The Battery Bank was added to 7 Days to Die in A16 and allows you to power electrical components. It requires at least one battery, but can be expanded. Battery Banks are more effective when paired with a Solar Bank, which can recharge the batteries using solar power.
Battery Banks in 7 Days to Die play an important role in generating completely self-sufficient electrical circuits that make it easy to run the electrical components in your base. These systems are incredibly helpful, but obtaining Battery Banks isn’t as simple as just finding one in the wild. It isn’t immediately clear how to use them, either, as prepping Battery Banks for prolonged use isn’t as straightforward as hooking it up with cables.