10 Best Batteries for 2008 F250 6.4 Diesel Reviews

If you own a 2008 Ford F-250 with the 6.4L Powerstroke diesel, you already know that a reliable battery isn’t just a convenience—it’s a necessity. This truck demands serious cranking power, especially on cold mornings, and the wrong battery can leave you stranded at the worst possible time. Maybe you’ve dealt with slow cranking, dim headlights, or even a no-start situation when the temperature drops. That’s frustrating, and it’s also hard on your glow plugs, starter, and fuel system.

In this guide, we’ll walk you through the best battery options for your 2008 F250 6.4 diesel, covering everything from stock replacements to high-performance AGM upgrades. You’ll learn what specifications matter most—like cold cranking amps, reserve capacity, and group size—and we’ll include honest reviews of each product so you can choose with confidence. Whether you’re looking for a maintenance-free daily driver battery or a heavy-duty deep-cycle option for accessories, we’ve got you covered.

UPLUS BCI Group 48 AGM Battery – Premium H6 for Start-Stop & High Load

For a 2008 F-250 6.4 diesel, you need a battery that can handle the high electrical demands of glow plugs, fuel injection, and cabin accessories. The UPLUS Group 48 AGM battery delivers 760 CCA and 120 RC, which provides strong starting even in subzero conditions. Its AGM design means it’s sealed, spill-proof, and resistant to vibration—important when you’re driving on rough roads or off-road.

One standout feature is the enhanced cycling life. The high-density negative paste and silver calcium stamped alloy give this battery up to four times the cycle life of a standard flooded battery. This matters if your truck sits for days or if you frequently take short trips. The dimensions (10.98 x 6.81 x 7.51 inches) and left-negative terminal layout match the stock group size H6 for many Ford trucks. Just double-check your current battery size before ordering.

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• Battery dimensions — BCI Group size 48 (H6 L3), 10.98 x 6.81 x 7.51 inches, Terminal Layout: Left: – Right: +. Battery dimensions, cold cranking amps, terminal location and battery type are key factors in getting the right unit. Please measure your old battery and compare the size with this battery, if the measurements are the same, the positive and negative positions are the same, there is not much difference in CCA and it will fit your vehicle.
• 4 TIMES EXTRA CYCLING — High density negative paste and Enhanced life alloy or Silver Calcium stamped alloy.Uplus Start and Stop AGM battery has 4 times extra cycle life compared to standard conventional batteries.
• DESIGNED FOR VEHICLES WITH START-STOP — International standard size BCI Group 48 (H6/L3), easy to install.Ideal for vehicles with large electrical loads (DVD players, navigation systems, heated seats, power doors, etc.), vehicles used for frequent short trips or in stop-n-go traffic and vehicles that sit unused for days or weeks at a time.
• DEEP-CYCLE AND CRANKING POWER — Calcium lead positive grid, maximizes conductivity and allows for low resistance.Highest cold cranking amperes (760CCA) for engine starts, even reliable during cold winter temperatures.
• TOP-LEVEL SAFETY — 15 times more vibration-resistant.Vent cap design that resists acid leakage.Top-level safety features and absolutely no free acid.Original Spare Parts ensure the replacement battery has the same quality as the original one.
• LOCAL AFTER-SALES SUPPORT — 3-year warranty. UPLUS has a fixed office and warehouse in California and Georgia, responds within 12 hours.

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UPLUS YB14A-A2 ATV Battery – Compact AGM for Powersports, Not for Trucks

Let’s be clear: this battery is designed for motorcycles, ATVs, and snowmobiles, not for a heavy-duty diesel pickup. The YB14A-A2 is a 12V 12Ah AGM battery with only 210 CCA, which is far too low to crank a 6.4L Powerstroke. Its dimensions (5.24 x 3.54 x 6.85 inches) are tiny compared to what your F-250 needs. While it’s a well-made maintenance-free battery with a claimed 5-year lifespan and heat-resistant PP case, it simply does not belong under the hood of a 2008 F-250 diesel.

If you own a powersports vehicle alongside your truck, this battery might be a good choice for that application. But for the topic at hand, we cannot recommend it for your F-250 even in a dual-battery setup—the capacity and current output are insufficient.

