Hello and thank you for your work! Even though I understand that batteries have Energy Capacity, I don't understand why the starting Additional Toolbelt, Armor Pocket, Artificial Organs and Portable Computers also have this. What does it mean? Does Energy Capacity of 100 kj mean that this item consumes 100 kj every second or what?
The reason for designating the item type as a battery is to address the scope of the supporting API. And for the balance of your equipment, you have a marked consumption rate as you say.