# Battery (ESS) dashboard

> The Battery dashboard in the Voltmasters EMS: state of charge, daily cycles, available energy and the charge and discharge profile per battery.

Source: https://voltmasters.io/en/docs/voltmasters-platform/dashboards/battery-ess-dashboard/

The **Battery** dashboard displays the state and performance of the energy storage system.

> **Note**
>
> In the top-right corner, you can choose your preferred view: each battery separately or all batteries combined.

### What this dashboard shows

-   **State of charge (SOC)** gauge and bars indicating charge and discharge energy, daily cycles, and available energy.
-   **Battery traffic**: stacked bar chart showing charging and discharging power, with a line representing SOC.
-   **Component details**: each battery module, such as CBMS1 and CBMS2, with SOC, status, dischargeable energy, current, voltage, and temperature. The DC converter section shows inverter power, voltage, and current.

![Voltmasters EMS: ESS dashboard](https://voltmasters.io/assets/docs/image-73.webp)

*Voltmasters EMS: ESS dashboard*

### Battery details

When you click the battery details, you can view module-specific data such as temperature, voltage, and current.

![Voltmasters EMS: battery rack detail](https://voltmasters.io/assets/docs/image-39.webp)

*Voltmasters EMS: battery rack detail*

### Frequently asked questions

**Where can I find how much energy is left in my battery?**

The battery dashboard shows the current **state of charge (SOC)** as a percentage and, where available, the amount of energy still available for discharge in kWh, both as an overall figure and per individual battery unit. The EMS dashboard also displays a summary of the current SOC.

To understand what the algorithm is currently deciding for a specific device, open the **EMS dashboard**. It shows the algorithm's active decision per device, for example whether a battery is being charged, discharged, or held in standby, and why.

**Why is my battery still charging or discharging when it should not be?**

Several factors can cause small unexpected power flows:

-   A configured **grey zone** around zero kW within which the system does not actively correct.
-   Measurement tolerances and a small delay between measuring and adjusting.
-   Other active strategies, such as imbalance trading signals or a manual override.
-   Loads behind your main meter that are not controlled by the EMS.

If the behaviour is persistent and significant, check the active strategy settings and any manual overrides under **Devices**.

**Does the battery still work when the controller is offline?**

When the EMS controller is offline, the battery is no longer under active smart control by Voltmasters. Some devices have a built-in fallback mode, for example a fixed charge power for an EV charger, but price optimisation, grid protection, and strategy-based control are not available while the controller is disconnected. Smart control resumes automatically once the controller comes back online.