Mazda MX-30 Mild Hybrid i-Stop Battery Replacement — Q85L EFB Start-Stop Battery
Recommended replacement battery for Mazda MX-30 Mild Hybrid models with i-Stop technology.
The SuperCharge MFD23EF / Q85L Enhanced Flooded Battery is designed for modern Mazda stop-start systems that require stronger cycling performance than a standard lead-acid battery.
Unlike a basic 55D23L lead-acid battery, this Q85L EFB battery is built to handle repeated i-Stop engine restarts, higher electrical demand, and everyday urban driving.
✅ Free in-store battery fitting
✅ No appointment needed — walk-ins welcome
✅ Correct EFB battery for Mazda i-Stop systems
✅ 36-month warranty — conditions apply
✅ Price includes fitting when we keep the old battery
Why Your Mazda MX-30 Needs a Q85L EFB Battery
The Mazda MX-30 Mild Hybrid uses i-Stop start-stop technology, which switches the engine off and restarts it during normal driving.
Even though the vehicle has mild hybrid technology, the main 12V battery still plays a key role in powering the start-stop system and vehicle electronics.
For this reason, we highly recommend using the correct Q85L EFB stop-start battery, rather than downgrading to a cheaper standard 55D23L battery.
Using the wrong battery may result in:
- Shorter battery lifespan
- i-Stop not working correctly
- Poorer cycling performance
- Premature battery failure
- More frequent replacement costs
A proper EFB battery is the better long-term choice for Mazda i-Stop vehicles.
Product Features
- High-performance Q85L / D23L-size EFB battery
- Designed for Mazda i-Stop and stop-start systems
- Strong cranking performance
- Improved reserve capacity for modern vehicle electronics
- Better cycling capability than standard flooded batteries
- Maintenance-free design
- Built for everyday city driving and frequent restarts
- Reliable upgrade over a standard 55D23L battery
Battery Specifications
| Specification | Details |
|---|---|
| Battery Model | SuperCharge MFD23EF |
| Common Fitment Code | Q85L |
| Voltage | 12V |
| Cold Cranking Amps | 685 CCA |
| Reserve Capacity | 110 minutes |
| Battery Type | EFB — Enhanced Flooded Battery |
| Technology | Expanded Calcium Grid Technology |
| Dimensions | 232L x 173W x 205H |
| Total Height | 225 mm |
| Weight | Approx. 18 kg |
| Warranty | 36 months — conditions apply |
Fits
Suitable for selected:
Mazda MX-30 Mild Hybrid i-Stop models
This battery may also suit other Mazda vehicles requiring a Q85L EFB start-stop battery.
Please contact us with your registration number if you are unsure.
Free In-Store Battery Fitting
We offer free in-store battery fitting when purchasing this battery and exchanging your old battery.
No appointment is needed — simply drive in and our team can test, supply, and fit the correct battery for your Mazda MX-30.
Warranty Note
This battery includes a 36-month warranty against manufacturing faults.
Warranty does not cover flat or discharged batteries caused by vehicle faults, parasitic drain, lights/accessories left on, non-use, charging system problems, incorrect application, or repeated deep discharge.
If your battery keeps going flat, we recommend checking the vehicle’s charging system and electrical draw.