Best Group 78 Battery Agm for Cars and Trucks

#1 · Best Overall

1. Interstate MTX-78

• Dimensions: 7.31"D x 10.94"W x 7.24"H
• Weight: 41.3 lb
• Voltage: 12 V

Best for: Broad Group 78 replacement fit.

Why it ranks #1: Explicitly identified as Group 78, it lists 740 CCA, 55Ah, vehicle compatibility for cars, trucks, and vans, and a 36-month warranty.

Group 78 sizing is the Interstate MTX-78’s clearest practical advantage: the listing says it fits more than 2,000 year, make, and model applications, giving replacement shoppers a broad starting point. Its 740 CCA and AGM construction add substantial starting output for passenger cars, trucks, and vans, subject to vehicle fit.

The 12-volt, 55Ah AGM battery combines 740 cold cranking amps with power for vehicle accessories and plug-ins, addressing both starting demands and everyday electrical use. Its stated 7.31-by-10.94-by-7.24-inch dimensions and Group 78 designation help shoppers compare the battery with the available tray and terminal arrangement before installation. At 41.3 pounds, it is a substantial replacement to handle, and the product listing recommends checking vehicle compatibility with Amazon’s Confirmed Fit Tool.

Skip it if you need dual-purpose deep-cycle performance for accessory-heavy use; the OPTIMA D34/78 YELLOWTOP listing specifically describes cycling capability.

For a Group 78 replacement shopper seeking 740 CCA and AGM power for a passenger car, truck, or van, this Interstate is a broad-fit option. Check the stated dimensions and Confirmed Fit result before choosing it.

Listed on Amazon as: Interstate Batteries Car Battery 12V 55Ah 740CCA Group 78 AGM

#2 · High CCA

2. Odyssey ODX-AGM78

• Weight: 16 oz
• Voltage: 12 V

Best for: High-cranking emergency readiness.

Why it ranks #2: This Group 78 battery lists 850 CCA, 1250 HCA, 1500 PHCA, and 135 minutes of reserve capacity for demanding starting needs.

The Odyssey ODX-AGM78 pairs 850 CCA with 1500 PHCA, giving drivers two prominent cranking figures to weigh for everyday or emergency use. Its 135-minute reserve capacity adds another practical reference for sustained power, while the Group 78 terminal details help guide installation planning.

Odyssey lists 850 CCA, 1250 HCA, and 1500 PHCA, figures that frame its starting capability across different measures. The 135-minute reserve capacity also gives buyers a concrete basis for considering power availability between charging opportunities. Its negative terminal is on the right, and the Group 78 battery uses 3/8-inch threaded side receptacles; checking those connection details against the vehicle helps avoid an installation mismatch. This is a 12-volt battery, and the listing identifies everyday and emergency use.

Skip it if you need explicitly listed dual-purpose cycling for accessory loads; the OPTIMA D34/78 YELLOWTOP is described as a starting and deep-cycle battery.

This Odyssey suits drivers prioritizing multiple starting ratings and reserve capacity for everyday or emergency use. Confirm that its right-side negative terminal and 3/8-inch threaded side receptacles match the vehicle’s connection layout.

Listed on Amazon as: Odyssey Battery ODX-AGM78 Extreme Series AGM Battery

#3 · Longest Warranty

3. ACDelco Gold 78XAGM

• Dimensions: 10.86"D x 7.08"W x 7.34"H
• Weight: 49.5 lb
• Voltage: 12 V DC

Best for: Durability-focused Group 78 replacement.

Why it ranks #3: The Group 78 AGM listing specifies 12V power and a 48-month limited warranty, along with construction details intended to support cycling and service life.

The ACDelco Gold 78XAGM combines high-density plate construction with a puncture-resistant envelope separator, two concrete construction details aimed at dependable automotive service. Its 12-volt Group 78 AGM designation and stated fit for passenger cars make it a focused replacement option for demanding use.

ACDelco says high-density negative paste supports performance, battery life, and cycle life, linking its construction to repeated vehicle use. A puncture-resistant envelope separator promotes acid circulation and helps prevent shorts, while a leak-resistant pressurized valve system adds another specified protection feature. The 10.86-by-7.08-by-7.34-inch dimensions and 49.5-pound weight matter when checking tray space and planning installation. ACDelco positions Gold as a high-quality OE alternative for GM vehicles and more.

Skip it if you need published cranking and reserve numbers for comparison; the Odyssey ODX-AGM78 lists 850 CCA and 135 minutes of reserve.

This ACDelco Gold suits passenger-car owners seeking a Group 78 AGM with specified separator and valve-system features. Check the vehicle’s physical and electrical requirements, since the supplied listing does not give CCA or reserve figures.

Listed on Amazon as: ACDelco Gold Automotive Battery 78XAGM | PN 88866070

#4 · Cold-Weather Starting

4. Optima 78 RedTop

• Dimensions: 7.25"D x 10"W x 7.19"H
• Weight: 39.5 lb
• Voltage: 12 V

Best for: High-output starting in harsh weather.

