【Processing method: chemical plant】

[Note: Sulfuric acid is essential for making simple batteries]

【sulfuric acid】

Materials: [Sulfur] x 5, [Water] x 50

【Processing method: chemical plant】

[Note: Sulfuric acid can only be produced in chemical plants]

After looking at the drawings related to small batteries, Chen Wangping was helpless.

Just as he had thought before, even a small battery was not easy to build.

Chen Wangping analyzed: "Batteries need sulfuric acid, and sulfuric acid is made from sulfur. But sulfur mines haven't been discovered yet."

It seems that in addition to silicon mines, there is another sulfur mine to look for.

In addition, sulfuric acid and sulfur cannot be produced on the manufacturing bench, but require the use of chemical plants.

"The chemical plant must be a production technology blueprint. Judging from this, I may need to continue to upgrade to the third level of the production series technology before the chemical plant construction blueprint will appear."

Chen Wangping thought silently that the best way to use the blueprints at this stage was to find a way to get a few batteries that met the system requirements and use a few batteries first.

Upgrading the production series to the third-level technology requires five hundred first-level mechanical crystals, which is quite expensive.

Now you have to upgrade the second-level technology of the collection series before you can upgrade to the third-level technology of the production series.

Keep saving up!

Unable to build two blueprints in a row, he quickly clicked on the blueprints of the internal combustion engine and the first-level electric pole to check.

【internal combustion engine】

Materials: Iron Gears x 10, Iron Pipes x 5, Steel Plates x 2

【Processing method: manufacturing table】

【Note: Materials used to build vehicles】