Gel Battery MVG 12 V 200 Ah

The Mastervolt MVG 12/200 Gel battery is a service power source designed for medium and large embedded systems (12V and 24V). Thanks to its gel electrolyte technology, it is fully sealed, maintenance-free, and ideal for intensive cyclic use aboard your sailboat.

This battery provides a nominal voltage of 12 V and a capacity of 200 Ah (C20). It is perfectly sized to meet the high energy demands of your onboard equipment.

Gel technology offers several major advantages:

No maintenance required. No gas formation during normal use, enabling safe installation. Excellent resistance to repeated deep discharges. Very low self-discharge, ideal for periods of inactivity or winter storage.

Yes, absolutely. As this Gel battery does not produce any gas emissions during normal use, it can be safely installed in confined or unventilated spaces aboard your vessel.

The MVG 12/200 battery is a robust unit. It weighs 70 kg and its overall dimensions (including terminals and handles) are 518 x 274 x 238 mm (Length x Width x Height).

It is strongly recommended to install the battery in a vertical position (upright). If a horizontal installation is absolutely necessary due to your cabin layout, ensure it is never mounted on its shortest side.

To ensure optimal operation and proper heat dissipation, you must maintain a clearance of at least 1 centimeter between each battery in your service battery bank.

It is essential to use a charger with an IUoUo charge curve (3-stage charging). Using an unsuitable charger could irreparably damage the battery.

This battery accepts a maximum charging current of 100 A, which corresponds to 50 % of its nominal capacity. This allows for fast and efficient recharging via your alternator or shore power charger.

To maximize the lifespan of your Mastervolt battery, it is recommended to limit regular discharges to 60% of its nominal capacity. Avoid deep discharges and fully recharge it after each use.

No, the MVG 12/200 battery is 100% maintenance-free. You do not need to check fluid levels. Simply ensure the terminals remain clean and properly tightened, and recharge it regularly.

Although it is designed primarily for service and deep-cycle use, it offers very good cranking performance with a DIN CCA of 630 A and an SAE CCA of 1100 A.

The recommended operating temperature is 20°C. It tolerates a range from -20°C to 45°C. Note that every 10°C increase above 20°C halves its lifespan, and very cold temperatures reduce available capacity.

Yes, you can create a battery bank in 12V or 24V. However, all batteries connected in series or parallel must be of the same brand, same type, same capacity, and have the same state of charge. Never mix new batteries with old ones.

To clean your battery, use only a soft, damp cloth. Never use additives, acidic products, solvents, or abrasive powders that could damage the plastic housing.

Absolutely not. This is a sealed valve-regulated lead-acid battery (VRLA). The pressure valves are factory-sealed. Attempting to open the battery will irreparably damage it and void its safety.

For a temperature of 25°C, charging parameters must be set to:

Float voltage: 13.80 V Absorption voltage: 14.25 V (for a maximum of 5 hours) Temperature-compensated charging (-30mV/°C) is highly recommended.

Yes, the MVG range is excellent for winter storage thanks to its very low self-discharge. Just make sure to fully recharge it to 100% before storing, and recharge it if the open-circuit voltage drops below 12.3 V.

This battery is fitted with type A terminals. When installing, use appropriate battery lugs and ensure all connections are tightened securely to prevent energy loss or overheating.

Incomplete charges can damage Gel batteries. It is therefore essential to recharge the battery to 100% of its capacity regularly, ideally at least once a week during active use of your boat.