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If you are dreaming of owning your own best battery for solar application, buying the best is must thing to do. Solar batteries serve as a backup as well as energy storage for solar and can run everything in your house. Solar batteries are not ordinary batteries, like those that can be found in a car. These are so-called slow-cycle batteries that have been specially designed and made for solar applications in the field of wind energy or solar panel. Their main differences lie in their much slower unloading speed and they support the alternating loading and unloading phases much better.


Solar batteries are designed to store the energy provided by solar panels and restore it in electrical form. The solar battery is a device that stores the energy generated by photo voltaic solar panels to provide power, in anticipation when there won’t be enough sunlight. It is a slow-cycle battery, specifically designed for solar or wind applications.

The batteries of phones or laptops operate on the same principle as solar batteries, but the amount of energy stored is not the same. A phone battery stores a few amp hours (Ah), while a solar battery can store several hundred.

A solar battery must, however, to maintain an optimal life, not have a charge rate that is greater than 90%, nor less than 40%. This is why you should avoid connecting the solar battery directly to the panels, but rather behind a regulator so that it optimizes these parameters.
smart solar street bench battery lifepo4

Solar batteries are also called stationary (or semi-stationary) batteries. They work by storing energy storage for solar so as to come up when there is there no sufficient sunlight.

These batteries are thus designed to continuously provide a stable current for a relatively long time while ensuring its recharge, allowing these batteries to perform cycles of production and regeneration. Different types of stationary (or deep cycle) batteries are available on the market (2, 6, and 12 volts).

These different powers will be adapted according to the number of energy production cycles of the solar application. It is actually the repetition of the cycles of charges and discharges that these batteries are adapted, something that a traditional battery cannot do.


There are different types of battery for solar application but, our team of experts has taken their time to analyze the best ones in the market.


The lead-acid GEL battery is composed of standard lead-acid accumulators. It usually provides a voltage of 12 V or 24 V. The open lead battery is economical to buy; however, there are some details not to neglect. In relation to its weight, the power it produces is minimal; in general, this power is 35 WH / kg. It regularly requires hydration and the use of a scale-acid to check the density of the electrolyte. It should be installed in a well-ventilated area to handle oxygen and hydrogen ejections when recharging. It is advisable to save after 30% of discharge, otherwise, it supports nearly 400 cycles of charges and discharges. In addition, it is required to lay flat because it is not waterproof.
solar battery lifepo4

• AGM Battery

AGM is the abbreviation for Absorbed Glass Mat. With a lifespan of 1500 cycles at 30% the AGM battery is ideal for supplying consumers who need a very high starting power. It does not require maintenance. Be careful, however, this battery is resistant to high temperatures and deep discharges. Similarly, in place of the water and acid solution found in the open lead battery, the structure of the AGM battery electrolyte is based on fiber sheet. It’s very expensive, but it is worth it. First, its energy output relative to its weight is good. It can produce an electric charge corresponding to 250 Ah.


This new technology, whose estimated lifespan is 5000 cycles at 50% (more than 10 years normally), is more expensive and more complex to install. They are reserved for portable photovoltaic systems where their large discharge capacity (six times better than lead batteries) is of great interest. A lithium battery contains series-welded cells, and an electronic card, or BMS (acronym for Battery Management System), present to manage the charging and discharging thereof. This very young technology looks promising and is in constant development.

Lithium-Ion batteries can be classified into different categories, but above all, into two main branches, which are lithium metal, and lithium-ion. One of the best and cheapest lithium-ion batteries for the solar system is LiFePO4. This battery can be used in 12V, 24V, 36V or 48V systems at just 29 lbs. and lasts 10 times longer.

When you take a closer look at this battery and the term LIFEPO4 you will discover that is not a brand, but rather a battery model determined by a separate internal technology. If you are not yet familiar with this battery, you must first understand what it is.

The acronym LIFEPO4 battery is an abbreviation of the term “Lithium iron phosphate”. Like any other battery, the LIFEPO4 battery contains positive plates, negative plates, separators, a polypropylene container and a liquid electrolyte. This kind of technology has been put in place in order to overcome the problems that could be encountered with more traditional batteries. In addition to that, they have the ability to adapt to any facility, so you can put it to use no matter what you use them for.
LiFePO4 lithium-ion batteries are the safest and most powerful solar batteries in the market and they surpass all other types of solar batteries you ever think of. The Lithium iron phosphate battery belongs to a generation of Lithium-Ion batteries for solar applications where safety is supreme. Indeed, other battery technologies are now available on the market but Lithium Iron Phosphate is one of the most secure solutions (no risk of explosion).
solar street light battery lifepo4 lithium
The Lithium LiFePO4 batteries have what is called Battery Management System (BMS) that automatically balances cells during charging, discharging and standby. The BMS monitors the voltage and temperature of each lithium-ion cell that affects the operation of the battery.

The LIFEPO4 battery has a cell voltage of 3.2V (against 3.7V for other Lithium NMC type technologies) and a charging voltage higher than 4.2V per cell which must not be exceeded beyond that range. So, it may be interesting to limit the charging voltage per cell. Unlike conventional lithium-ion batteries, the lithium-iron-phosphate battery is also environmentally friendly. It does not include toxic liquids or heavy metals. It is fully recyclable.

The Lithium iron phosphate LIFEPO4 battery is excellently more efficient than any other battery in the market such as: The Lead Battery and AGM Battery.

• Very low weight, 3 to 4 times lighter.

• Extreme compactness.

• Possibility of ultra-fast charging.

• 3000 charge-discharge cycles, equivalent to ten times those of current batteries.

• The capacity of a lead-acid battery decreases when the discharge current increases reason because the chemical process performed slowly. On the other hand, the lithium battery has a restored capacity independent of the discharge current.

• The charge of a lithium-ion battery from an alternator is both efficient and fast compared to lead acid batteries. The only requirement is a battery separator or CDR converter between the starter battery and the lithium-ion battery.

• Low self-discharge rate (less than 10% per year)

• No maintenance


There you have it, if you are looking for the best battery for solar application LiFePO4 battery is one of the best and cheapest lithium-ion batteries for energy storage for solar application.

However, don’t purchase this battery from any battery producer and supplier, carefully choose and look all battery characteristics before you make a purchase.

EnGoPlanet a clean tech company from New York, has a great experience in battery and solar business, so if you have any questions please feel free to visit their web site www.engoplanet.com or contact them info@engoplanet.com or

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