The SuperCharge SeaMaster MFM70 is a popular maintenance-free marine battery built on an N70-sized footprint. It is primarily engineered to deliver high cranking power for boat engines while offering strong resistance to harsh, vibrating marine environments.
Key Specifications
| Technical Feature | Specification |
| Nominal Voltage | 12V |
| Cold Cranking Amps (CCA) | 720 A to 750 A (at -18°C) |
| Marine Cranking Amps (MCA) | 900 A (at 0°C) |
| Amp Hours (Ah) | 85 Ah to 90 Ah (20-hr / 10-hr rates) |
| Reserve Capacity (RC) | 160 Minutes (at 25A) |
| Battery Technology | Sealed Maintenance-Free Calcium (SMF CAL / EXG) |
| Size Group | N70 |
Physical Dimensions & Layout
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Length: 304 mm – 305 mm
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Width: 173 mm – 174 mm
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Case Height: 203 mm – 205 mm
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Total Height (including terminals): 224 mm
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Wet Weight: Approx. 20.1 kg
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Terminal Type: DST (Dual System Terminals – Standard Automotive Posts + Threaded Studs)
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Assembly / Polarity: Assembly "D" (Positive Left)
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Base Ledge: Front Ledge (FL)