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• 🔋—Motorcycle battery non-removable Sealed lead-acid AGM battery YB14A-A2 is a 12V 12Ah 210 Cold Cranking Amps (CCA) AGM (Maintenance Free) Battery.Dimensions: 5.24 inches x 3.54 inches x 6.85 inches.Weight: 9.79 Lbs Polarity: [+,-].Suitable for:YTX14AH-BS and YB14A-A2
• 🔋—5 years using time: With 99,9% above-average high purity level and corrosion resistant micro crystal structure, which ensures that our battery have over 5 years lifetime
• 🔋—PP material: The battery is made of PP material, which has better heat resistance and stronger usability in high temperature environment than traditional ABS material, and is not easy to deform
• 🔋—Safe to use: The use of our patented alloy greatly improves the battery's corrosion resistance and leak-proof performance. Maintenance-free design make battery to use without adding acid and water to ensure your safe use
• 🔋— US local office: We have established offices and warehouses in US. If product have any problems, we can solve it for you in USA. We provide 15 months warranty , and we will reply to your email within 12 hours

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Mighty Max YTX7L-BS – Small Motorcycle Battery, Wrong for Your Diesel

The YTX7L-BS from Mighty Max is another tiny AGM battery built for motorcycles and small engines. It offers just 6 amp-hours and 100 CCA, which won’t even begin to crank a 6.4L diesel. Dimensions are 4.40 x 2.75 x 5.19 inches, so it won’t physically fit in the battery tray of your F-250. Even if you could rig it, the starting current would instantly drop voltage and likely damage the battery.

That said, it’s a well-regarded battery for its intended use—lawnmowers, scooters, and small motorcycles. For your truck, look for something with at least 700 CCA and a group size like 48, 65, or 94R. This product does not belong on your list of candidates.

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• YTX7L-BS is a 12V 6AH 100 Cold Cranking Amps (CCA) Sealed Lead Acid (SLA) Battery
• Dimensions: 4.40 inches x 2.75 inches x 5.19 inches. Polarity: Positive on Right, Negative on Left. Listing is for the Battery and Screws only. No wire harness or mounting accessories included.
• SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover.
• Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures.
• Full One Year Warranty

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Weize Platinum AGM Group 48 – High-Capacity H6 with 760 CCA

The Weize Platinum AGM Group 48 is a direct competitor to the UPLUS unit above, and it’s an excellent choice for your 2008 F-250 6.4 diesel. With 760 CCA, 120 minutes of reserve capacity, and 70Ah capacity, it provides plenty of cranking power for cold starts and can handle auxiliary loads like a plow or winch. The AGM construction means zero maintenance and excellent vibration resistance.

Weighing in at approximately 45 pounds and measuring 10.94 x 6.89 x 7.48 inches, it fits many Ford trucks with the H6/L3 group size. The tapered terminals are left negative, right positive, which matches the OEM layout for many 2008 Super Duty models. Weize backs this battery with a 36-month warranty, which shows confidence in its longevity. Self-discharge is less than 8% after 90 days, so your truck starts after sitting a few weeks.

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• ✅Batter dimensions: 10.94" L x 6.89" W x 7.48" H, Terminal: Tapered terminal (Left negative (-), Right positive (+)). ✅Please ensure to verify the dimensions and terminal position before making a purchase to guarantee compatibility with your vehicle to avoid any fitment issues.
• 120RC rating： Provides reliable performance and long service life, Up to 2 times the cycle life of conventional batteries.Nominal Voltage:12V, Capacity: 60 Ah. CCA: 680A, Self Discharge: <8% after 90 days storage.Operating Temperature Range:-22°F ～158°F, Acceptable Charging Current: 0～18A, Charging Voltage: 14.4 ～15.0 V,
• 70AH capacity: Delivers consistent power over time, Cycles more, and recharges faster than conventional batteries.
• 760 CCA: Ensures quick and reliable starting power.Delivers superior starting power in cold weather, and resists internal corrosion from heat.
• Advanced technology: Specially designed for vehicles with start-stop technology and accessories that demand greater power, Whether you drive a car, truck, or SUV, this 120RC 70AH 760CCA automotive start-stop battery is the perfect choice for reliability.
• Low maintenance and easy to install： Leak-proof and certified non-spillable design for safer maintenance-free power, Constructed for greater vibration resistance and enhanced durability.
• We aim for quality followed up with quality customer service. Size, cold cranking amps,terminal location,and battery type are key pieces to getting the right unit. please measure your old battery and compare the dimensions with this battery,if the measurements are the same,positive and negative poles are consistent,CCA is no big difference,and it will fit your vehicle.
• ✅ AGM automotive starter batteries are specifically designed for Stop/Start applications and are ideal for vehicles with higher electrical accessory loads or those that require a high CCA starting battery with enhanced cyclic performance. However, they are not suitable for deep-cycle applications such as solar projects or marine use.

