Battery Size Group H8 AGM

H8 AGM Battery (Group 49 AGM): Powerful Performance for Canada’s Toughest Conditions

The H8 AGM battery (also known as Group 49 AGM) is one of the largest and most powerful automotive batteries available, specifically engineered to handle high electrical demands, advanced electronics, and extreme Canadian weather. Utilizing Absorbent Glass Mat (AGM) technology, this battery delivers superior starting power, excellent reliability, and significantly longer lifespan than standard flooded batteries.

If you drive a large SUV, premium sedan, diesel truck, or performance vehicle, the H8 AGM battery is a perfect fit, offering exceptional power and dependability in every season.

H8 AGM Battery Specs, Dimensions, and Price in Canada

The H8 AGM battery is a heavy-duty, 12-volt battery featuring top-mounted terminals. Its typical dimensions are:

• Length: 13.90 inches (353 mm)

• Width: 6.90 inches (175 mm)

• Height: 7.50 inches (190 mm)

Common performance specifications:

• Cold Cranking Amps (CCA): 800 to 950

• Cranking Amps (CA): 950 to 1100

• Reserve Capacity (Minutes): 150 to 180 mins

• Amp-Hour (Ah): 80 to 95Ah

In Canada, you can expect the price of an H8 AGM battery to range between $290 to $400, depending on brand, warranty, and performance ratings. Most premium brands offer a solid 3- to 4-year free replacement warranty, ideal for peace of mind.

Vehicles That Commonly Use H8 AGM Batteries

The H8 AGM battery is popular among larger vehicles and premium models that require maximum electrical performance and reliability, including:

• Mercedes-Benz GL-Class, S-Class, ML/GLE-Class

• BMW 5-Series, 7-Series, X5, X6

• Audi Q7, A8

• Volkswagen Touareg, Atlas (select trims)

• Porsche Cayenne, Panamera

• Jeep Grand Cherokee (higher trims)

• Land Rover Discovery, Range Rover Sport

• Ford F-150, Expedition (certain trims)

• Dodge Ram (newer diesel models)

• Chevrolet Silverado, GMC Sierra (diesel or luxury trims)

Not sure if your vehicle requires an H8 AGM battery? Visit our Car Battery Replacement or Truck Battery Replacement pages for guidance.

Alternative Battery Sizes for H8 AGM

If an H8 AGM battery is unavailable, here are some potential alternatives. Always ensure dimensions and terminal layouts match your vehicle requirements before purchasing:

• H7 AGM (Group 94R AGM) – Slightly shorter length, suitable if space is limited Dimensions: 12.40" x 6.90" x 7.50"

• Group 31 AGM – Similar high-performance option, slightly different footprint Dimensions: 13.0" x 6.75" x 9.44"

• H6 AGM (Group 48 AGM) – Smaller overall; fits some vehicles with adjustments Dimensions: 11.0" x 6.90" x 7.50"

Need help choosing the right battery? Visit our How It Works page for detailed assistance.

Signs Your H8 AGM Battery Needs Replacement

While AGM batteries are reliable, watch for these signs of potential failure:

1. Slow engine starts or hesitation, especially in cold temperatures

2. Dashboard battery or charging warning lights

3. Reduced performance of vehicle electronics or start-stop systems

4. Voltage dropping below 12.4V at rest, or below 9.6V during startup

For professional battery testing and advice, MobileBattery offers convenient mobile testing and installation throughout Canada, including Toronto, Vancouver, and Calgary.

H8 AGM Battery Lifespan in Canadian Conditions

The average lifespan of an H8 AGM battery in Canada is between 4 to 6 years, depending on usage patterns and maintenance. Harsh winters, frequent short trips, or heavy use of electrical accessories (heated seats, navigation systems, etc.) can shorten battery life. Annual battery testing is recommended once the battery surpasses the four-year mark.

To check if MobileBattery serves your area, visit our Where We Service page.

Need an H8 AGM Battery Replacement?

Book online now at bookonline.mobilebattery.ca for fast, expert H8 AGM battery installation—available at your home, office, or roadside anywhere in Canada.