
  


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  Upgrading your base control center to the required tier

  
  


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  Completing energy research nodes in the tech tree

  
  

Once these steps are done, the HC Valley Battery recipe appears in the advanced crafting menu.

Required Materials For Crafting

Crafting HC Valley Batteries requires several refined materials rather than raw resources. This encourages players to build a complete production chain instead of skipping steps. While exact quantities may vary depending on upgrades, the typical materials include:

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  Refined metal components produced from ore processing

  
  


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  Energy cores generated by power focused facilities

  
  


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  Synthetic polymers crafted from chemical plants

  
  


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  Auxiliary connectors created through mechanical assembly

  
  

Each material must be crafted beforehand, making preparation just as important as the final crafting step.

Setting Up An Efficient Production Chain

Efficiency matters a lot when crafting HC Valley Batteries. Without proper planning, production can stall or drain other important resources. To avoid this, set up a dedicated production chain. A good setup includes:

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  Separate facilities for raw material processing

  
  


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  Continuous energy generation to avoid downtime

  
  


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  Storage buffers to handle material overflow

  
  


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  Automated transport routes between buildings

  
  

This setup ensures that battery crafting runs smoothly without interrupting other base operations.

Crafting Process Step By Step

Once all materials are ready, the actual crafting process is simple but time sensitive. Follow these steps carefully:

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  Open the advanced crafting interface

  
  


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  Select HC Valley Battery from the energy category

  
  


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  Confirm that all required materials are available

  
  


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  Assign the crafting task and monitor power usage

  
  

Crafting takes time and consumes a noticeable amount of energy, so avoid starting the process during peak base activity.

Common Mistakes To Avoid

Many players struggle with battery crafting because of small but costly mistakes. Being aware of them can save hours of rebuilding. Common mistakes include:

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  Starting crafting without enough stored energy

  
  


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  Ignoring material bottlenecks in earlier stages

  
  


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  Overloading power grids with multiple heavy tasks

  
  


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  Forgetting to upgrade production facilities

  
  

Fixing these issues early makes HC Valley Battery crafting far more manageable.

Tips For Faster And Cheaper Crafting

There are ways to reduce the overall cost and time required. Smart planning and upgrades go a long way. Consider the following tips:

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  Prioritize energy efficiency research upgrades

  
  


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  Use operators or units with crafting bonuses

  
  


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  Craft batteries during low activity periods

  
  


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  Stockpile refined materials in advance

  
  

These small optimizations add up, especially when crafting batteries in bulk.

When To Start Crafting In Your Progression

Timing matters when it comes to HC Valley Batteries. Crafting them too early can slow growth, while crafting too late can block upgrades. The best moment is after stabilizing energy income and unlocking automation. At this stage, your base can support continuous crafting without strain. Focus on producing a small batch first instead of mass crafting. This helps you test efficiency and adjust layouts. Once systems are stable, scale up production confidently and integrate batteries into long term planning without fear of shortages. This balanced approach keeps progress smooth and prevents unnecessary rebuilds or wasted resources.