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How to Pick Out the Best Battery for a Solar Panel System

When choosing an electric battery (or battery) for your solar array system, three battery categories work best. Their name has an impact on the effects on your battery. If the problem is identified early..

Have you ever wondered how to choose the most straightforward battery (s) for your solar panel system (or off-grid power system)?

Or have you ever wondered what makes one deep cycle battery better than another?

If so, this text will answer these questions and provides you specific things to test before purchasing your new battery (to confirm you get the best bang for your buck)!

When choosing an electric battery (or battery) for your solar array system, three battery categories work best. So, during this article, we will:

  • Quickly compare the three main forms of solar batteries (lead-acid, saltwater, and lithium). 
  • Compare battery components, like depth of discharge, Capacity and power, efficiency, battery life, and manufacturer.

By the tip of this text, you’ll understand how to get rid of the simplest battery for your solar system! So, let’s start.

United Kingdom. Click here to Watch the free Presentation to Learn More

#1. Three Best kinds of Batteries for Solar Panel Systems:

Three Best kinds of Batteries for Solar Panel Systems
Best Batteries For Solar Panel System

The best kind of battery for your electrical device system will rely on what you’re trying to find. Three battery types work exceptionally well; However, each battery type has its pros and cons.

So, the immediate decision to form is that the sort of battery which will suit your system. To learn how to bring old batteries back to life, take a look at our Presentation here. 

For more depth about Reconditioning your old battery back, Click below, for a Video demonstration.


Lead-Acid Batteries

Lead-acid batteries are among the longest used and most reliable batteries living. They’re the most affordable option, but you trade costs for battery life and depth of discharge. 

But homeowners require an excessive amount of storage for an occasional cost, or if you’re getting in the system, lead-acid may be a superb option.

Salt-Water Batteries

Saltwater batteries are costlier than lead-acid batteries, but they even have an extended lifespan.

Unlike lead-acid batteries, saltwater batteries are practically novel to the market and remain somewhat unused and challenging to urge between the two. 

Saltwater has the maximum extraordinary depth of discharge of the three kinds of batteries, so you may get away higher output per charge before you wish to recharge.

Sample Li-ion

Lithium Batteries

Lithium batteries are the foremost expensive and longest-lasting of the three forms of solar array. 

Their discharge depth is a smaller amount than that of saltwater batteries but more significant than a lead-acid accumulator. 

Compared to all or any three options, lithium batteries are probably the highest-rated but also the smallest amount accessible cost-wise.

#2. Compare Battery Components

Pick out the best battery - Compare Battery Components

Once you have chosen the most effective battery type for your solar array or off-grid system (which meets your system’s needs), there are components to search out the best battery for your solar panel system. Please have a glance at it below.

Cost: Best Battery For A Solar Panel System

Cost is maybe one of all the more apparent components. But the old saying goes, “You get what you get together with buying a battery.”

However, some batteries are also overkilled for your system in some instances. Therefore the costliest battery might not always be the most straightforward option.

Battery life and warranty

For most systems, A battery will cycle daily, meaning that it’ll charge and drain regularly. With each cycle, the battery’s capacity to stay the identical charge decreases slightly.

One component to contemplate is that the battery warranty guarantees a specific number of helpful life cycles.

Depth of discharge

Depth of discharge is what quantity you’ll be able to reduce the battery before recharging the battery without damaging its life.

Some solar batteries may be discharged quite others, allowing greater use between charging.

Essentially, A battery with a 90% depth of discharge per cycle will provide more battery power per charge compared to the electric battery with less charge amount.

Efficiency

Efficiency is the amount of energy used compared to the quantity of energy it takes to store the said energy.

Power is required to charge the battery, and therefore the energy taken to charge the battery is compared with the number of energies from the charged battery.

The upper the efficiency, the more influential the battery.

Capacity and Power

Kilowatt-hours (kWh), measured in Capacity, is that the energy battery can store over time. More literally, Capacity is that the amount of energy (measured in kWh) a battery can hold over time.

The upper the battery capacity, the more power it can store.

Power or strength is what proportion of energy A battery can provide in a moment. Battery with High Capacity and high power can run an intensive system for several hours;

Low Capacity and high-power batteries can run a comprehensive system just for a brief time.

Manufacturer

It will not be the one component that the majority would consider, but it’s something to notice.

Like other technology, there are both trusted brands and start-up brands. A trusted brand comes with known flaws and benefits. 

A start-up brand may have better technology but might also have as-yet-unknown technical problems. counting on your system’s needs, you will attempt to associate with a well-reviewed company or novel to the market.

If you consider all these things while buying a battery, then you invest in the right place. But imagine what would you do if the battery didn’t last forever?

