Sproat Lake, Vancouver Island, BC

What Does Quiet Time Refer To When You Have An AGS?

What Does Quiet Time Refer To When You Have An AGS?

What Happens If The Designated Quiet Time Prevents The Charging Of My Off-Grid System, Resulting In A Shutdown Of The Entire System?

  • What Is Quiet Time In An AGS System?
  • What If My Batteries Are Too Low During Quiet Time And The Whole System Shuts Down?
  • Conclusion

What Is Quiet Time In An AGS System?

In the context of an AGS (Auto-Generator Start) system, “quiet time” typically refers to a predefined period during which the AGS is programmed not to start the generator, regardless of the set conditions that would normally trigger an automatic start.

AGS systems are commonly used in off-grid or backup power systems to automatically start a generator when certain conditions are met. These conditions may include low battery voltage, high power demand, or other factors that suggest the need for the generator to provide additional power.

The concept of “quiet time” introduces a time-based restriction, usually during periods when minimal disruption or noise is desired. For example, during nighttime hours or specific times when noise levels should be minimized in a residential or campground setting. During the quiet time, the AGS system is programmed not to initiate the generator start, even if other conditions are met.

The ability to set quiet times adds a level of control and consideration for the environment, allowing users to balance the need for automatic power generation with the desire for reduced noise during specific periods. This feature is particularly relevant in settings where minimizing noise disturbance is a priority, such as in residential neighborhoods or recreational areas.

What If My Batteries Are Too Low During Quiet Time And The Whole System Shuts Down?

Insufficient battery levels during the quiet time, coupled with a programmed restriction preventing the Automatic Generator Start (AGS) system from initiating the generator, may lead to an unintended system shutdown. The recent occurrence of a customer facing such a shutdown due to low batteries during the AGS’s quiet period has motivated me to explore and elaborate on this particular issue in this article.

In this situation, the absence of generator support for recharging batteries may result in a depletion of battery capacity, triggering a system shutdown to prevent damage. Despite having the low battery cut-off (LBCO) configured to safeguard the batteries, this precautionary measure still leads to the system shutting down.

To address this concern, if your AGS model or brand permits, consider modifying the settings to enable generator starts during critical low battery scenarios, even in quiet times. This adjustment ensures that when the batteries hit a predetermined voltage threshold, the generator can initiate, supplying the required power for recharging. Here are steps you can follow:

1. Adjust Quiet Time Settings:

Modify the quiet time settings to allow the generator to start when the battery voltage drops below a certain critical level, even during the designated quiet hours. Note: ( Some AGS devices won’t allow this to happen during quiet time regardless of low battery detection.) Alternatively, consider slightly increasing your low voltage or capacity trigger set point, especially when you are not present, to prompt the generator to start earlier than originally programmed.

2. Review Battery Capacity and Usage:

Make certain that your battery bank is adequately sized to meet your energy requirements. If your batteries consistently reach critically low levels, it could be a signal that your battery bank’s capacity is inadequate, presenting a potential resolution to your concerns.

3. Consider Alternative Charging Sources:

Explore the possibility of integrating alternative charging sources, such as solar panels or wind turbines, to complement the generator and help maintain battery levels during quiet times. I’m aware that certain customers we have do have solar panels, but the winter season, especially here on the north west coast characterized by reduced sunlight and obstructions from mountains and trees, is limiting their sun exposure.

4. Professional Assessment:

If you continue to experience issues, it may be advisable to consult with a professional installer or technician familiar with your specific system. They can assess your setup, recommend adjustments, and ensure that your AGS settings align with your energy requirements and constraints. We can help just give us a call or message us here in our


Remember that the proper configuration of your AGS system is crucial to maintaining a reliable and efficient off-grid power system. Adjusting settings based on your specific needs and circumstances can help prevent unexpected shutdowns and ensure a continuous and stable power supply.

In the rare event that you encounter issues you don’t comprehend or require assistance with your solar power system, please feel free to reach out to us at IOTG Solar. We are committed to helping you understand the root causes of any problems and providing effective solutions to ensure you can fully enjoy the power generated by your system.

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