Solar Gel Battery and Energy System

Solar gel batteries are a smart investment for energy storage in our life. Using solar energy system to generate electricity has become more and more popular. Adding battery storage to your solar installation can be a great way to improve your quality life at home or own the road by ensuring you have reliable access to power, becoming energy independent, saving thousands on monthly utility bills, and living a green lifestyle. And like everything else in solar installations, there is a lot to consider when deciding on a solar storage option.

If you’ve been looking into the various energy storage options that come with solar panels, you may have come across solar gel batteries. There are many different kinds batteries could used for solar system. To help you make the right choice, it is important for us to know these different types of solar batteries and which one is the most suitable for us.

Table of Contents

Solar Battery Type

At present lead-acid and lithium-ion are the two most popular types of solar batteries.

Flooded Lead Acid Battery

Flooded lead acid batteries have been used for the last 150 years and are among the most common batteries used for off-grid solar setups. These batteries are inexpensive, 99% recyclable, and easy to get rid of at the end of their lifespan.

These are the best batteries for solar if you’re looking for an affordable option but with the following hands-on monitoring:

  • Flooded lead-acid batteries are designed to handle daily charge cycling. They do emit gas as a byproduct, so they must be ventilated correctly.
  • Flooded lead acid batteries are ideal for people who prefer to be hands-on with their system. They’re the most affordable option but require occasional upkeep to work properly.
  • These batteries need regular maintenance. The plates of every cell in the battery must be submerged in water to function properly (which is why they are called “flooded” batteries). You’ll need to add water every 1 to 3 months to keep the plates submerged. It’s smart to check on them once a month.
OPzS battery

Sealed Lead-Acid Batteries

If you are unable to perform regular check-ups, the best battery for your solar panels is the sealed lead-acid battery

As their name implies, sealed lead-acid (SLA) batteries don’t require topping off the water regularly so that they can remain permanently sealed. Instead of replenishing the water supply, SLA batteries have one of two ways to contain their liquid.

The first design is to include separators made from fiberglass between the positive and negative plates. The other design is to convert the liquid into a gel.

Sealed lead acid battery with these advantages:

  • These batteries are spill-proof and non-hazardous. There are two types of sealed lead-acid batteries with fairly similar characteristics: AGM (absorbent glass mat) and gel. Both are nonspillable. Both offer deep cycles and they can both be mounted anywhere, so they’re flexible. 
  • Sealed and maintenance-free operation. There is no corrosive gas generation during normal use and no need to check the specific gravity of the electrolyte or to add water during the service life.
  • Low self-discharge. Because of the use of lead calcium grids alloy and highly purity materials. The self-discharge of sealed lead acid battery is less than 3% per month.

Absorbent Glass Mat (AGM) Batteries

AGM stands for absorbent glass mat, which refers to the technology these devices use to create power. This fiberglass mat sits between the positive and negative lead plates of your battery. It acts sort of like a sponge and keeps the electrolyte close to the positive and negative plates. Then, as the name suggests, it absorbs and holds the battery acid. That way, it doesn’t freely flow around the battery. This allows AGM batteries to have a deep discharge while still providing the sulfate to mix back together with the hydrogen.

lead acid batteries

Gel Batteries

The other type of sealed lead-acid battery is a solar gel battery. AGM and gel batteries come with the same conveniences but operate differently. The silica gel in deep-cycle gel batteries suspends the sulfuric acid, giving the battery greater stability. It also has a lower rate of self-discharge over a long time.

solar gel batteries

AGM VS GEL Battery for Solar

Many experts will debate the merits of gel batteries and AGM batteries when it comes to solar batteries. No two solar installations are identical, and factors such as climate and discharge demands can have a big impact on what type of batteries you need. However, we believe that solar gel batteries provide a number of benefits to solar users for long term energy storage.

LIFE CYCLE

Another indisputable fact about gel solar batteries is that they can provide nearly twice the lifespan of an AGM battery. AGM batteries are generally less expensive, so paying for frequent replacements can be a deterrent. 

TEMPERATURE CONSIDERATIONS

Solar gel batteries also function better at wider temperatures than AGM batteries , making them wise for different climates. Gel batteries adapt better to extreme temperatures and are less likely to experience thermal runaway, a condition that occurs when the internal battery temperature rises too quickly and too far.

EXCEPTIONAL DEEP DISCHARGE RECOVERY

Solar gel battery has more excellent deep discharge recovery and charge acceptance even after deep or prolonged discharge than agm battery

STORAGE PROPERTIES

When it comes to long term passive storage of energy when the system is not in use, gel is on par with AGM, and both battery types exceed lead acid with less overall maintenance. With a gel battery you can relax knowing that the power isn’t going to leak away over time.

These are the main reasons that we recommend gel type solar batteries for most applications. They are easy to install and can stand up to a wide range of environments where solar may be used. To learn more, visit Egber gel battery and see our full catalog of battery products.

Lithium-ion Batteries

Lithium-ion batteries are the latest in rechargeable storage technology for solar, electric, and other forms of energy. Because they use newer, more advanced technology, they offer a compact, lightweight solution with a higher depth of discharge and superior solar battery lifespan. Adding to their long list of benefits are higher capacities and better efficiency. Although Lithium batteries are more expensive, there are several benefits to justify the higher price tag:

  • Longer lifespan
  • No maintenance
  • More efficient power usage
  • More usable storage capacity (deeper discharges)
  • No off-gassing/ventilation
12v100ah lifepo4 battery

How Do I Choose the Best Batteries For Solar?

As we known each battery comes with different pros and cons. The best storage solution for you may not be the best solution for your neighbor! Picking the right battery depends on many factors like application, budget, and expectations for upkeep (like regular maintenance and replacement interval). Your living situation will determine the smartest battery choice for your project. Be sure to take a look at what we consider to be the highlights of each battery so you can choose a solution that best fits your needs. Generally Lithium-ion batteries are the best option due to their longer lifespan and larger solar energy storage capacity. However, lead-acid batteries are more affordable.