When it comes to solar batteries, there is an ongoing debate between gel batteries and AGM batteries. Since no two solar installations are the same, many factors like the climate and discharge rates impact your choice of solar batteries.

For instance, if you are designing off-grid solar systems, you may be required to carefully select suitable batteries for your solar panel system.

To help you with this, we will help you identify the differences between a gel battery and an AGM battery in this article. So, let’s get started!

What Are Gel Batteries?

Gel batteries are lead-acid batteries, that has silica inside the electrolyte mixture which helps create a gel-like substance. In such batteries, the electrolytes stand solid between the positive and negative plates inside the battery.

So, if you have a lead-acid battery housing, then gel batteries are beneficial in providing extra power to your overall battery system. Along with this, they come with many other benefits for long-term energy storage.

What Are AGM Batteries?

Absorbed glass mat (AGM) batteries are a type of sealed lead-acid batteries that are used for solar storage options. These batteries are resistant to vibration, are sealed, and maintenance-free.

Compared to traditional valve-regulated lead-acid VRLA batteries, they offer better performance, minimal gassing, and less acid leakage. Additionally, they are compatible with solar electric vehicles and are excellent energy storage options for anyone looking for sustainable alternatives.

AGM and gel batteries thus are both lead-acid batteries and are different from lithium-ion batteries. However, lead-acid batteries are more commonly preferred as a backup energy source for solar panels as they increase the battery life of the solar storage.

Deep Cycle Solar Battery

Types of Battery Systems

There are two main types of battery systems- grid-tie with battery backup and off-grid systems.

Off-Grid Systems

An Off-grid system is the type of battery system independent of grids. During days when the sunlight isn’t sufficient, for example, on cloudy days or at nights, the solar power system of the house depends on the batteries.

In these systems, the highest amount of electricity is generated during the peak hours of the daytime when the solar light is maximum while the highest consumption of this generated electricity takes place during the night.

For the electricity to last all night long or even longer on days when the sunlight is insufficient, the battery bank must be fully charged during the peak hours of solar light. As such, the batteries designed for such type of functioning are deep cycle batteries. This means that they charge throughout the day and deep discharge throughout the night.

Under this category, the most common types of batteries produced are flooded batteries, AGM, and gel lead-acid batteries.

Grid-Tied System

The grid-tied system works with the help of a battery backup that uses them only at the time of a power outage. Under the regular functioning of this system, the DC power from the solar panels passes through a grid-tier inverter that converts it to AC.

With the help of this power, the panels can run appliances in your home. Simultaneously, some amount of this electricity can also charge the battery bank. So, during a power outage, when the inverter disconnects itself from the grid, and the electricity supply in your home will run as an off-grid system.

How to Choose Your Solar Batteries?

Lead-acid batteries (gel based or AGM batteries), are the most commonly preferred battery type, especially if you decide to go for an off-grid system. But when it comes to choosing between the two; it is important to keep in mind that each type has its advantages and disadvantages.

For instance, gel batteries are specialized in deep-cycle batteries. They are sturdy and low-maintenance and the electrolyte present inside the battery prevents the cell from leaking in case of any damage. However, they are also slightly expensive and usually discharge faster than flooded batteries.

Wrapping Up

Solar electricity is a one-of-a-kind experience, and the type of system you choose to go for defines it even further for you. Hence, you need to carefully select your battery bank as some mistakes could lead to severe damage.

As we all know, solar energy is a step towards an eco-friendly life, therefore maintaining and monitoring your system regularly will ensure a longer lifespan of the system.

So, what’s the hold? Invest in gel batteries for all your energy requirements!