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Charger Missing AC Generac: Causes, Troubleshooting, and Solutions

As a generator owner, you rely on your unit to provide power during an outage or other emergencies. However, when you find that your Generac generator‘s battery is not charging, it can be frustrating and concerning.

This article will discuss what charger missing AC Generac is, how to identify the problem, and what steps to take to address it.

charger missing ac generac

Charger Missing AC Generac

The charger’s missing AC Generac is an error message that appears on your generator’s control panel. This message indicates that your generator’s battery is not receiving a charge from the generator’s built-in charger.

This problem can occur due to a variety of reasons, including a malfunctioning charger or a loose connection.

Understanding the Problem

Before we dive into troubleshooting and solutions, let’s first understand the problem of a missing AC charger. The charger is responsible for charging the battery of the generator, which is essential for the generator to start and run properly. If the AC charger is missing, the generator’s battery won’t be charged, and the generator may fail to start or shut down unexpectedly.

Causes of a Missing AC Charger

There are several possible causes of a missing AC charger, including:

Loose or Damaged Wires

If the wires connecting the charger to the generator are loose or damaged, the charger won’t function correctly. Check the wires for any signs of damage, such as frayed insulation or corrosion. Tighten any loose connections and replace any damaged wires.

Failed Charger

If the charger itself has failed, it will need to be replaced. You can test the charger using a multimeter to determine if it’s functioning correctly.

Tripped Circuit Breaker

If the circuit breaker for the charger has tripped, the charger won’t receive power. Check the circuit breaker and reset it if necessary.

Power Outage

If there’s a power outage in your area, the generator won’t be able to charge its battery. This is why it’s essential to have a backup power source for your generator, such as a portable solar panel or battery pack.

Troubleshooting Steps

Once you’ve identified the possible causes of a missing AC charger, it’s time to troubleshoot the issue.

Follow these steps to diagnose and fix the problem:

Step 1: Check the Wires

Inspect the wires connecting the charger to the generator for any signs of damage or looseness. Tighten any loose connections and replace any damaged wires.

Step 2: Test the Charger

Use a multimeter to test the charger and ensure that it’s functioning correctly. If the charger has failed, it will need to be replaced.

Step 3: Check the Circuit Breaker

Check the circuit breaker for the charger and reset it if necessary. If the circuit breaker keeps tripping, there may be a problem with the wiring or the charger itself.

Step 4: Use a Backup Power Source

If there’s a power outage in your area, use a backup power source for your generators, such as a portable solar panel or battery pack. This will ensure that your generator’s battery remains charged and ready to use.


Once you’ve identified the cause of the missing AC charger and completed the troubleshooting steps, it’s time to implement a solution. Here are some solutions to consider:

Replace the Charger

If the charger has failed, you’ll need to replace it. You can purchase a replacement charger from a Generac dealer or online retailer.

Install a Surge Protector

Installing a surge protector can help prevent circuit breakers from tripping during power surges or outages

Use a Generator Cover

A generator cover can protect your generator from damage caused by weather or other environmental factors. This can help prevent loose or damaged wires, which can cause the charger to malfunction.

Hire a Professional

If you’re unsure of how to troubleshoot or fix the problem, it’s best to hire a professional. A qualified technician can diagnose and repair the issue quickly and efficiently, ensuring that your generator is back up and running as soon as possible.

What happens when the charger is missing?

When a charger is missing for a Generac, several issues can arise. The Generac will not be able to recharge its battery, which means that it will not be able to function properly during a power outage.

The battery will eventually drain, which can lead to damage to the Generac’s engine. Additionally, a missing charger can void Generac’s warranty, which means that any repairs needed will not be covered.

In some cases, a missing charger may also indicate that there are other issues with the Generac that need to be addressed. Therefore, it is important to replace a missing charger as soon as possible to avoid any further complications or damage.

People also ask

What does the charger warning mean on the Generac generator?

If a charger warning appears on a Generac generator, it means that the battery charger is not functioning properly. This warning can indicate that the battery is not being recharged, which can lead to the generator not being able to start during a power outage.

It is important to address the issue as soon as possible by checking the battery charger and the battery connections to ensure that they are functioning properly.

Does a Generac generator charge its own battery?

Yes, many Generac generators, especially standby models, have a built-in battery charger that keeps the generator’s battery charged.
This ensures that the generator’s battery is ready to start the engine when needed, such as during a power outage.

Proper maintenance and periodic checks of the battery charger are still essential to ensure the battery remains in good condition.

What is Generac error code 2780?

Generac error code 2780 is a communication error that occurs between the generator controller and the transfer switch.

This error code can indicate a problem with the wiring or the connection between the generator and the transfer switch. It can also be caused by a faulty controller or transfer switch.

It is important to address this issue promptly by checking the wiring and connections to ensure that they are secure and properly connected. If the issue persists, it may be necessary to replace the controller or transfer the switch.

What is error code 1100 on Generac?

Error code 1100 on Generac generators typically indicates a problem with the generator’s battery charger. It means that the battery charger is either faulty or not functioning correctly.

This can result in inadequate charging of the generator’s battery, potentially leading to startup issues or failure to maintain a proper charge.
To resolve the error, it’s recommended to have the battery charger inspected and repaired by a qualified technician.


In conclusion, charger missing In ac generac, and the absence of an AC charger for Generac generators can pose a significant inconvenience for users who require a reliable power source during emergencies or off-grid situations. While there are alternative charging methods available, such as DC charging or using a separate inverter, these options may not always be practical or feasible.

Therefore, it is recommended that users of Generac generators consider purchasing an AC charger to ensure an uninterrupted power supply and peace of mind. It is also advisable to consult the manufacturer’s guidelines and seek professional assistance when choosing and installing a compatible charger.

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