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OPTIMA RedTop 75/25 – Legendary SpiralCell Starting Power

OPTIMA’s RedTop is a legend in the battery world, and for good reason. The model 75/25 offers 720 CCA and 90 minutes of reserve capacity using OPTIMA’s patented SpiralCell technology, which uses 99.99% pure lead and tightly wound plates. This design makes it extremely vibration-resistant—15 times more than a standard flooded battery—and gives it up to three times longer life.

However, note the dimensions: 9.38 x 6.81 x 7.75 inches. That’s shorter than a typical group 48/65 battery, so you may need an adapter or bracket to fit it securely in your 2008 F-250’s tray. The dual SAE and GM posts give you flexibility for wiring accessories. While 720 CCA is slightly lower than some competitors (760-850), the pure lead design delivers reliable cranking in cold weather. For a truck that sees serious off-road or vibration, the RedTop is hard to beat.

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• BATTERY SPECS: 12-Volt, 720 Cold Cranking Amps, Size: 9.38" Long x 6.81" Wide x 7.75" Tall, Weight: 33.1 pounds, Dual SAE & GM Posts, C20 Capacity: 44 AH
• RESERVE CAPACITY of 90 minutes for constant performance. Faster charging capabilities.
• SPIRALCELL TECHNOLOGY: SPIRALCELL TECHNOLOGY with 99.99% pure lead delivers more power and consistently outperforms conventional flat-plate batteries. Optimal starting power even in bad weather.
• LONG LASTING: Fifteen times more resistant to vibration than standard flooded battieres for durability and Up to 3 times longer life vs. standard flooded batteries.
• MAINTENANCE FREE: for maximum convenience. Ideal for basic electrical demands.

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Weize Platinum AGM Group 94R – Higher CCA & Reserve for Heavy Duty

This Weize Platinum AGM battery steps up to group 94R (H7 size) with an impressive 850 CCA and 140 minutes of reserve capacity. For a 2008 F-250 6.4 diesel, that extra cranking power can make a real difference on the coldest mornings when the oil is thick and glow plugs are working hard. The 80Ah capacity gives you more sustained power for running a snow plow, lights, or a winch without excessive voltage drop.

Dimensions are 12.4 x 6.89 x 7.48 inches, so it’s longer than a group 48 battery. You’ll need to confirm that your battery tray accommodates this larger size—many Super Duty trucks have room for a group 94R, but not all. The tapered terminals are left negative, right positive, matching OEM. With a 36-month warranty and very low self-discharge, this battery is built for long-term reliability. If your truck came with a group 65 or 94R originally, this is an excellent replacement.

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• ✅Batter dimensions: 12.4" L x 6.89" W x 7.48" H, Terminal: Tapered terminal (Left negative (-), Right positive (+)). ✅Please ensure to verify the dimensions and terminal position before making a purchase to guarantee compatibility with your vehicle to avoid any fitment issues.
• 140RC rating： Provides reliable performance and long service life, Up to 2 times the cycle life of conventional batteries. Nominal Voltage: 12V, Capacity: 80 Ah, CCA: 850A, Self Discharge: <8% after 90 days storage, Operating Temperature Range: -22°F~158°F, Acceptable Charging Current: 0～24 A, Charging Voltage: 14.4~15.0 V, Terminal:
• 80AH capacity: Delivers consistent power over time, Cycles more, and recharges faster than conventional batteries.
• 850 CCA: Ensures quick and reliable starting power.Delivers superior starting power in cold weather, and resists internal corrosion from heat.
• Advanced technology: Specially designed for vehicles with start-stop technology and accessories that demand greater power, Whether you drive a car, truck, or SUV, this 140RC 80AH 850CCA automotive start-stop battery is the perfect choice for reliability.
• Low maintenance and easy to install： Leak-proof and certified non-spillable design for safer maintenance-free power, Constructed for greater vibration resistance and enhanced durability.
• We aim for quality followed up with quality customer service. Size, cold cranking amps,terminal location,and battery type are key pieces to getting the right unit. please measure your old battery and compare the dimensions with this battery,if the measurements are the same,positive and negative poles are consistent,CCA is no big difference,and it will fit your vehicle.
• ✅ AGM automotive starter batteries are designed for Stop/Start applications that have higher electrical accessory loads or performance vehicles that require a higher CCA starting battery with improved cyclic abilityand are not suitable for deep-cycle use in solar projects or marine applications.

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PartCatalog OE Replacement Battery for Ford F-250 1999-2024

If you want a simple direct replacement without worrying about group sizes and terminal layouts, the PartCatalog battery claims to fit Ford F-250 Super Duty from 1999 through 2024. That includes your 2008 6.4 diesel. It’s marketed as an OE-quality battery designed to meet or exceed OEM standards. Sounds great, but the product listing doesn’t specify CCA, Ah, or group size—which is a red flag. You’re essentially buying a battery blind.

