Solar Batteries & Accessories

The solar battery – solar energy at any time

Really get out into untouched nature. Leave civilization behind. Being self-sufficient and free to choose your location without having to do without your faithful companions such as smartphones or laptops? Thanks to mobile photovoltaic systems, this is not a problem. And this type of power generation is particularly sustainable and environmentally friendly. In the ideal case, the sun provides us with plenty of energy every day “free of charge”. With the help of the systems, this is made usable and supplies e.g. the mobile home, the houseboat or devices for daily use such as forklifts and work platforms. However, the sun is often a fairly unreliable source of energy, which allows itself a long break, especially at night. This is where solar accumulators come into play. They store the energy produced by the PV system during the day so that it can be called up again when it is needed. This is especially the case when the system produces either too little or no electricity.

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Solar battery for solar energy storage system

Solar batteries, also known as solar accumulators or solar accumulators for short, are accumulators that have been specially developed for use in photovoltaic systems or are simply used for this purpose. They are used especially in stand-alone systems to store the energy generated with solar modules and as backup batteries when operating larger consumers. The term is also often used generally for batteries installed in solar power applications, even if they are not specified for this.

Which batteries for energy storage by solar systems are there?

Basically, a battery for solar storage is technically structured like a normal rechargeable battery. However, they are available in different types, which differ e.g. according to the flexibility of the possible uses, storage capacity, or construction. So think about the demands you have on your power storage in advance. Below is a brief description of the common models.

AGM solar batteries

Since these batteries are sealed with fleece, they are well protected against leakage. That makes them location independent. Therefore, solar energy storage is ideal for use on ships and boats. The technologically mature lead-acid batteries have been tried and tested many times over, are inexpensive to buy, and have high cycle stability. When purchasing, one should consider their high weight. Also, AGM solar batteries should not be discharged more than 50% if possible. Another advantage of AGM batteries is their large power reserves, which can be called up immediately even at low temperatures in winter. For optimal loading, use one of our intelligent chargers.

Gel solar batteries

Because the electrolyte is bound in gel form (silica and lead), these solar batteries are leak-proof and almost maintenance-free. This makes them very well suited for use on ships and boats, among other things. The depth of discharge is higher than that of AGM wet batteries. If necessary, they can also be discharged deeper than 70%, whereby it should be noted that the number of cycles decreases with increasing depth of discharge. In the field of solar technology, lead-gel batteries have proven themselves many times over. Gel batteries are similar in weight to AGM batteries, but due to the increased internal resistance, you have to allow for more time when charging. Compared to AGM batteries, gel batteries are in the middle price segment. With regard to your purchase decision, the advantages of this battery technology can be summarized as follows: Gel batteries are particularly resilient, robust, and low-maintenance.

Lithium-Ion Solar Battery

Lithium batteries (LiFePo4) are able to store electricity for a particularly long time and with little loss. They have compact dimensions and are particularly light in comparison to other battery types. They also impress with their long service life and are versatile and more powerful than e.g. gel solar batteries and AGM solar batteries. Discharging up to 90% is not a problem and does not affect the service life. Lithium batteries are also maintenance-free and can be installed in any position. However, a complex manufacturing process in which expensive raw materials such as cobalt are used makes these solar batteries the most expensive variant.

Which solar battery should I buy?

No matter which power storage technology you choose, a solar battery can be a real asset for a camping trip, for example. However, each has its specific advantages and disadvantages. Choosing the right battery depends on various factors and cannot be answered in general terms. Before you buy, determine the space you have and calculate your energy consumption. Should it be solid and cheap – then take a look at the corresponding AGM solar and gel solar batteries. If you want the ultimate in state-of-the-art technology, then there is no way around a lithium-ion solar battery. Also remember: the best battery is useless if the wrong charging method is used. Find out beforehand what needs to be considered with your battery.

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