What Is the Best Battery for a Generac Generator?

Batteries are the heart and soul of Generac generators, playing a pivotal role in their operation. Understanding the importance of the battery is crucial for maintaining the generator’s functionality and ensuring that it operates when needed most.

What Is the Best Battery for a Generac Generator? Choose between lead-acid and lithium-ion batteries for your Generac generator based on your budget, maintenance preference, and climate. Lead-acid is reliable but requires upkeep, while lithium-ion is maintenance-free and long-lasting but pricier. Consider factors like size, CCA, and RC to match your power needs and outage expectations.

See Also: How to Change Generator Oil?

What Is the Best Battery for a Generac Generator? – Guide

Let’s explore the importance of selecting the right battery for your Generac generator, examine the key factors to consider, and provide insights into the best battery options available.

1. The Crucial Role of a Battery in a Generac Generator

Before delving into the specifics of the best battery options for your Generac generator, it’s essential to understand the critical role a battery plays in ensuring your generator’s functionality.

A Generac generator is designed to start automatically when a power outage occurs. It requires electrical energy to initiate this process, and that’s where the battery comes into play.

Starting the Generator: When the power goes out, the generator’s battery provides the necessary electrical energy to kickstart the generator’s engine. This initial burst of power is vital for a smooth and rapid startup, ensuring that your essential appliances and systems are powered without delay.

Maintaining System Health: Besides starting the generator, the battery also plays a role in maintaining the generator’s health. It continually charges and provides power for the control panel, keeping it operational and ensuring the generator is ready to spring into action when needed.

2. Factors to Consider When Choosing a Battery

Selecting the right battery for your Generac generator is a crucial decision that will impact the unit’s performance and reliability. Several factors should be taken into account when making this choice.

Battery Type: Generac generators typically use two types of batteries – lead-acid batteries and lithium-ion batteries. Lead-acid batteries are the traditional choice, known for their reliability and cost-effectiveness. On the other hand, lithium-ion batteries are lighter, have a longer lifespan, and are maintenance-free. Your choice should depend on your budget and the specific requirements of your generator.

Battery Size: The size of the battery, often measured in ampere-hours (Ah), determines how long the battery can provide power. A larger battery will have a longer runtime during an outage. Consider your power needs and the expected duration of outages in your area when choosing the battery size.
Cold Cranking Amps (CCA): CCA is a crucial factor if you live in a region with cold winters. It measures the battery’s ability to start the generator in cold temperatures. Ensure that the battery you choose has a CCA rating suitable for your climate.
Reserve Capacity (RC): RC is another important metric that indicates how long the battery can provide a continuous power supply without recharging. If you anticipate longer outages, a higher RC rating is beneficial.

Maintenance: Consider whether you prefer a maintenance-free battery or are willing to invest time in maintaining your battery. Lead-acid batteries require periodic maintenance, while lithium-ion batteries are virtually maintenance-free.

3. Best Battery Options for Generac Generators

Now that we’ve covered the critical factors to consider, let’s explore some of the best battery options for your Generac generator.

1. Generac 5819 Model 26R Wet Cell Battery

The Generac 5819 Model 26R Wet Cell Battery is a reliable choice that is specifically designed for Generac generators. This lead-acid battery has a 525 CCA rating and 75 RC, making it suitable for most regions and offering decent runtime during outages.

It is maintenance-free, eliminating the need for constant upkeep. Generac manufactures this battery, ensuring compatibility and optimal performance with your generator.

2. Mighty Max Battery ML35-12

The Mighty Max Battery ML35-12 is a versatile option for Generac generators. It is a sealed lead-acid (SLA) battery, which means it is maintenance-free and spill-proof. With a 35Ah capacity, it provides a decent runtime during power outages.

Its 12V voltage and 315 CCA rating make it a reliable choice for starting your generator. Additionally, this battery is known for its durability and excellent performance even in extreme temperatures.

3. ExpertPower EXP12180

The ExpertPower EXP12180 is another SLA battery that offers excellent performance for Generac generators. With a 12V voltage, 18Ah capacity, and a 180 CCA rating, this battery is suitable for generators in a wide range of sizes. It is maintenance-free and spill-proof, making it a hassle-free choice for users. ExpertPower batteries are well-regarded for their durability and reliability.

4. AIMS Power LFP12V10PL

For those who prefer lithium-ion technology, the AIMS Power LFP12V10PL is an excellent choice. This 12V, 10Ah lithium iron phosphate (LiFePO4) battery is lightweight and boasts a long lifespan. It offers a substantial advantage in terms of cycle life compared to traditional lead-acid batteries. This battery’s high-performance characteristics make it a premium option for users who value efficiency and longevity.

4. Installation and Maintenance

Proper installation and maintenance are crucial to ensuring that your chosen battery performs optimally and has a long lifespan.

Installation: Follow the manufacturer’s guidelines and your generator’s manual for battery installation. Ensure that the battery is securely connected, and the terminals are clean and tight. Additionally, use the appropriate battery box or enclosure to protect the battery from the elements.
Maintenance: If you opt for a lead-acid battery, regular maintenance is essential. Check the water level in the battery cells, and add distilled water as needed to maintain the proper level. Ensure that the terminals are clean and free of corrosion. For lithium-ion batteries, there is minimal maintenance required other than periodic checks for any visible damage or irregularities.

Conclusion

In conclusion, the battery in your Generac generator is a critical component that ensures your generator starts and operates efficiently during power outages. Selecting the best battery for your specific needs is essential for peace of mind and uninterrupted power supply. Consider factors such as battery type, size, CCA, RC, and maintenance requirements when making your choice.

While the Generac 5819 Model 26R Wet Cell Battery is a reliable and compatible option, the Mighty Max Battery ML35-12 and ExpertPower EXP12180 offer versatility and durability for a range of generator sizes. For those seeking a premium option, the AIMS Power LFP12V10PL lithium-ion battery stands out with its exceptional performance and extended cycle life.

Whichever battery you choose, be sure to follow proper installation and maintenance procedures to ensure your generator is always ready to provide backup power when you need it most. With the right battery in place, you can rest assured that your Generac generator will serve you well during emergencies and power outages.