Updating Battery Firmware

You can update the HELIOS ESS battery firmware in two ways:

• LYNK II and LYNK ACCESS. For instructions, refer to the LYNK II Installation and Operation Manual (805-0033).

• LYNK ACCESS. Refer to the following procedure.

Update HELIOS ESS Firmware With LYNK ACCESS

1. Connect a USB cable to your computer and to the USB Type C port on the HELIOS ESS (see Item #11 in the Battery Features topic).

2. From the Discover Energy Systems website (discoverenergysys.com), download and install the latest version of LYNK ACCESS software, compatible with Windows 10 / 11.

3. Download the latest HELIOS ESS firmware file.

4. Open LYNK ACCESS and select the Battery tab to view the battery information.

5. Click the Upload Battery Firmware button, and in the dialog box that pops up, click Select and open the downloaded battery firmware file.

6. Click Upload to complete the battery firmware update process.