Energised Q85 EFB Stop-Start Battery – Mazda & Subaru Battery Replacement on the Gold Coast

Modern vehicles are becoming more advanced every year, and one of the biggest changes has been the introduction of stop-start technology.

If your Mazda or Subaru automatically switches the engine off when you stop at traffic lights or in traffic, there is a good chance your vehicle requires a specialised EFB (Enhanced Flooded Battery) rather than a conventional car battery.

At Battery Gold Coast, we supply and install the Energised EFB Q85 HD, a heavy-duty stop-start battery designed for vehicles that require Q85/EFB battery technology.

We also provide battery programming after installation, which is extremely important on many modern vehicles.

What is an EFB stop-start battery?

EFB stands for Enhanced Flooded Battery.

Unlike a conventional battery, an EFB battery is specifically designed to cope with the repeated starting cycles created by modern stop-start systems.

Every time your vehicle stops at traffic lights and switches the engine off, the battery needs to provide power to the vehicle's electrical systems. When the vehicle starts again, the battery must deliver a strong burst of starting power and quickly recover its charge.

The Energised Q85 HD has been designed specifically for this type of application.

Energised Q85 HD specifications

• Battery type: EFB Stop-Start
• Voltage: 12V
• Capacity: 65Ah
• CCA: 650
• Reserve Capacity: 110 minutes
• Dimensions: 230mm × 172mm × 220mm
• Warranty: 24 months for private use
• Model: Q85 HD
• Technology: Enhanced Flooded Battery (EFB)

The Q85 is a common battery size used in a range of Japanese vehicles equipped with stop-start technology, including selected Mazda and Subaru models.

Mazda Models That Use Q85 EFB Batteries

Mazda calls its stop-start system i-stop, and many Mazda vehicles fitted with i-stop require EFB battery technology.

Depending on the year, engine and specification, Q85 EFB batteries can be found in models including:

Mazda 2

Selected Mazda 2 Skyactiv and i-stop models use a Q85 EFB battery, particularly later DJ and DL-series vehicles.

Mazda 3

Selected Mazda 3 Skyactiv and i-stop models use Q85 EFB batteries.

This includes various Mazda 3 models across the BL, BM and BN generations, depending on specification.

Mazda 6

Selected Mazda 6 Skyactiv petrol models use a Q85 EFB battery.

Some diesel Mazda 6 models use a larger EFB battery such as T110, so the existing battery should always be checked before ordering.

Mazda CX-3

Selected Mazda CX-3 Skyactiv/i-stop models use EFB batteries, with Q85 being a common application.

Mazda CX-5

The Mazda CX-5 is one of the most common vehicles associated with Q85 EFB batteries.

Selected petrol Skyactiv CX-5 models use Q85 EFB, while some diesel versions use the larger T110 EFB battery.

Mazda CX-8

Selected Mazda CX-8 models use EFB batteries, including Q85 applications depending on vehicle specification.

Mazda CX-9

Selected Mazda CX-9 petrol stop-start models can use EFB batteries, with battery size depending on the exact vehicle.

Mazda MX-5

Selected Skyactiv MX-5 models use Q85 EFB batteries.

Mazda EFB summary

Common Mazda models associated with Q85/EFB stop-start batteries include:

Mazda 2 • Mazda 3 • Mazda 6 • Mazda CX-3 • Mazda CX-5 • Mazda CX-8 • Mazda CX-9 • Mazda MX-5

Battery specifications can vary by year, engine and model grade, so Battery Gold Coast recommends checking the vehicle before fitting a replacement. Australian application guides list Q85 EFB applications across these Mazda ranges.

Subaru Models That Use EFB Batteries

Subaru has also used EFB batteries across a range of vehicles equipped with stop-start technology.

Australian battery application information identifies Q85 EFB applications across several Subaru models, including:

Subaru Forester

Selected Subaru Forester models equipped with stop-start technology use Q85 EFB batteries.

Subaru Impreza

Selected Subaru Impreza models use Q85 EFB batteries, including stop-start applications.

Subaru XV

The Subaru XV is another important Q85 EFB application, with stop-start versions specifically requiring EFB battery technology.

