​Car Battery Replacement

​When Should I Change My Car Battery?

A typical lead-acid car battery lasts between 3 to 5 years, while AGM (Absorbent Glass Mat) batteries often last 5 to 8 years. However, battery life can vary depending on your driving habits, climate, and how well the vehicle is maintained.

 

You should consider replacing your battery when:

• Your engine struggles or is slow to start

• You need frequent boosts

• Your electronics flicker or perform inconsistently

 

One of the most important factors is CCA (Cold Cranking Amps)—this measures your battery’s ability to start your engine in cold conditions. If the battery’s CCA drops below your engine’s requirement, you’ll notice delayed or failed starts, especially in winter. Cold temperatures naturally reduce a battery’s ability to generate current, which is why you may experience more problems during colder months.

 

What Type of Battery Should I Use?

Always use the manufacturer-recommended battery type for your vehicle.

• Most commuter vehicles (like Hondas or Toyotas) typically use standard lead-acid batteries

• Modern European vehicles (such as BMW, Audi, or Mercedes-Benz) usually require OEM-spec AGM batteries, often larger in size (e.g., Group H8)

 

At MobileBattery, we only install OEM-spec batteries, especially for modern German vehicles. These cars are built with power-hungry electronic systems that require consistent, high-capacity power to operate reliably. Using the wrong battery can reduce performance or damage electronic components.

 

How Do I Change My Car Battery?

Note: We always recommend testing your battery before replacing it. Sometimes the issue may be with the starter, alternator, or loose connections, not the battery itself.

 

Tools & Safety Gear You’ll Need:

• Safety glasses and gloves

• 10mm socket and ratchet (common for Japanese vehicles)

• Wire brush and corrosion spray

• A backup power source (optional, to save presets)

 

Steps to Replace Your Car Battery:

1. Locate the battery: Batteries can be found under the hood, in the trunk, or even under the rear seat (especially in German cars).​

 

2. Save presets (optional): Connect a memory saver to keep your radio, sunroof, and power window presets. This step isn’t necessary if the battery is already completely dead.

 

3. Disconnect the battery:

• Remove the negative (-) cable first

• Then remove the positive (+) cable

• Remove the tie-down bracket or clamp

 

4. Remove the old battery and set it aside safely. Cover terminals if possible.

 

5. Clean the cable terminals with a wire brush and apply corrosion protection spray.

 

6. Install the new battery:

• Place the battery in securely

• Connect the positive cable first, then the negative

• Reinstall the hold-down bracket

• Double check connections and torque to your manufacturer’s specs (check your owner’s manual)

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7. Register the battery (if required):
Some vehicles—especially BMW, Audi, and Mercedes—require battery registration using a scan tool. This step ensures your vehicle's control module charges the battery correctly. Skipping this can lead to premature battery failure.

 

8. Test the alternator:
Start the car and check the voltage. Most healthy charging systems operate between 13.5V and 14.5V. If your voltage reads 12.8V or lower, your alternator may not be charging properly.

 

Why Choose MobileBattery?

We bring the full auto shop experience directly to you—fast, easy, and professional.

 

What Sets Us Apart:

1. Same-Day Service
   Get your battery replaced on the same day—at home, work, or roadside.

2. On-Site Warranty
   We back our batteries with a full on-site warranty, so you’re covered wherever you are.

3. Trusted Brands Only
   We install only high-performance, OEM-spec batteries for maximum reliability.

4. Certified Technicians
   No tools? No time? No problem. Our certified experts handle the full installation for you.

 

At MobileBattery, we believe car battery replacement should be simple, fast, and worry-free. Whether you're driving a compact car or a luxury SUV, we'll make sure your vehicle gets the power it needs—wherever you are.

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Check pricing and availability at bookonline.mobilebattery.ca.