SuperCharge Gold Plus MF31-931 4WD Battery 12V 1000CCA

Premium maintenance-free 4WD battery with 1000 CCA and SNT technology—delivers reliable starting power and extended service life for heavy-duty vehicles in extreme Australian conditions.

Please Note: Battery is available for store pickup only due to dangerous goods shipping restrictions.

Product Overview

The SuperCharge Gold Plus MF31-931 is a premium maintenance-free automotive battery engineered for heavy-duty 4WD vehicles, commercial trucks, and touring rigs operating in Australia's harsh climate extremes. The 12-volt, 110 amp-hour battery delivers 1000 cold cranking amps (CCA) at -18°C—providing reliable engine starting power for diesel 4WDs, turbo-diesel utes, and large-capacity petrol engines even in cold highland or alpine conditions. SNT (SuperCharge New Technology) enhances battery life and power delivery through advanced calcium alloy plate composition that reduces water loss and extends service intervals. The fully sealed, maintenance-free design eliminates the need for water top-ups—critical for remote touring, agricultural applications, or fleet vehicles where regular maintenance access is impractical. EXG calcium plates withstand Australian corrugations, heat, vibration, and deep-discharge cycling typical of 4WD touring with fridges, lighting, and auxiliary loads. The 210-minute reserve capacity (RC) provides extended run-time for accessories when the engine is off—valuable during extended stops, camping, or equipment operation. Backed by up to 40 months warranty (24 months for commercial use), the MF31-931 suits Toyota LandCruiser, Nissan Patrol, Ford Ranger, Mitsubishi Triton, and other heavy-duty vehicles requiring Group 31 battery fitment.

Key Specifications

• Product: Maintenance-free automotive battery (4WD/heavy-duty)
• Part number: MF31-931
• Brand: SuperCharge Gold Plus
• Battery type: Sealed maintenance-free (SMF)
• Nominal voltage: 12V DC
• Amp-hour capacity: 110 Ah (ampere-hours)
• Cold cranking amps: 1000 CCA @ -18°C
• Reserve capacity: 210 minutes @ 25°C
• Technology: SNT (SuperCharge New Technology) with EXG calcium plates
• Dimensions: 330 mm L × 172 mm W × 203 mm H (237 mm total height with terminals)
• Weight: 26.51 kg (wet, fully charged)
• Assembly type: H (terminal configuration)
• Post type: Standard automotive posts
• Additional features: CV (Coated Vent), CT (Charge Time optimised), HE (High Efficiency), FDH (Fast Discharge capability)
• Warranty: Up to 40 months (private use), 24 months (commercial use)
• Battery group size: Group 31 (BCI standard)

Features & Benefits

1000 CCA for Reliable Cold Starting
1000 cold cranking amps at -18°C provides robust starting power for turbo-diesel 4WDs, large V8 petrol engines, or vehicles with high-compression engines—ensures reliable starts in alpine environments, cold mornings, or after extended periods without use. Critical for diesel engines requiring higher cranking current than equivalent petrol engines.

110 Ah Capacity for Extended Accessory Run-Time
110 amp-hour capacity supports auxiliary loads like camping fridges, LED lighting, water pumps, and communication equipment during extended off-grid camping or remote work—delays auxiliary battery discharge that would otherwise leave insufficient charge for engine starting. The high capacity suits dual-battery systems or single-battery setups with significant accessory loads.

SNT Technology with EXG Calcium Plates
SuperCharge New Technology uses advanced calcium alloy plates that significantly reduce water loss compared to conventional lead-calcium designs—extends intervals between maintenance checks (or eliminates them entirely in sealed construction). The calcium composition also improves charge acceptance and reduces self-discharge during storage or infrequent use.

Fully Sealed Maintenance-Free Design
Sealed construction eliminates water top-up requirements—removes maintenance burden for fleet vehicles, agricultural equipment, or touring rigs where battery access is difficult. The sealed design also prevents acid leaks during extreme angles, rollovers, or aggressive off-road driving, protecting cargo areas and undercarriage components from corrosion.

210-Minute Reserve Capacity
Reserve capacity measures how long the battery can deliver 25 amps at 25°C before voltage drops to 10.5V—the MF31-931's 210-minute RC provides 3.5 hours of accessory run-time. Valuable during lunch stops with fridge running, equipment operation with engine off, or emergency situations requiring extended lighting or communication without alternator charging.

Engineered for Australian Extreme Conditions
Designed specifically to withstand Australia's harsh environment—handles extreme heat (outback summer temperatures exceeding 50°C ambient), corrugated road vibration, dust ingress resistance, and deep-discharge cycling from accessory loads. The robust construction and calcium plate technology prevent premature failure common in standard batteries subjected to Australian touring conditions.

Up to 40 Month Warranty Coverage
Premium warranty reflects SuperCharge confidence in battery durability—up to 40 months warranty for private passenger vehicles, 24 months for commercial/fleet use. Warranty coverage provides peace of mind for owners investing in premium battery technology for remote touring or critical business applications.