Subaru Crosstrek

Depending on generation and specification, Subaru Crosstrek vehicles may use different battery technologies and sizes, so the original battery should be checked before fitting a Q85.

Subaru Liberty

Selected Subaru Liberty models equipped with stop-start systems use Q85R EFB batteries.

Subaru Outback

Selected Subaru Outback models use Q85R EFB batteries, including stop-start applications.

Subaru Levorg

Selected Subaru Levorg stop-start models use Q85 EFB batteries.

Subaru WRX / WRX STI

Certain Subaru WRX and WRX STI applications appear in Australian battery application guides with Q85 EFB compatibility, depending on model and specification.

Subaru EFB summary

Common Subaru models associated with Q85/Q85R EFB batteries include:

Subaru Forester • Subaru Impreza • Subaru XV • Subaru Liberty • Subaru Outback • Subaru Levorg • selected WRX/WRX STI models

Battery fitment varies considerably between Subaru models and generations, so we always recommend checking the exact vehicle before installation. Australian application guides list Q85 EFB applications for multiple Subaru models.

Why Battery Programming Is So Important

Replacing the physical battery is only part of the job on many modern vehicles.

Modern cars use sophisticated Battery Management Systems (BMS) to monitor battery condition, charging and electrical demand.

When a new battery is installed, the vehicle may need to be registered, reset or programmed so the charging system knows that a new battery has been fitted.

This is particularly important with vehicles equipped with:

• Stop-start technology
• Battery Management Systems
• Intelligent alternators
• Advanced electrical systems
• Multiple electronic control modules

Battery Gold Coast Programs Your Battery

At Battery Gold Coast, we don't simply install the battery and send you on your way.

Where required, we can program/register the new battery after installation.

This is a crucial step for many modern vehicles because the vehicle needs to recognise the new battery and manage its charging correctly.

Failing to carry out the appropriate battery registration or programming procedure can potentially lead to charging issues, stop-start problems, warning lights or reduced battery life.

New battery + correct installation + correct battery programming = the complete battery replacement.

Why Choose the Energised Q85 HD?

The Energised Q85 HD is designed specifically for vehicles requiring EFB stop-start battery technology.

Its 65Ah capacity and 580 CCA provide the starting performance required by many Q85 applications, while EFB construction is designed to handle the repeated charging and discharging associated with stop-start driving.

It is particularly suited to drivers who spend a lot of time in:

• Gold Coast traffic
• Stop-start city driving
• School drop-off traffic
• Heavy commuter traffic
• Frequent short trips

These driving conditions can place significantly more demand on a battery than traditional highway driving.

Mazda or Subaru Battery Replacement on the Gold Coast?

If your Mazda or Subaru is showing signs of a weak battery, don't wait until the vehicle won't start.

Battery Gold Coast can help identify the correct replacement battery for your vehicle and provide battery installation and programming where required.

We service customers throughout the Gold Coast, including:

Varsity Lakes • Burleigh Heads • Palm Beach • Robina • Broadbeach • Mermaid Waters • Miami • Southport • Surfers Paradise • Nerang • Carrara • Mudgeeraba • Reedy Creek • Helensvale • Coomera • Upper Coomera • Ormeau and surrounding Gold Coast suburbs.

We offer free delivery or pick-up from our warehouse at Varsity Lakes on selected orders, as well as mobile battery fitting.

Need a Q85 EFB Battery?

If you drive a Mazda, Subaru or another stop-start vehicle that requires a Q85 EFB battery, contact Battery Gold Coast before purchasing a replacement.

We'll check the correct battery for your vehicle and, where required, program the new battery after installation.

📞 Call Battery Gold Coast: 0487 665 872

📍 Shop 8, 486 Scottsdale Drive, Varsity Lakes QLD 4227

Battery Gold Coast – Batteries for all budgets.

Important fitment information

Battery requirements can vary depending on the vehicle's year, engine, transmission and model grade. Not every Mazda or Subaru listed above uses a Q85 battery. Always confirm the existing battery specification and vehicle requirements before purchasing.

If your vehicle currently has an EFB battery, it is important to replace it with the correct EFB specification rather than automatically fitting a conventional flooded battery.