> For the complete documentation index, see [llms.txt](https://docs.voltmasters.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.voltmasters.io/voltmasters-platform/3.-battery-ess-dashboard.md).

# Battery (ESS) Dashboard

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

{% hint style="info" %}
In the top-right corner, you can choose your preferred view: each battery separately or all batteries combined.
{% endhint %}

### 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.

<div data-with-frame="true"><figure><img src="/files/Cw8MRLNECWirNTuOpZ4N" alt="Voltmasters EMS: ESS dashboard"><figcaption><p>Voltmasters EMS: ESS dashboard</p></figcaption></figure></div>

### Battery details

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

<div data-with-frame="true"><figure><img src="/files/5Ol4QEmyCVfnkJnr7GKg" alt="Voltmasters EMS: battery rack detail"><figcaption><p>Voltmasters EMS: battery rack detail</p></figcaption></figure></div>

### Frequently asked questions

<details>

<summary><strong>Where can I find how much energy is left in my battery?</strong></summary>

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.

</details>

<details>

<summary><strong>Why is my battery still charging or discharging when it should not be?</strong></summary>

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**.

</details>

<details>

<summary><strong>Does the battery still work when the controller is offline?</strong></summary>

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.

</details>


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