9 Best Battery For Generac Generator of November 2025

Buying Guide Of Generac Generator Batteries And Their Features

Generac generators are popular for many homeowners with power outages or storm damage. Generators provide the necessary electricity to keep your home powered during emergencies, but they require battery power. Generac generators can be powered by one of three batteries: lead-acid, deep cycle, and gel. A generator's battery is typically included in the purchase price of the generator, so most customers never have to think about buying Generac generator batteries. Here are some things that you should know before you go ahead and buy one.

Specifications Of A Generac Generator Battery

First, it's important to know the specifications of a Generac generator battery. The battery should have an amp hour rating equal to or greater than the wattage of your generator. For example, if you have a 2000-watt generator, you'll need a battery with at least a 2000-amp hour rating. The battery should also be 12 volts or higher.

Things To Keep In Mind Before Choosing A Generac Generator Battery

There are a few things you'll want to keep in mind before choosing a Generac generator battery.

Location

The location of the battery is important. The battery should be easily accessible to be replaced when needed. It's also a good idea to choose an easy battery to install.

Climate

The climate where you live can affect the life of your generator battery. If you live in a place with extreme temperatures, you'll want to choose a battery that can withstand those conditions and can be charged anywhere by Portable Marine Battery Chargers. For example, in humid regions, you'll want to choose a deep cycle battery, which can withstand more moisture; similarly, for cold and dry regions, you'll want to choose a lead-acid battery.

Pricing

Pricing depends on the size of your battery. The price may also be affected by how much you use the generator and whether or not it is used regularly, which means that if you live in an area where power outages are common, then a deep cycle battery might increase the life of your Generac Generator Batteries. Also, you can check the Best Marine Cranking Batteries, which will cost you less and provide high performance.

Size of the battery

Generac generators can be used to power a home for an extended period of time. If the battery is not properly sized, it may drain before your generator runs out of fuel and shuts off. This will leave you without power when you most need it and cause problems with important appliances like refrigerators or heating systems.

Cold weather kit

If you live in an area that experiences cold weather, it's a good idea to purchase a cold weather kit for your generator. A cold weather kit will help keep the battery warm and extend its life.

Maintenance of a Generac generator battery

Like any other type of battery, the Generac generator batteries need to be maintained. Make sure that the battery is clean and dry. The terminals should also be free of corrosion. If the battery isn't maintained, it could shorten its life span. A few ways to maintain your Generac generator battery include:

Checking the fluid levels and adding distilled water as needed

Charging the battery regularly, especially if it isn't being used often

Ensure that the generator is properly grounded to avoid electrical shorts

The life of a Generac generator battery

Like Car Batteries, a Generac generator battery typically has a lifespan of three to five years. However, this can vary depending on how often the generator is used, the climate you live, and the type of battery. For example, for a lead-acid battery, the life of a Generac generator battery typically ranges from one to three years. The lifespan for deep cycle batteries can last anywhere from five to ten years, and gel cell batteries have been known to last up to 15-20 years.

Conclusion

It's important to know what type of battery your Generac generator needs to keep your home powered during emergencies. Make sure that you choose a battery that is easy to install and can withstand the climate where you live. If you live in an area with extreme temperatures, you'll also want to choose a battery that can withstand those conditions. The price of the battery may vary depending on the size and type of battery. Keep in mind that the life of a Generac generator battery depends on how often it is used, so if you live in an area where power outages are common, you might want to invest in a deep cycle battery.