# Frax

> The Frax EMS battery system in the Voltmasters EMS: one Modbus TCP unit exposed as a PCS with its own BMS and on-board metering.

Source: https://voltmasters.io/en/docs/device-integrations/battery-systems/frax/

Our EMS supports battery systems from Frax.

Frax supplies an integrated energy storage system that combines the power conversion system (PCS), battery management system (BMS) and on-board metering in a single managed unit.

### Supported devices

-   **Frax EMS**: integrated battery energy storage system

The Frax system connects over **Modbus TCP** and is represented as a battery inverter (PCS) together with its battery management system, on-board PV and an energy meter. The **battery capacity is entered during device setup**: it is not read from the device, so make sure it is configured correctly.

> **Note**
>
> The Frax integration does not expose cumulative energy counters, so production and consumption totals are derived from live power measurements.

### EMS functionality

With the current integration, our EMS enables:

-   Monitoring of battery status and performance
-   Smart charging and discharging control
-   Optimization of self-consumption
-   Peak shaving and load balancing

Additional functionality may be added over time as integration capabilities evolve.