What is a deep cycle battery?
In the context of renewable energy, batteries usually refer to deep cycle batteries.
Lead Acid Battery Manufacturers' deep cycle battery is an energy storage unit in which a chemical reaction occurs to generate voltage and generate electricity. These batteries are designed to be cycled (discharged and recharge) many times.
The design of car batteries can provide energy bursts in a short period of time, while deep-cycle batteries can provide electrical energy at a stable rate for a long period of time.
There are different types of 12v Deep Cycle Gel Battery, such as:
The battery is dead
AGM battery (absorption glass mat); and
Recently – Lithium-Ion
All have different manufacturing processes.
Among traditional deep-cycle batteries, fully charged batteries are the most common battery, similar to standard lead-acid batteries in automobiles. As the name suggests, gel batteries contain gel-like substances, and AGM batteries consist of acid suspended in a glass spacer separator.
Although flood, AGM, and gel batteries are most commonly used in off-grid situations, the next generation of lithium-ion battery systems will be used in large numbers in Australian grid-connected households, and the same is true for off-grid.
Deep cycle battery rating
Until recently, there were usually two ratings for batteries: volts and amperes.
Ampere hour (Ah) is the rated capacity of the battery's internal chemical energy that can be converted into electrical energy. It also refers to the energy that the battery can store or vice versa, it can be seen as the discharge rate, which measures the time it takes to discharge the battery before it needs to be charged.
If the battery is discharged in a short period of time (for example, more than 1 hour), the capacity of the battery will decrease. The ampere-hour capacity is reduced by about 50%, so the number of cycles will also be reduced.
If the battery is discharged with a constant current within a few hours, it is called a "C" rating. For example, many small batteries have a C20 rate, which means that if they are discharged for more than 20 hours, they will provide ampere-hour capacity. The battery type in large independent power systems is rated C100, which means that they are designed to discharge for 100 hours or 4 days. This will make your lifespan usually about 15 years.
You can learn about battery voltage and charging status here.
Recently, with the advent of the household energy storage revolution; household batteries are usually expressed in kilowatt-hour (kWh) capacity.