Why it ranks #4: Its Group 78 listing provides 800 CCA, a 100-minute reserve capacity, and a stated 36-month guarantee for a starting-focused application.

The OPTIMA REDTOP’s 800 cold cranking amps are its defining concrete advantage, supporting strong starting output when weather is harsh. Its sealed AGM design uses SpiralCell technology with 99.99% pure lead, making this Group 78 battery a focused choice for drivers prioritizing cranking power.

SpiralCell construction and 99.99% pure lead are presented as the basis for more power than conventional flat-plate batteries, while the 800 CCA rating addresses high-demand starts. The listing also specifies a 50Ah C20 capacity and 100-minute reserve, giving buyers a reference for sustained power between charging opportunities. GM-style side terminals and a 10.06-by-7.31-by-7.25-inch stated size make terminal layout and physical clearance important checks before installation.

Skip it if you need a dual-purpose battery for high-demand accessories and cycling; the OPTIMA D34/78 YELLOWTOP is specifically described for that use.

Choose this REDTOP if high cranking output and starting in difficult weather matter more than dual-purpose cycling. Its GM-style side terminals and stated dimensions should suit the vehicle’s layout before you commit.

Listed on Amazon as: OPTIMA® Batteries High Performance 78 REDTOP® Sealed AGM Battery

#5 · Highest Capacity

5. XS Power D3478

• Weight: 55.8 lb
• Voltage: 12 V

Best for: High-demand car audio builds.

Why it ranks #5: The Group 78 AGM lists 80Ah capacity, 1150CA, and included M6 terminal bolts, making its specifications relevant to audio and performance builds.

An 80Ah capacity distinguishes the XS Power D3478 among these Group 78 options, giving car-audio and performance-car shoppers a substantial stated capacity to consider. This 12-volt AGM battery also lists 1150 CA and includes M6 terminal bolts, pairing its electrical figures with specified connection hardware.

The listing positions this D Series AGM for car audio systems and performance cars, while its 80Ah capacity and 1150 CA provide concrete figures for buyers comparing power needs. M6 terminal bolts are included, which gives installers the specified hardware for those connections rather than leaving the terminal accessory unspecified. The battery is listed at 55.8 pounds, so handling and positioning require attention. Its polarity is stated as left, making orientation a key installation consideration.

Skip it if you want a lighter listed Group 78 AGM; the OPTIMA 78 REDTOP is listed at 39.5 pounds and specifies 800 CCA.

For car-audio or performance-car owners comparing high-capacity AGM options, the D3478 offers 80Ah and included M6 bolts. Its weight and left polarity make handling and installation orientation important fit considerations.

Listed on Amazon as: XS Power D3478 3300 Amp AGM Battery with M6 Terminal Hardware – Group 78 12V 80Ah 1150CA Deep Cycle AGM Powercell for Car Audio Systems and Performance Cars

#6

6. Odyssey Performance AGM78

• Dimensions: 6.8"D x 6.8"W x 7.9"H
• Weight: 49.5 lb
• Voltage: 12 V

Best for: Deep-cycle-capable performance drivers.

Why it ranks #6: The Performance Series listing identifies AGM and 12V, with side threaded terminals and a stated three-year manufacturer warranty.

Odyssey identifies this Performance Series AGM as having deep-cycle capabilities, giving it a clear role for passenger-car owners considering more than starting alone. The 12-volt battery’s title also lists 1500 cranking amps and side threaded terminals, useful details when assessing power and connection needs.

Deep-cycle capability and a stated 1500 cranking amps address two different buyer concerns: sustained use and starting output. The side threaded terminals specify a connection style that must match the vehicle, while the product title gives dimensions of 10.80 inches long, 6.80 inches wide, and 7.40 inches high for space planning. The listing also describes long service life and high reliability, though it does not provide a reserve-capacity figure for estimating sustained power.

Skip it if you require a published reserve-capacity figure; the Odyssey ODX-AGM78 lists 135 minutes alongside its cranking ratings.

This Performance Series Odyssey is suited to passenger-car owners seeking deep-cycle capability alongside a listed 1500 cranking amps. Check its side-threaded terminal style and stated dimensions against the vehicle before installation.

Listed on Amazon as: Odyssey Battery, Performance Series, AGM, 12V, 1500 Cranking amps, Side Threaded Terminals, 10.80 in L x 7.40 in H x 6.80 in W, Each

#7

7. ACDelco Silver 78SAGM

• Weight: 41.9 lb

Best for: GM-oriented replacement shoppers.

Why it ranks #7: This is explicitly a Group 78 AGM battery, described as suitable for GM vehicles and most makes and models, with a stated 24-month warranty.

ACDelco’s stated focus on General Motors vehicles gives the Silver 78SAGM a clear place in a replacement search, while the listing also identifies it as suitable for most makes and models. Its Group 78 AGM designation helps shoppers narrow options when looking for this battery type and size.

The product is identified as an ACDelco Silver AGM BCI Group 78 battery, so shoppers seeking that form of replacement can compare its designation with their vehicle’s requirements. ACDelco describes Silver as a high-value option for GM vehicles and most makes and models, connecting the brand positioning to a broad replacement audience. The listing provides a model number and part number, but does not supply capacity, CCA, dimensions, or terminal details here; verify those specifications for your vehicle before purchase.

