What Is The Best Battery For Dodge Ram 2500 Diesel On Ubtrueblue Automotive RAM Diesel? Replacement Truck Cummins Size

What is the Best Battery for Dodge RAM 2500 Diesel?

Owen McBride | Last updated Thursday, April 13th, 2023

Ever been stuck in the middle of nowhere with a dead battery? Not a good time, right? That's why having a strong battery for your Dodge RAM 2500 diesel is a must. In this article, we'll share the best battery options for your truck and the key things to think about when getting one.

Types of Batteries for RAM 2500 Diesel

Let's talk about the two main types of batteries for your RAM 2500 Diesel: lead-acid and lithium-ion. If you're trying to save money, go with lead-acid batteries. But if you want a battery that lasts a long time, consider lithium-ion batteries. Here's why:

Lead-acid batteries are less expensive, but they don't last as long and need more care. They don't do well in very hot or very cold weather. On the other hand, lithium-ion batteries cost more, but they have a longer life, need less attention, and can handle extreme temperatures.

If you live in a place with hot summers and cold winters, a lithium-ion battery is your best choice. It can work well in both the heat and the cold without losing power.

Factors to Consider When Choosing a Battery for RAM 2500 Diesel

When you're picking a battery for your truck, there are some important things to consider:

  • Battery Size and Power: Get the right-sized battery that fits your Dodge RAM 2500 diesel. Your owner's manual can help you find the recommended size and power.
  • Cold Weather Performance: This tells you how well the battery can start your truck in the cold. More is better when it's chilly outside.
  • Run Time Without Charging: This is how long the battery can power your vehicle without needing a recharge. More is better here.
  • Maintenance: Some batteries need regular care, while others don't. If you don't want to worry about maintenance, go for one that doesn't need it.
  • Brand Reputation and Warranty: Choose a battery from a trusted brand with a good warranty for added peace of mind.

Top Battery Brands for RAM 2500 Diesel

Now that we've talked about what to look for in a battery, let's check out some of the top battery brands for your Dodge RAM 2500 diesel truck. These are brands that many truck owners trust:

  • Optima: Optima is famous for its high-quality batteries that can handle extreme temperatures. They come with a 3-year warranty. While they cost a bit more, you get a reliable product.
  • Odyssey: If you need a long-lasting battery that can handle heavy use, go for Odyssey. Their batteries come with a 3 to 4-year warranty and don't need maintenance. While they might cost a little more upfront, they'll prove their value over time.
  • ACDelco: If you're on a budget, ACDelco's Professional series is a solid choice. It may not have all the fancy features, but it's a dependable and affordable option.
  • DieHard: DieHard batteries have a strong reputation for reliability and come with a 3-year warranty. They are budget-friendly compared to some other brands.
  • NorthStar: NorthStar batteries are known for their quality and can handle heavy use. They come with a 4-year warranty and don't require maintenance. They are a bit more expensive but provide long-term reliability.

How Long do RAM 2500 Diesel Batteries Last?

If you drive a RAM 2500 diesel truck, you know having a reliable battery is crucial. But how long can you expect your battery to keep working? Well, it depends on a few things.

Usually, a RAM 2500 diesel battery lasts from 3 to 5 years on average. But this can change based on factors like the weather, how you drive, and how well you take care of it. If you often drive in super cold or hot weather, your battery might not last as long.

And if you take lots of short trips or don't drive your truck regularly, your battery may not get a chance to fully recharge, which can make it wear out faster.

The good news is there are simple things you can do to make your battery last longer. Always remember to turn off things like the lights, radio, and air conditioner when you turn off your truck.

It's also a good idea to have a mechanic check your battery and charging system from time to time to make sure everything is in good shape. By doing these things, you can help your RAM 2500 diesel battery last as long as possible.

How Many Batteries Does a RAM 2500 Diesel Take?

Well, it really depends on the specific RAM 2500 Diesel model and year you have. In most cases, these trucks have just one battery. But in some of the heavy-duty models, you might have the option to go for two batteries. These extra batteries help power extra stuff like accessories and electric things.

If you're not sure whether your RAM 2500 Diesel has one or two batteries, you can look in the owner's manual or ask a local dealer or mechanic. And if you're thinking about adding more things to your truck, like a winch or a loud sound system, it's a good idea to think about getting that second battery for enough power.

Why Does RAM 2500 Diesel Have Two Batteries?

You might have seen that some RAM 2500 Diesel trucks come with two batteries instead of one. So, why does the RAM 2500 Diesel have two batteries?

It's pretty simple: the second battery gives extra power for things like accessories and electrical stuff. This truck is big and strong, made for heavy lifting and towing, which needs a lot of power. The two batteries make sure your truck can start, run all the electrical things, and keep everything working.

The second battery also acts as a backup if the first one doesn't work. If you're far from help and your battery dies, having a backup can be the difference between getting back on the road quickly or getting stuck for a while.

So, if you plan to do lots of heavy lifting or towing with your RAM 2500 Diesel, think about getting two batteries. It might cost a bit more at the start, but it can save you from trouble (and expensive fixes) later on.


To wrap it up, having a good battery for your Dodge RAM 2500 diesel is super important, especially if you drive a lot. When picking a battery, remember to think about its type, size, power, and how well it works in the cold. Also, check if it needs a lot of maintenance, the brand's reputation, and the warranty it comes with. By thinking about all these things, you can pick the right battery that suits your needs and wallet.

As for the best battery brands for your Dodge RAM 2500 diesel, you can trust Optima, Odyssey, DieHard, and NorthStar. Optima and Odyssey might cost a bit more, but they have longer warranties and can handle really hot or cold weather. DieHard and NorthStar are more budget-friendly but still do a great job and have good warranties.

In the end, the battery you choose for your Dodge RAM 2500 diesel depends on what you need and like. But by considering the stuff we talked about in this article and checking out the top battery brands, you can make a smart choice and avoid getting stuck with a dead battery.

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