Battery Size Group H4 AGM

H4 AGM Battery (Group H4): Reliable Power & Advanced Performance for Canadian Vehicles

The H4 AGM battery (also known as Group H4 AGM or L1 AGM) is a high-performance, maintenance-free battery designed specifically for compact and mid-sized vehicles that demand dependable starting power and strong electrical support—especially important in harsh Canadian winters.

AGM stands for Absorbent Glass Mat, an advanced battery technology that offers excellent cold-cranking performance, improved vibration resistance, and longer service life compared to traditional flooded batteries.

H4 AGM Battery Size, Specs, and Average Cost in Canada

An H4 AGM battery is a compact, 12-volt automotive battery measuring about:

• Length: 8.15 inches (207 mm)

• Width: 6.90 inches (175 mm)

• Height: 7.50 inches (190 mm)

Typical performance specs for an H4 AGM battery are:

• Cold Cranking Amps (CCA): 480 to 600

• Cranking Amps (CA): 600 to 750

• Reserve Capacity (Minutes): typically 80–100 mins

• Amp-Hour (Ah): 40 to 55Ah

In Canada, an H4 AGM battery typically costs between $200 and $280, depending on the brand and warranty coverage. Most AGM batteries include a 3-year free replacement warranty, ideal for reliable year-round performance.

Common Vehicles That Use H4 AGM Batteries

H4 AGM batteries are commonly used in compact to mid-size European and some Asian vehicles, particularly those featuring advanced electronics or stop-start systems. Examples include:

• Volkswagen Golf, Jetta (newer models)

• Audi A3

• BMW 1-Series (select trims)

• Mercedes-Benz CLA250, GLA250 (certain trims)

• Mini Cooper (recent models)

• Fiat 500 and 500X

• Mazda3 with i-Stop technology

Not sure if your vehicle requires an H4 AGM battery? Check your owner’s manual or visit our Car Battery Replacement page for assistance.

Alternative Battery Sizes for H4 AGM

If an H4 AGM battery isn't immediately available, these sizes might serve as suitable alternatives—but always confirm fitment, tray size, and electrical compatibility first:

• Group H5 AGM (47 AGM) – Slightly larger, more capacity Dimensions: 9.56" x 6.94" x 7.5"

• Group H6 AGM (48 AGM) – Larger, more powerful; tray must accommodate Dimensions: 11.0" x 6.9" x 7.5"

• Group 96R AGM – Similar width and height, slightly longer Dimensions: 9.6" x 6.9" x 6.9"

Always verify terminal layout and space availability before choosing another size. Need help? Check out How It Works.

Signs Your H4 AGM Battery Needs Replacement

AGM batteries typically last longer, but here are signs yours might need replacement soon:

1. Engine slow to start, especially in cold weather

2. Dashboard battery warning light or electronic warnings

3. Battery voltage drops below 12.4V when parked, or below 9.6V at startup

4. Reduced start-stop system function (if equipped)

If you’d prefer professional testing, MobileBattery offers mobile battery diagnostics and replacement across Canada, including Vancouver, Calgary, and Toronto.

H4 AGM Battery Lifespan in Canadian Conditions

Thanks to advanced technology, an H4 AGM battery typically lasts between 4 to 6 years in Canadian climates—slightly longer than traditional flooded batteries. However, extreme cold, frequent short trips, or heavy electrical accessory use can shorten battery life. Regular battery checks after four years are recommended to ensure reliable performance.

To see if we service your location, visit our Where We Service page.

Need an H4 AGM Battery Replacement?

Book online now at bookonline.mobilebattery.ca for fast, professional H4 AGM battery delivery and installation—right at your home, office, or roadside anywhere in Canada.