Sunday, November 8, 2009

Battery for Boats: the Starting, Deep Cycle, and Marine Battery

By Scott Immers

For boating buffs, they'd know that one integral part of their boats is the batteries. For someone new in the business, this article will provide basic information on batteries for your money's worth.

Batteries for boats actually look like car batteries. However, these are sturdier than regular car batteries because they need to be able to endure the boat's swaying movements as well as jolts.

One type of boat battery is the lead acid type battery. This battery is the most common, because it is more affordable than most, and needs minimal maintenance. Unfortunately, it is heavier than the other types. In addition, the lifespan of the lead acid type is short, the lead content in the battery has toxic effects, and it is highly combustible because it can form hydrogen gas when its components are mixed with air.

The batteries for boats are commonly lead acid batteries, similar to the ones in your cars. Although batteries used in boats are tougher to endure the rough seas. Lead acid batteries are so called because they have plates (these positive and negative plates are needed to conduct a charge) made of lead and sulfuric acid inside its rectangular casing.

On the other hand, deep cycle batteries are made up of thicker plates of solid lead. It provides steady surges of electrical energy for the boat's accessories which also includes the trolling motor (a secondary propulsion or force to quietly maneuver boats), radio, lights, instruments, and the like.

The differences of these battery types lie in the material used to create plate materials (these positive and negative plates are necessary to create voltage). In starting batteries, lead sponges are used to create plates. This fine spongy material increases the plates' surface area therefore allowing the battery to provide huge amounts of energy in a short period of time. Deep cycle batteries, on the other hand, have thicker plates made of solid lead because if a fine spongy material is used, the plates disintegrate quickly. Marine or hybrid batteries also use a spongy material but these are cruder and heavier than that used in starting batteries, so they can deliver large amounts of power and last long enough to be used like deep cycle batteries.

Now we come to the marine battery. This is also called the hybrid battery because it can be used as a starting battery and as a deep cycle battery. This is made possible by its plate that is made of a coarse sponge that is stronger than that of a starting battery, though not as strong as that of the deep cycle battery.

So now you know the most common batteries for boats. Having the right battery for your needs is important. Having a battery that can be used as a starting and deep cycle battery is a big plus.

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