Technical Specs

• Product: Sealed maintenance-free automotive battery
• Model: MF31-931
• Brand: SuperCharge Gold Plus
• Battery group: Group 31 (BCI)
• Technology: SNT with EXG calcium plates
• Type: Maintenance-free (SMF), fully sealed
• Voltage: 12V DC nominal
• Capacity: 110 Ah (20-hour rate)
• Cold cranking amps: 1000 CCA @ -18°C (SAE standard)
• Reserve capacity: 210 minutes @ 25°C (SAE standard)
• Plate material: Lead-calcium alloy (EXG)
• Electrolyte: Absorbed (sealed, spill-proof)
• Terminals: Standard automotive posts
• Terminal configuration: H (Assembly H)
• Length: 330 mm
• Width: 172 mm
• Height: 203 mm (battery case)
• Total height: 237 mm (including terminals)
• Weight: 26.51 kg (wet, fully charged)
• Hold-down: Standard Group 31 hold-down compatible
• Features: CV (Coated Vent), CT (Charge Time), HE (High Efficiency), FDH (Fast Discharge)
• Warranty: Up to 40 months (private use), 24 months (commercial use)
• Operating temperature: Not specified (automotive-rated for Australian conditions)
• Self-discharge: Reduced (calcium technology)
• Vibration resistance: Enhanced (4WD/heavy-duty rated)

Compatible With / Goes Well With

Heavy-Duty Vehicles (Group 31 Fitment):

• Toyota LandCruiser (70, 100, 200 series with diesel engines)
• Nissan Patrol (Y61, Y62 with diesel engines)
• Ford Ranger (diesel variants requiring Group 31)
• Mitsubishi Triton (diesel variants)
• Isuzu D-Max, MU-X (diesel)
• Commercial trucks and buses
• Agricultural tractors and machinery
• Mining and construction equipment

Dual-Battery System Applications:

• Primary starting battery in dual-battery 4WD setups
• Auxiliary/second battery for accessory loads
• Caravan/camper trailer house battery
• Marine auxiliary battery (non-starting applications)

Charging and Maintenance:

• 12V battery chargers (10-20A for maintenance charging)
• Solar charge controllers (MPPT or PWM for off-grid charging)
• DC-DC battery chargers (for dual-battery systems)
• Battery management systems (BMS for monitoring)
• Battery terminals and lugs
• Battery hold-down brackets (Group 31 size)

Note: Verify battery dimensions (330 × 172 × 203/237 mm) fit your vehicle's battery tray before purchasing. Some vehicles require specific terminal configurations—confirm H-assembly terminal orientation matches your application. For dual-battery systems, ensure batteries are matched (same type, age, capacity) to prevent charging imbalance.

Weight

26.51 kg (wet, fully charged)

Frequently Asked Questions

Why is this battery store pickup only?

Automotive batteries are classified as dangerous goods due to lead-acid content and must be transported according to strict regulations. Shipping batteries via courier presents significant safety and compliance challenges, so SuperCharge Gold Plus batteries are available for store pickup only. Contact Frankies Auto Electrics for pickup arrangements and battery disposal of your old battery (recycling services may be available).

Will this battery fit my Toyota LandCruiser 200 Series?

The MF31-931 is a Group 31 battery with dimensions 330 × 172 × 203 mm (237 mm total height). Verify these dimensions match your LandCruiser's battery tray before purchasing. Many diesel LandCruisers use Group 31 batteries, but terminal configuration (H-assembly) and hold-down compatibility should be confirmed. Contact Frankies Auto Electrics with your vehicle details for fitment verification.

What does "maintenance-free" mean—do I never have to check it?

Maintenance-free means the battery is sealed and doesn't require water top-ups like conventional flooded batteries. However, you should still periodically check terminal corrosion, ensure secure mounting, and verify charging system health. The sealed design eliminates the most labour-intensive maintenance task (water level checks), making it truly "fit and forget" for normal operation.

How long will this battery last in my 4WD with fridge and accessories?

Battery lifespan depends on usage patterns, charging system health, depth of discharge, and environmental conditions. With proper charging (alternator or solar), the MF31-931 typically lasts 4-6 years in 4WD touring applications. Deep discharges (below 50% state of charge) reduce lifespan—install a battery management system or voltage monitor to prevent over-discharge when running accessories without alternator charging.

Can I use this battery in a dual-battery system?

Yes, the MF31-931 works as either primary starting battery or auxiliary accessory battery in dual-battery systems. For auxiliary applications, pair with a DC-DC charger or battery isolator. When using two batteries, ensure they're matched (same type, age, capacity) to prevent charging imbalance. For dedicated auxiliary battery with deep-cycle requirements, consider SuperCharge's AGM deep-cycle alternatives for better cycling performance.