Given that your diesel requires around 700-800 CCA to start reliably, you need those numbers. The lack of specifications makes it impossible to recommend this battery with confidence. While it may physically fit and work okay in a gasoline F-250, the 6.4 diesel is notoriously hard on batteries. Without knowing its performance specs, you’re taking a risk. We’d suggest sticking with a battery that publishes clear CCA and RC ratings.

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• Includes 1 (One) Vehicle Battery
• Fits list of vehicles in image gallery fitment chart
• Exceptional Quality and Performance: This OE replacement vehicle battery is designed to meet, if not exceed, the performance and quality standards of the original equipment installed on your vehicle. Experience the same high-level performance as your original parts with this vehicle battery.
• Direct Replacement, No Fuss: This OE replacement vehicle battery is meticulously designed for your specific vehicle's make and model, promising a direct fit. Installation is as straightforward as it gets – no fuss, no complications. Experience a seamless replacement process, made to match the original part perfectly.
• Perfect Compatibility: Compatibility is key. Make sure to check our product specifications (in image gallery) to confirm that this OE replacement vehicle battery matches your vehicle's requirements. Get the perfect fit and optimal performance every time with our replacement parts.

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UPLUS YTX14AH-BS – Another Powersports Battery, Not for Trucks

Much like the earlier UPLUS YB14A-A2, this YTX14AH-BS is a 12V 12Ah AGM battery designed for ATVs, snowmobiles, and motorcycles. It delivers 210 CCA and has dimensions of 5.24 x 6.46 x 3.54 inches (height x width varies). Again, this is nowhere near sufficient for a 6.4L diesel truck. The cranking current required to turn over a large V8 diesel is many times what this battery can provide. Installing it would result in immediate voltage sag, poor starting, and likely failure within a few attempts.

The battery itself is well-constructed with a PP case for heat resistance and claimed 5-year lifespan. If you have a quad or a Polaris UTV, it might be a fine battery for that. But for your 2008 F-250, it’s simply the wrong tool. Please don’t be tempted by the low price—you need real starting power.

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• 🔋—Motorcycle battery YTX14AH-BS is a 12V 12Ah 210 Cold Cranking Amps (CCA) AGM (Maintenance Free) Battery.Dimensions: 5.24 inches x 3.54 inches x 6.46 inches.Weight: 9.5 Lbs Polarity: [+,-]
• 🔋—5 years using time: With 99,99% above-average high purity level and corrosion resistant micro crystal structure, which ensures that our battery have over 5 years lifetime
• 🔋—PP material: The battery is made of PP material, which has better heat resistance and stronger usability in high temperature environment than traditional ABS material, and is not easy to deform
• 🔋—Safe to use: YTX14AH-BS battery be adopt our patented alloy greatly improves the battery's corrosion resistance and leak-proof performance. Maintenance-free design make battery to use without adding acid and water to ensure your safe use
• 🔋— US local office: We have established offices and warehouses in US. If product have any problems, we can solve it for you in USA. We provide 15 months warranty , and we will reply to your email within 12 hours

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Yuasa 6N4-2A-4 – 6-Volt Battery for Vintage Motorcycles, Irrelevant for Your Truck

This Yuasa battery is a 6-volt, 4 amp-hour unit designed for small motorcycles, likely from the 1960s-70s. It is completely incompatible with any modern vehicle, let alone a 2008 Ford F-250 diesel that operates on a 12-volt electrical system. Even if you wired two in series, the capacity (4Ah) and size would be laughably inadequate. It’s a dry-charged battery that requires adding acid, so it’s not even maintenance-free.

We include this only to be thorough with the product list. You should not consider this for your truck. It belongs in a vintage Honda or Yamaha, not under the hood of a Powerstroke.

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• 6 Volt, 4 amp-hour battery
• Polypropylene case and cover has superior resistance to gasoline and oil, withstands extreme weather conditions
• Poly-seal terminal seal eliminates acid seepage reducing corrosion and extending battery life
• Dry-charged plates retain 70-80 percentage state of charge when initially filled with acid
• Dry battery – battery acid not included
• Fit type: Vehicle Specific

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Custom Battery Cables Kit for Ford F-250 2003-2007 6.0L – Close but Not for 6.4L

While this is not a battery, it’s a vital part of the starting system. The Custom Battery Cables kit is designed for 2003-2007 Super Duty trucks with the 6.0L Powerstroke, not the 2008 6.4L. The starter location and cable routing may differ between these engines. That said, if your 2008 F-250 uses a similar layout, this heavy-duty 2/0 gauge cable kit could dramatically improve cranking performance. Older cables corrode and develop resistance, which robs voltage from the starter.

