Read the manual thoroughly and understand all of the instructions, cautions, and warnings before using this equipment. If any section of the manual is not understood, contact your nearest authorized dealer, or contact Generac Customer Service at 1-888-436-3722 (1-888-GENERAC), or www.generac.com with any questions or concerns. 

How to view the battery voltage and status on home standby generators

Home standby generators feature the ability to view the current battery health on the control panel for units with Nexus, Evolution 1, and 2 controllers. Evolution 1 and 2 control panels will display a battery "condition" representing the state of battery health, while Nexus controllers will display the actual voltage. Additionally, the generator's current battery voltage is displayed in the Generac Mobile Link App. See How Do I Set up a Mobile Link Account?

Environment

This article applies to Generac air-cooled Guardian Series 10-26 kW generators (2013 to present).

In this article

Viewing battery voltage information from the controller

• Evolution 2
• Evolution 1
• Nexus

Viewing battery voltage information in Mobile Link

• Using the website
• Using the mobile app

How to view battery voltage on home standby controllers 

To check the battery health at the generator control panel, refer to the appropriate controller menu map below.

Navigation menus 

Evolution 2 Controllers (2017 - Present)

1. Press ESC from the system menu. The system menu will display the generator's status (ready to run, switched to off, etc.)
2. Using the navigational buttons, arrow over to DATE/TIME and press ENTER.
3. Arrow over to MAINT and press ENTER.
4. Arrow over to Battery and press ENTER.
5. The battery condition is now displayed:

• Good: The battery is above 12.6 VDC. No action needed.
• Inspect Battery: The battery is due for annual maintenance. See: What Does the "Inspect Battery" Message Mean on My Generator?
• Check Battery: Battery is below 12.6 VDC. 

Note: The Check Battery condition does not necessarily indicate a battery problem, only that the voltage is below 12.6 VDC and may be going through a charge cycle. 

Evolution 1 Controllers 

1. Press ESC from the system menu. The system menu will display the generator's status (ready to run, switched to off, etc.)
2. Using the navigational buttons, arrow over to BAT- and press ENTER.
3. The battery condition is now displayed.

• Good: The battery is above 12.6 VDC. No action needed.
• Inspect Battery: The battery is due for annual maintenance. See: What Does the "Inspect Battery" Message Mean on My Generator?
• Check Battery: Battery is below 12.6 VDC. 

Note: The Check Battery condition does not necessarily indicate a battery problem, only that the voltage is below 12.6 VDC and may be going through a charge cycle. 

Nexus Controllers (2013-2017)

1. Using the navigational buttons, select the STATUS menu.
2. Select the DISPLAY option.
3. Select the BATTERY VOLTAGE option.

*Nexus control panels display the current battery voltage.


How to view battery voltage on Mobile Link 

If your generator is registered with a Mobile Link account and has a supported controller type, you can view battery voltage information in the web or mobile app. For more information on connecting your generator to Mobile Link see How Do I Set up a Mobile Link Account?

Using the website (app.mobilelinkgen.com):

1. Log in to your Mobile Link account at app.mobilelinkgen.com and click the generator's tile.
2. The Generator Details page will display. The Battery Voltage will display on the right side of the screen. For additional information, hover over the question mark icon on the far right.

Using the Mobile Link app (iOS and Android)

1. Launch the Mobile Link app.
2. Make sure you are on the Dashboard menu. 
3. Tap the registered generator displayed on the dashboard. The voltage information will be displayed along with other generator details.