Battery Size Group 40R

Group Size 40R Battery: A Compact Fit for Modern Imports in Canada

The Group Size 40R battery is a compact, high-performance option found in many modern sedans and compact SUVs—especially from European and Japanese brands. While not as commonly seen as Group 35 or 24F, the 40R is designed for vehicles that need strong cold-starting performance in a compact footprint with a reversed terminal layout.

If your car calls for a 40R, it’s important to choose the right size and spec to avoid electrical or mounting issues—especially in Canada where winter performance really matters.

Battery Size, Specs, and Cost in Canada

The Group 40R battery is a 12-volt model and typically measures about 10.94 inches long, 6.89 inches wide, and 6.89 inches high. It’s smaller in height than many common batteries but still delivers solid power output.

Typical specs include:

• Cold Cranking Amps (CCA): 500 to 650

• Cranking Amps (CA): 600 to 800

• Amp-Hour (Ah): 50 to 60Ah

In Canada, Group 40R batteries usually cost between $160 and $240, depending on the brand, warranty, and whether you choose a flooded or AGM style. Most come with a 2- to 3-year free replacement warranty.

Vehicles That Commonly Use Group 40R Batteries

The Group 40R battery is most often found in compact sedans and crossover SUVs, especially:

• Honda Civic (select models 2016+)

• Honda CR-V (select trims)

• Hyundai Elantra (recent models)

• Kia Forte

• Volkswagen Jetta and Golf (some trims)

If you're not sure what battery your vehicle takes, check your owner’s manual or visit our Car Battery Replacement page for a quick lookup.

Alternative Battery Sizes for Group 40R

If you can’t find a Group 40R battery in stock, a few other group sizes might fit—just confirm tray size, terminal position, and cable length:

• Group 35 – Similar in height, slightly smaller footprint Dimensions: 9.06" x 6.88" x 8.88"

• Group 51R – Narrower and shorter, but often used as a substitute Dimensions: 9.37" x 5.06" x 8.75"

• Group H5 – European equivalent, slightly wider Dimensions: 9.56" x 6.94" x 7.5"

Need help confirming fitment? Learn more about how our mobile service works or speak with one of our techs before switching sizes.

Signs Your Group 40R Battery Needs Replacing

Batteries often show warning signs before they fail. Here’s what to watch for:

1. Slower engine start

2. Flickering or dim headlights

3. Battery light on your dashboard

4. Voltage reading below 12.4V when off, or under 9.6V when starting

Not sure how to test it? MobileBattery offers on-site battery testing and replacement across Canada, including Vancouver, Calgary, and Toronto.

Battery Lifespan in Canada

The average lifespan of a Group 40R battery in Canada is 3 to 5 years. Cold winters, lots of short trips, and stop-and-go driving can shorten battery life. After year three, it’s wise to get your battery tested annually—especially before winter.

To check if we serve your area, visit our Where We Service page.

Need a Group Size 40R Battery Replacement?

Book online now at bookonline.mobilebattery.ca for fast, professional Group 40R battery service delivered right to your home, office, or roadside—anywhere in Canada.