3 Understanding the Characteristics of Deep Cycle Batteries

Battery Lifetime

VMAXTANKS specializes in manufacturing deep cycle batteries with starting capabilities.

Their expertise in assigning batteries with exceptional deep cycle capabilities is most valued in demanding applications such as solar and alternative energy, electric vehicles, power backup, military, and industrial equipment and machinery.

In short, VMAXTANKS batteries are explicitly designed to meet the demands of demanding applications, and they have taken the lead in the field of deep cycle batteries.

However, you may wonder what a deep cycle battery is and what its characteristics are.

A deep cycle battery is a lead battery designed to provide long-term power and run reliably until it is 80 percent discharged or more, at which point it should be recharged.

Keep in mind that deep cycle batteries were not designed to power most vehicles. Nonetheless, they are frequently used for recreational vehicles, boats, and golf carts. 

Because these batteries provide a consistent progression of control over a long period of time, they are also useful in solar panels and other plug-in electronics.

Let us now look at its characteristics. Remember that the main battery characteristics are the battery lifetime, depth of discharge, and maintenance requirements.

1. Battery Lifetime

Battery capacity degrades over time due to sulfation of the battery and active material shedding. The interrelationship between the accompanying boundaries is most important in lowering the battery limit:

  • the depth of discharge of the battery over its life
  • the charging/releasing system which the battery has encountered
  • its exposure to long periods of low release
  • the normal temperature of the battery over its lifetime

A deep-cycle lead-acid battery must have a cycle life of more than 1,000 even when discharged to more than 50% depth. In addition to the depth of discharge, the charging system has a significant impact on battery life.

Overcharging or undercharging the battery causes either the shedding of active material or the sulfation of the battery, significantly reducing battery life.

The final effect on battery charging is related to battery temperature. Although low-temperature activity reduces the limit of a lead-acid battery, high-temperature activity accelerates the battery's aging.

Continuous current release bends for a 550 Ah lead-acid battery at different release rates, with a restricting voltage of 1.85V per cell. Longer release times result in greater battery capacity.

2. Depth of Discharge and Battery Capacity

Solar Energy

The depth of discharge in relation to the battery limit is a critical boundary in the model of a battery bank for a PV framework because the energy that can be extracted from the battery is calculated by multiplying the battery limit by the depth of discharge.

Batteries are classified as either deep-cycle or shallow-cycle. A deep-cycle battery will have a depth of discharge greater than 50 percent and may go as high as 80 percent. A shallow-cycle battery bank should have a higher limit than a deep-cycle battery bank to achieve a similar usable limit.

Regardless of the depth of release and evaluated battery limit, the momentary or accessible battery limit is unmistakably influenced by the battery's release rate and working temperature.

Battery capacity decreases by about 1% for every degree below 20°C. High temperatures, on the other hand, are not ideal for batteries because they accelerate aging, self-discharge, and electrolyte usage. The graph below depicts the effect of battery temperature and discharge rate on battery capacity.

The battery limit drops by about 1% per degree below around 20°C. High temperatures, on the other hand, are not good for batteries because they accelerate aging, self-release, and electrolyte used.

3. Maintenance Requirements

Water is lost during the production and breakdown of hydrogen and oxygen gas from a battery, and water should be replaced on a regular basis in lead corrosive batteries. Because different parts of a battery system do not require consistent maintenance, water loss can be a major issue.

Checking for water loss can be costly if the system is in a remote location. By preventing or reducing the amount of gas that escapes the battery, maintenance-free batteries reduce the need for regular attention. Due to the corrosive nature of the electrolyte, however, all batteries introduce an additional maintenance component into a PV system to some extent.

Finally, VMAXTANKS batteries are known for their unrivaled unwavering quality and execution when used in boats, savaging engines, power sports, RVs, and many other applications. Their ability to transmit high currents and extraordinary deep cycle capabilities make them suitable for gas motors, electric engines, and auxiliary batteries used to power onboard electronic equipment.