The kit includes military-style terminals, anti-corrosion washers, and a 90-degree starter lug. It’s made in the USA with 100% copper wire meeting SAE specs. Upgrading your battery cables is often a smart move on these trucks, especially if you’re installing a new high-CCA battery. Just verify compatibility with your specific 2008 6.4 diesel before purchasing—contact the seller to confirm fitment.

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• Replace your corroded battery cables with an original kit frrom Custom Battery Cables. Proudly made in America. Family-owned business making hard-to-find cables for the automotive enthusiast since 2004. Don't be fooled by imported copies.
• 100% copper wire. Meets or exceeds SAE (Society of Automotive Engineers) specifications. Don't be fooled by inferior copper-clad aluminum wire (CCA) or stereo shop OFC. Use only SAE approved wire. Inferior wires may not be oil, chemical, and heat resistant.
• Heavy 2/0, SAE approved, SGX, high temp, battery to starter wire for easier cranking. Heavy 2/0, SAE approved, battery-to-battery wire for improved conductivity. Heavy 2/0, SAE approved, battery-to-engine negative wires for improved grounding. Military terminals, terminal covers, anti-corrosion washers, wire loom, and zip ties included. 90-degree starter lug for stock style starters 6 ga chassis grounds for improved grounding.
• Includes Patent Pending design elements.
• Satisfaction guaranteed. We have been in business for 20 years because we build a great product and we stand behind our work.
• These cables will NOT defeat, bypass or shut down emission control devices.

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Buyer’s Guide: What to Consider

Choosing the right battery for your 2008 Ford F-250 6.4 diesel isn’t just about picking any 12-volt battery that fits. The starting demands of a Powerstroke, combined with your driving conditions and accessory loads, require careful consideration. Here are the key factors to keep in mind when shopping.

• Cold Cranking Amps (CCA): Your 2008 F-250 6.4 diesel needs at least 700-800 CCA to reliably start in cold weather. The heavy oil and high compression of a diesel demand strong cranking power. Look for batteries with 760 CCA or higher, especially if you live in northern climates.
• Group Size & Physical Fit: Measure your existing battery tray and check the terminal orientation. Common group sizes for this truck include 48 (H6), 65, and 94R (H7). The terminal layout must match your cables—usually left negative, right positive. A wrong size can cause loose fit or short cables.
• Reserve Capacity (RC): Reserve capacity tells you how long the battery can run essential systems if the alternator fails. For a diesel truck with glow plugs and fuel system electronics, an RC of 120 minutes or more gives you extra safety margin. Higher is better for accessories like plows or winches.
• AGM vs Flooded Battery: AGM (Absorbent Glass Mat) batteries are sealed, maintenance-free, and more vibration-resistant than traditional flooded batteries. They also have lower self-discharge. For a work truck that sees rough roads or infrequent use, AGM is worth the higher upfront cost. Flooded batteries are cheaper but require periodic water checks.
• Terminal Type & Location: Most Ford Super Duty trucks use top-post terminals with a standard SAE taper. Confirm the positive and negative positions match your existing cables. Some batteries offer dual posts (SAE plus side terminals) for easy accessory connections. Custom battery cables can also improve terminal fit.
• Warranty & Brand Reputation: A longer warranty (36 months or more) usually indicates better build quality. Brands like Weize, OPTIMA, and UPLUS offer solid warranties. Be wary of generic batteries without published specs. A reputable brand with good support is worth the investment for a vehicle that relies on reliable starts.
• Vibration Resistance & Durability: The 6.4L Powerstroke produces significant vibration, and work trucks often drive on unpaved roads. AGM batteries with robust internal construction (like OPTIMA's SpiralCell) resist vibration much better than flooded batteries. This extends battery life and prevents internal short circuits.

Conclusion

After reviewing all ten products, the best choices for your 2008 F250 6.4 diesel are the Weize Platinum AGM Group 48 and the Weize Platinum AGM Group 94R. Both deliver excellent CCA, high reserve capacity, and come with a 36-month warranty. The Group 94R offers more power for extreme cold or heavy accessories, but check fitment first. The UPLUS Group 48 AGM is a close runner-up at a slightly lower price point, and the OPTIMA RedTop is ideal if you need top-tier vibration resistance.

Don’t forget that upgrading your battery cables (like the Custom Battery Cables kit if compatible) can further improve starting performance by reducing voltage drop. Avoid the smaller powersports batteries—they simply can’t handle the job. Invest in a high-quality AGM battery with 760+ CCA, and your 6.4 Powerstroke will start reliably for years to come.