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The Victron Energy 12V/240Ah AGM Deep Cycle Battery is a sealed, maintenance-free VRLA battery designed for deep-cycle service and demanding high-current applications. Its low internal resistance makes it especially suitable for inverter systems, electric motors, thrusters, winches, backup-power systems and other equipment requiring substantial short-term current.
AGM technology holds the electrolyte inside an absorbent glass-fiber mat between the battery plates. This sealed construction eliminates routine electrolyte maintenance, while safety valves allow gas to escape if excessive charging pressure or an internal fault occurs.
Key Features:
This battery is suitable for marine systems, RVs, off-grid solar installations, backup-power systems and industrial equipment. Its 240Ah capacity provides substantial energy storage, while AGM construction offers strong performance for loads with high startup or surge-current requirements.
Battery life depends heavily on depth of discharge, charging quality and operating temperature. Avoid leaving the battery deeply discharged, use a charger with an appropriate AGM profile and follow the recommended charging voltages to obtain the best service life.
Technical Specifications:
| Manufacturer | Victron Energy |
| Model | 12V/240Ah AGM Deep Cycle Battery (M8) |
| Manufacturer Part Number | BAT412124081 |
| Battery Technology | Sealed VRLA AGM, flat plate |
| Nominal Voltage | 12V DC |
| Rated Capacity | 240Ah at the 20-hour discharge rate at 77°F |
| Nominal Stored Energy | Approximately 2.88kWh |
| Cold-Cranking Amps | 650A CCA at 0°F |
| Reserve Capacity | 250 minutes at 80°F |
| Recommended Absorption Voltage | 14.2–14.6V for normal cyclic charging |
| Recommended Float Voltage | 13.5–13.8V |
| Recommended Storage Voltage | 13.2–13.5V |
| Preferred Maximum Charge Current | 48A, equivalent to 0.2C |
| Temperature Compensation | Recommended when the battery remains below 50°F or above 85°F for extended periods |
| Self-Discharge | Less than 2% per month at 68°F |
| Float Design Life | Approximately 7–10 years at 68°F |
| Cycle Design Life at 80% Discharge | Approximately 400 cycles |
| Cycle Design Life at 50% Discharge | Approximately 600 cycles |
| Cycle Design Life at 30% Discharge | Approximately 1500 cycles |
| Terminal Type | Flat copper M8 terminals |
| Dimensions (L × W × H) | 20.6 × 9.4 × 8.8in (522 × 240 × 224mm) |
| Weight | 147.7lb (67kg) |
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