Parts of a Deep Cycle Battery

Posted by Crown Battery on May 1, 2018 9:19:00 AM

 

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Learning the different parts of a deep cycle battery can be useful both for battery users and for battery dealers who want to be able to speak thoroughly about the products they sell. Though there can be many differences between brands, lifespan, and the particulars of a deep cycle battery, the parts remain largely the same.

Types of Deep Cycle Batteries

Deep cycle batteries use a lead construction, but there are two specific types of battery construction that are used in deep cycle batteries: flooded and sealed. The basic operational principles are the same for the two types, though the parts used differ slightly.

Flooded

Flooded deep cycle batteries including the following parts:

  • Lead plates: deep cycle batteries use solid plates that are submerged in electrolyte to store power
  • Electrolyte: the battery plates are complete submerged in a liquid mixture of sulfuric acid and water
  • Vent: flooded batteries must vent gases during operation
  • Cap covers: the cap covers on a flooded deep cycle battery are removed so that the user can add distilled water to maintain the battery’s electrolyte level
  • Case: the battery plates and electrolyte are contained in a durable case that should withstand regular jostling

Valve Regulated

Valve regulated batteries are also known as sealed or maintenance-free deep cycle batteries. Sealed deep cycle batteries do not allow for the user to add more electrolyte because the construction of these batteries is such that gases produced during operations are recombined into the battery system and what is not recombined is vented through the battery valves. The two most common types of valve regulated deep cycle batteries are absorbed glass mat (AGM) and gel cell.

Absorbed Glass Mat Deep Cycle Battery

  • Lead plates: Just like flooded deep cycle batteries, AGM batteries use solid plate, but with the addition of glass separators
  • Glass mat separators: a glass mat separates the lead plates and absorbs the electrolyte
  • Electrolyte/active material: the electrolyte is absorbed into the glass mat separator, to eliminate the free flowing liquid
  • Case: the battery plates and active material are contained in a durable case that should withstand regular jostling

Gel Cell Deep Cycle Battery

  • Lead plates: gel cell deep cycle batteries use solid plates that are submerged in electrolyte to store power
  • Electrolyte: rather than a liquid, the electrolyte in a gel cell battery has added silica that causes it to stiffen into a gel. This means the electrolyte will not leak or slosh around during operation.
  • Case: the battery plates and electrolyte are contained in a durable case that should withstand regular jostling

While the parts of different deep cycle batteries are essentially quite similar, knowing which type you are dealing with can help you to perform proper maintenance and understand what might be going on if your battery is not performing as it should.

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Tags: Deep Cycle Batteries