Loading

What size battery in a Ford F-250 diesel?

The standard battery size for a Ford F-250 diesel truck is a Group 65 battery. This battery typically has a capacity of 650 cold cranking amps (CCA) and a reserve capacity of 120 minutes.


Detailed Overview of the Ford F-250 Diesel Battery


The Ford F-250 is a popular heavy-duty pickup truck, often equipped with a powerful diesel engine. The battery size in these trucks is an important consideration, as it needs to provide sufficient power to start the diesel engine and support the truck's electrical systems.


The standard battery installed in a Ford F-250 diesel is a Group 65 battery. This battery type is commonly used in heavy-duty trucks and other large vehicles. The key specifications of a Group 65 battery for the F-250 diesel are:



  • Battery Capacity: 650 cold cranking amps (CCA)

  • Reserve Capacity: 120 minutes

  • Voltage: 12 volts


The high CCA rating is necessary to provide the significant amount of power required to start a diesel engine, which has higher compression ratios than a gasoline engine. The reserve capacity indicates how long the battery can power the truck's electrical systems without the engine running.


It's important to note that the battery size may vary slightly depending on the specific model year and configuration of the Ford F-250 diesel. Some higher-trim or specialty models may come equipped with a larger battery to handle additional electrical loads. However, the Group 65 battery is the standard and most common choice for the F-250 diesel.

How long do F250 diesel batteries last?


between 3-5 years
Ford F-250 batteries frequently last between 3-5 years, but this is variable depending on weather conditions, driving habits, the type of battery, and more. You can prolong the life of your F-250 battery by: Cleaning the terminals and posts of corrosion with the suitable cleaning solution & a wire brush.



What does the second battery do on a diesel truck?


Diesel trucks tend to have very high compression engines, which are harder to get started, than a typical gasoline-powered engine. That means more cranking amps are a good thing and two batteries in parallel can provide that extra cranking power.



Can you replace just one battery in a diesel truck?


However, if you have a diesel truck with two batteries and one needs to be replaced, you really should replace both batteries at the same time.



Which battery is best for a diesel truck?


Best Batteries for Diesel Trucks in 2024

  1. XS Power D3400 XS Series 12V AGM High Output Battery.
  2. Optima Batteries 8020-164 35 RedTop Starting Battery.
  3. Odyssey EXTREME 34/78-PC1500DT Battery.
  4. ACDelco 94RAGM Professional AGM Automotive BCI Group 94R Battery.



What size battery is needed for a diesel engine?


The best diesel engine batteries are 12 volt batteries. When starting a diesel engine, it is typical for a battery to have less than 12 volts, but then get up to closer to 14 volts and above when the engine has warmed.



How many cranking amps does a diesel truck need?


For diesel engines, you need: 250 to 400 amps for a 4 cylinder. 400 to 500 amps for a 6 cylinder. 500 to 700 amps for an 8 cylinder.



How many batteries does a F250 diesel take?


two batteries
Diesel trucks have two batteries , as opposed to most cars, which have only one. Diesel trucks need two batteries so they can crank at a higher amp. This is needed because a diesel engine demands a high-resistance load to start successfully.



Which battery to jump on 6.7 Powerstroke?


And back up by the alternator. Around that cable and to the battery. Remember when you go to get your jumper cables or battery jumper connect the negative first. And then come over here.



Why does my f250 diesel have 2 batteries?


Increased Electrical Demand: The F-250 diesel is often equipped with various electronic systems and accessories that can draw significant power. Two batteries help support this additional electrical load, ensuring that all systems function properly without draining a single battery.



Should I replace both batteries in my diesel at the same time?


However, if you have a diesel truck with two batteries and one needs to be replaced, you really should replace both batteries at the same time. Batteries in series or parallel applications, where more than one battery is connected to another battery should always have batteries that are identical in age, size and type.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.