Baterija MVG gel 12 V 55 Ah

The MVG gel 12V/55Ah battery from Mastervolt is a high-performance sealed service battery. Its main characteristics include:

A voltage of 12V and a capacity of 55Ah.Strictly maintenance-free Gel technology.No gas release during normal use.Excellent resistance to intensive charge and discharge cycles.

This Mastervolt battery weighs 19 kg. Its overall dimensions, including terminals and transport handles, are 261 x 136 x 230 mm (Length x Width x Height).

No, you must never open the battery or add acid or distilled water to it. Thanks to its technology where the electrolyte is fully absorbed in gel form, it is maintenance-free. The pressure valves are sealed and opening them would destroy the battery.

It is recommended to install it in a vertical position (upright). However, a horizontal installation is also possible, provided it is not mounted on its shortest side. Its sealed design prevents any electrolyte leakage.

Under normal use, Gel technology does not produce any gas emissions. You can therefore install this battery in confined spaces aboard without requiring rigorous ventilation, unlike traditional lead-acid batteries.

You must use a battery charger with an IUoUo charging profile. It is also highly recommended to use a charger equipped with a temperature compensation probe (-30mV/°C) to optimize the lifespan of your battery bank.

At a reference ambient temperature of 25°C, your charger voltage settings should be as follows:

Absorption voltage: 14.25 V (for a maximum of 5 hours). Float voltage: 13.80 V.

The battery accepts a maximum charge current of 27.5 A, which corresponds to 50% of its nominal capacity of 55Ah. This allows for exceptionally fast charging compared to standard marine market practices.

To preserve its lifespan, it is not recommended to regularly discharge the battery beyond 60% of its nominal capacity. It is also imperative to fully recharge the battery immediately after each discharge cycle.

Although primarily optimized as a house battery bank (powering onboard equipment), it delivers a cold cranking amperage (CCA) of 380 A (SAE standard) or 230 A (DIN standard). It can therefore occasionally assist with engine starting, but this is not its primary function.

Yes, you can wire them in series or parallel to increase the overall voltage or capacity of your bank. However, all connected batteries must be of the same brand, type, capacity, and have the same initial charge level. Never mix new batteries with old ones.

When installing multiple units side by side, it is essential to maintain a minimum 1 cm gap between each battery to allow adequate heat dissipation and prevent overheating.

The allowed operating temperature range is between -20°C and 45°C. However, the recommended nominal temperature is 20°C. Note that every 10°C increase above this reference temperature halves the battery's lifespan.

The battery is maintenance-free internally. Simply check the connections every three months to ensure they are tight and not corroded. Keep the battery case clean and dry using only a soft, damp cloth, without any chemical or abrasive products.

Yes, due to its extremely low self-discharge rate, it provides excellent performance during prolonged wintering periods. It is still recommended to store it fully charged and check its voltage periodically (recharge if it drops below 12.3 V).

The battery is equipped with standard type A terminals. During installation, it is recommended to use properly sized cable lugs, tighten connections firmly, and add insulating caps to prevent accidental short circuits.

No, it is strongly recommended to keep the battery away from any heat source, including the engine block. High ambient temperature accelerates self-discharge and significantly reduces overall battery life.

If the voltage of one battery differs by more than +0.49 V or -0.24 V from the average float voltage, or if the surface temperature difference between batteries exceeds 5°C, there is a malfunction. It is recommended to have a qualified technician inspect your installation.

Yes, for obvious electrical safety reasons, all loads (equipment) and chargers must be turned off during handling, installation, and connection of the battery terminals.

Repeated incomplete charges can irreversibly damage the battery. It is essential to fully recharge it regularly, ideally at least once a week for cyclic use.