Have you ever heard about Battery Reconditioning Program.

How to Recondition or Desulphated a Lead Acid Battery for Solar Panel System?

Desulphation: Best Battery For Solar Panel System
Sulfating is a buildup of lead sulfate crystals and is the number one cause of early battery failure in lead-acid batteries.

The most common form of lead-acid battery is used in cars and trucks. Golf carts, electric vehicles and others also use lead-acid batteries.

Essentially, every lead-acid battery works in the same way as they are prone to corrosion of the same type of internal battery plates known as Sulfating. 

A sulfated plate is the most common malfunction of a dead battery, but a sulfated battery can be revived as long as a used lead-acid battery is mechanically sound.

Suppose you have a stack of “dead” lead-acid batteries in your garage and don’t want to buy a new battery for your specific need. 

In that case, this article can be a good search that guides you further because de-sulfation methods have been used here that are revolutionary and effective than standard methods.

Before going through the process of De-Sulfate, the malfunctioning cells need to be identified first.

How Does Battery-Sulfation Occurs

When the battery is deprived of full charge, sulfating occurs; It builds and remains on the battery plates.

When there is too much sulfating, it can convert the chemical to electrical conversion and significantly affect the performance of the battery.

Effects Of Sulfation in Batteries

When sulfates form in your battery, the following can happen:

  1. Long charging time.
  2. Heat build-up
  3. The short time between charges
  4. It dramatically reduced battery life.
  5. Complete battery failure.

Due to Sulfation

All lead-acid batteries will accumulate sulfation over their lifetime because it is part of a battery’s natural chemical process. But, sulfation creates and causes problems;

  1. The battery is overcharged.
  2. Or is stored above 75 degrees.
  3. A battery is stored without a full charge.

But we can reconditioned it back.

Identify the Bad Cells:

[ 1 ] Charge your batteries for at least 12 hours. After that, disconnect the batteries from the charger and allow them to rest for 10 minutes.

[ 2 ] Open all battery caps. If you have sealed lead-acid batteries, search the web for a guide on how to open their caps.

[ 3 ] Fill water in each box and keep an optimum level. It is essential because sparks will be produced in later parts, and the air column in the compartments containing hydrogen and oxygen can explode and blow acid on your face. 

[ 4 ] The higher the water level, the lower the explosive air column, and the less likely it is to flash on your occasions. Use the torch to observe the water level meniscus.

[ 5 ] Measure the terminal voltage (12 v) of the battery. The full charge battery should be in the 12v range from about 11.8v to 13.0v.

If you have something less than 11.8v, there is a very high probability of cell imbalance in which one of the cells (out of 6 cells) has a problem.

[ 6 ] Measure the voltage of each cell and identify the cells with low voltage. Attach the multimeter probe to one of the terminals and immerse another search in the cell solution.

Continue along with the cell pores. A suitable cell should have at least 2v. 

[ 7 ] Remember the corroded cells and note that due to the massive, dense formation of lead sulfate crystals, their plate will have different colors than other cell plates, which are non-conductive.

Related Article: 7 Ways to Prolong The lifetime of Deep Cycle Batteries.

The following are the methods of the De-Sulphation process:

  • Attach a battery trickle charger or an automatic smart charger to your old lead-acid battery, and allow continuous charging for about a week to 10 days.

Prolonged charging rates dissolve the de-sulfate that kills the battery and enable it to hold a reusable charge.

  • While anti-sulfating devices are available that will apply pulses to the battery terminals to prevent and reverse sulfating on healthy batteries, they will not solely replace the damage and are not always recommended.
  • Add a chemical de-sulphate(or) to the filling ports on an old lead-acid battery. The chemical dissolves sulfate and regenerates old and new batteries alike.

Some preventive measures should be taken before doing the above steps yourself:

  1. Wear goggles and gloves when working with lead-acid batteries.
  2. An old battery should have an electric cell and plate sound and functional. If these critical components of the battery are damaged in any way, your old lead-acid battery will never regenerate.
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Mainly the two types of Sulfation can occur in your lead battery; Reversible and Permanent

Their name has an impact on the effects on your battery. If the problem is identified early enough, it is possible to reverse the battery’s Sulfating.

However, doing so should only be done by someone with professional experience working with lead batteries, such as retail outlets where your battery was initially purchased.

Permanent-Sulfating occurs when the battery is in a low state of charge for weeks or months. Although these can sometimes be salvageable, it is unlikely that restoration is possible.

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Software consultant in Business
Software consultant in Business
Ashish Tiwari

I am a web developer by profession but a blogger by passion. Simplicity is the key to happiness. Over all I have 10 years professional experience.

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