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Not all boat batteries are equal, we can find watertight, or gels, which if broken their corrosive acids not go abroad, and are the more expensive they are known as “deep cycle”.
These last are the type of discharge and charge cycles longer, but if we want to extend the battery life we must not allow this to discharge much.
Should be kept clean its terminals, since small leaks can occur due to external dirt around them, which can reach you damaged in long seasons.
The battery is essential as many of the devices of electric powered boat, as the engine starting, navigation lights, among others, so it is important to maintain the good condition of the battery.