Battery Size Group H9 AGM

H9 AGM Battery (Group 95R AGM): Maximum Power & Reliability for Canadian Vehicles

The H9 AGM battery (Group 95R AGM) is one of the largest and most powerful automotive batteries on the market, specifically designed for vehicles with high electrical demands. Using advanced Absorbent Glass Mat (AGM) technology, the H9 AGM delivers outstanding starting power, exceptional reliability, and extended life—perfect for handling tough Canadian winters and the demands of premium luxury cars, SUVs, and high-performance vehicles.

H9 AGM Battery Specs, Dimensions, and Price in Canada

The H9 AGM battery is a heavy-duty, 12-volt, maintenance-free battery with top-mounted terminals, typically measuring:

• Length: 15.56 inches (394 mm)

• Width: 6.94 inches (175 mm)

• Height: 7.50 inches (190 mm)

Typical specifications include:

• Cold Cranking Amps (CCA): 850 to 950

• Cranking Amps (CA): 1000 to 1100

• Reserve Capacity (Minutes): 160 to 200 mins

• Amp-Hour (Ah): 90 to 105Ah

In Canada, you can expect an H9 AGM battery to cost approximately $320 to $450, depending on brand, warranty, and specific performance ratings. Most premium AGM batteries include a robust 3- to 4-year free replacement warranty.

Vehicles That Commonly Use H9 AGM Batteries

The H9 AGM battery is commonly installed in premium, luxury, and high-performance vehicles, particularly those requiring maximum electrical performance or equipped with start-stop technology, including:

• Mercedes-Benz GLS-Class, G-Class, S-Class (higher trims)

• BMW X5, X6, 7-Series (premium trims)

• Audi Q7, A8, RS-series

• Porsche Cayenne, Panamera, Macan

• Range Rover (select models)

• Volkswagen Atlas (higher trims)

• Jeep Grand Cherokee (top trims with advanced electronics)

• Dodge Durango (luxury/high-performance trims)

• Ford Expedition, F-150 Limited or Platinum trims

• GMC Yukon Denali, Cadillac Escalade

If you're uncertain whether your vehicle requires an H9 AGM battery, visit our Car Battery Replacement or Truck Battery Replacement pages, or refer to your owner's manual.

Alternative Battery Sizes for H9 AGM

If an H9 AGM battery isn’t available immediately, here are some alternatives—but confirm dimensions, tray compatibility, and terminal orientation carefully:

• H8 AGM (Group 49 AGM) – Slightly smaller, still powerful Dimensions: 13.90" x 6.90" x 7.50"

• Group 31 AGM – High capacity, different shape; may fit some vehicles Dimensions: 13.0" x 6.75" x 9.44"

• H7 AGM (94R AGM) – Smaller length; suitable for some vehicles with tray adjustments Dimensions: 12.40" x 6.90" x 7.50"

Always verify fitment and electrical requirements. For additional guidance, visit our How It Works page.

Signs Your H9 AGM Battery Needs Replacement

While AGM batteries provide long-lasting reliability, watch for these common signs of a failing battery:

1. Slow engine cranking, especially noticeable in cold weather

2. Dashboard battery or check engine warning lights

3. Reduced or erratic function of vehicle electronics

4. Voltage falling below 12.4V at rest or below 9.6V when starting

Prefer professional help? MobileBattery offers convenient mobile battery testing and replacement across Canada, including in Toronto, Montreal, and Vancouver.

H9 AGM Battery Lifespan in Canadian Conditions

Thanks to advanced AGM technology, an H9 AGM battery typically lasts between 4 to 6 years in Canadian driving conditions. However, harsh weather, frequent short trips, and high accessory use can shorten battery life. Annual battery testing after four years is recommended, especially before the winter season.

Check our Where We Service page to confirm service in your area.

Need an H9 AGM Battery Replacement?

Book online now at bookonline.mobilebattery.ca for professional H9 AGM battery replacement—available right at your home, workplace, or roadside across Canada.