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📍 East Tamaki - 212c Burswood Dr. 📞 0800 315 3887 | Open 7 Days
📍 Mt Albert - 648 New North Rd. 📞 0800 315 3897 | Open 6 Days
📍 Hamilton - 87a Greenwood St. 📞 0800 315 3877 | Open 6 Days
📍 Christchurch - 25 Battersea St. 📞 0800 315 3867 | Open 6 Days

📍 East Tamaki - 212c Burswood Dr. 📞 0800 315 3887
📍 Mt Albert - 648 New North Rd. 📞 0800 315 3897
📍 Hamilton - 87a Greenwood St. 📞 0800 315 3877
📍 Christchurch - 25 Battersea St. 📞 0800 315 3867

Marine Battery Seamaster Gold MFM50 640 CCA M24MF - Superstart Batteries

SuperCharge SeaMaster Gold MFM50 Marine Battery – 12 V 640 CCA (24-Month Warranty)

Save $40.00 Save $40.00
$299.90
$299.90 - $299.90
$299.90
$259.90
$259.90 - $259.90
$259.90

⚓ Reliable Starting Power for Small to Mid-Size Boats

The SuperCharge SeaMaster Gold MFM50 is a maintenance-free 12 V marine battery engineered for superior starting power and long reserve capacity. Delivering 640 Cold Cranking Amps (CCA) and a 140-minute reserve capacity, this compact powerhouse provides consistent, reliable starting performance for boats with engines up to 200 HP and essential on-board electronics.

Featuring Calcium Expanded Grid (EXG) Technology and a fully-sealed design, the SeaMaster Gold series offers enhanced corrosion resistance, longer life, and maximum durability under marine conditions.

⚙️ Technical Specifications

Specification Detail
Model MFM50 (SeaMaster Gold)
Voltage 12 V
Cold Cranking Amps (CCA) 640
Reserve Capacity (RC) 140 minutes
Dimensions (L × W × H) 258 × 174 × 201 mm (227 mm total height)
Weight ≈ 20 kg
Battery Type Maintenance-Free (Calcium Technology)
Warranty 24 months (conditions apply)

🔋 Key Features & Benefits

  • Premium Maintenance-Free Design – No topping up required; sealed to prevent leakage or evaporation.

  • EXG Technology – Improved plate strength and corrosion resistance for longer battery life.

  • Strong Starting Power (640 CCA) – Reliable ignition for marine engines in all conditions.

  • High Reserve Capacity (140 min) – Keeps electronics running between starts.

  • Heavy-Duty Marine Construction – Built to resist vibration and harsh salt-water environments.

  • Fully Sealed Cover – Minimises electrolyte loss and extends battery service life.

  • Eco-Friendly – 100 % recyclable materials with low maintenance requirements.

🛥️ Ideal For

  • Boats, runabouts and small yachts (up to ≈ 200 HP)

  • Outboard and inboard starting applications

  • Light commercial marine use and fishing boats

  • On-board electronics such as fish finders and navigation units

🔄 Replacement / Cross Reference

Replaces: NS70, M24, M24/580, M24/680, MS600, CV24, CM24, NS70MF, NS70RMF, N50ZZ, MF55D26R, MF65D26R, MF75D26R, MF85D26R, MF95D26R, MF105D26R, SMFNS70X, D26X, 570024051, M24MF and other Group 24 marine batteries.

📍 Pickup & Availability

Pickup available from:
Hamilton | Wellington | Christchurch
📞 Please call first to confirm stock availability before pickup.

🛡️ Warranty

24-Month Nationwide Marine Warranty (conditions apply). See product label for details.