Skip it if you need published cold-cranking and reserve figures; the OPTIMA 78 REDTOP listing provides 800 CCA and 100 minutes of reserve capacity.

This suits GM owners and other drivers whose vehicle calls for an ACDelco Silver Group 78 AGM replacement. Because the supplied listing omits key electrical and dimensional figures, establish those requirements before selecting it.

Listed on Amazon as: ACDelco Silver 78SAGM (88866331) 24 Month Warranty AGM BCI Group 78 Battery

#8

8. Optima D34/78 YellowTop

• Dimensions: 6.88"D x 10"W x 7.81"H
• Weight: 43.5 lb
• Voltage: 12 V

Best for: Accessory-heavy dual-purpose vehicles.

Why it ranks #8: Its dual-purpose AGM design offers 750 CCA, 55Ah, and 120 minutes of reserve capacity, but its listed size is Group 34/78 rather than solely Group 78.

The OPTIMA YELLOWTOP is explicitly described as a true dual-purpose automotive battery, combining 750 CCA with cycling capability for accessory-loaded vehicles. Its 120-minute reserve capacity and dual SAE and GM terminals make it especially relevant to shoppers balancing starting power with additional electrical demands.

SpiralCell technology with 99.99% pure lead is presented as delivering more power than conventional flat-plate batteries, while the 55Ah C20 capacity and 120-minute reserve give buyers concrete capacity and reserve figures. OPTIMA identifies trucks with winches, vehicles with high-demand audio, and commercial vehicles as suitable applications. The 750 CCA rating supports starting needs, and dual SAE and GM terminals offer two terminal styles; its 43.5-pound weight matters when handling.

Skip it if you only need a starting-focused Group 78 battery; the OPTIMA 78 REDTOP provides 800 CCA and is described as a starting battery.

This is a strong match for an accessory-loaded car, truck, or commercial vehicle needing cranking and cycling capability. Account for its 43.5-pound weight and check the listed dimensions and terminal arrangement against the vehicle.

Listed on Amazon as: OPTIMA® Batteries High Performance D34/78 YELLOWTOP® Sealed AGM Battery

#9

9. Deka 9A78DT

• Voltage: 12 V

Best for: Deka Group 78 AGM shoppers.

Why it ranks #9: The title identifies an AGM Intimidator battery and model 9A78DT, but the supplied listing gives only 12V and lacks fit, capacity, and cranking details.

The Deka 9A78DT is identified by name as an AGM Intimidator battery, with a 12-volt specification and model number that make its basic type clear. For shoppers narrowing a replacement search to Deka and Group 78, those identifiers provide a starting point for checking vehicle requirements.

The supplied specifications identify the brand as East Penn, the model as 9A78DT, and the voltage as 12 volts. The title calls it an AGM Intimidator battery, providing the battery type, while the model number helps distinguish it within Deka’s lineup. However, this listing supplies no CCA, capacity, reserve, dimensions, or terminal details, so buyers cannot use the provided information alone to compare starting output or confirm physical and connection fit.

Skip it if you need stated cranking and terminal specifications before deciding; the Odyssey ODX-AGM78 lists 850 CCA and threaded side receptacles.

This may suit shoppers specifically seeking a Deka 9A78DT AGM, but the supplied facts cover only basic identification and voltage. Obtain the vehicle’s required electrical, dimensional, and terminal specifications before treating it as a fit.

Listed on Amazon as: Deka 9A78DT AGM Intimidator Battery

#10

10. Part Synergy Odyssey Group 78

• Weight: 52 lb

Best for: OE-style replacement installation.

Why it ranks #10: Although the title claims Group 78 and lists 850 CCA and 1500 PHCA, the listing is from Part Synergy and specifies only a 30-day return period.

The listing emphasizes direct OE replacement and fitment without modifications, making this Odyssey Extreme Series Group 78 option relevant to shoppers seeking a straightforward factory-style installation. It also states 850 CCA and 1500 PHCA, providing concrete starting figures for a 12-volt replacement.

The stated direct-fit compatibility and no-modification installation claim are intended to minimize installation time, while the product’s 10.9-by-6.8-by-7.3-inch dimensions offer a reference for checking available space. Its 850 CCA and 1500 PHCA figures help buyers assess starting output, and the 3/8-inch threaded side terminal identifies the connection style. At 52 pounds, it requires careful positioning. The listing describes it as tested for reliable performance and accurate fitment.

Skip it if you need a listed reserve-capacity figure for sustained-power planning; the Odyssey ODX-AGM78 specifies 135 minutes.

This suits a DIYer or professional seeking an OE-style Group 78 replacement with stated cranking figures and threaded side terminal. Verify the vehicle’s terminal layout and available space, and plan for its 52-pound weight.

Listed on Amazon as: Odyssey Extreme Series Battery – Group 78 12V | 850 CCA and 1500 PHCA | 3/8-Inch Threaded Side Terminal – 10.9×6.8×7.3-Inch Durable Power Solution