Top 6 Best Batteries for Solar Power Storage

Best Batteries for Solar Power Storage FAQ

1. What Are Batteries for Solar Power Storage?

These are deep cycle batteries that are added to the grid connection to provide adequate storage for electricity produced by the solar panels and other sources of renewable energy.

2. What Do Batteries for Solar Power Storage Do?

They store the excess power that gets produced during the day and makes it available when there is low production of solar power.

3. How Do Batteries for Solar Power Storage Work?

The direct current electricity generated by converting sunlight is inverted into AC which is then stored by the battery storage system so that they can be used later on.

4. Where Can You Buy Batteries for Solar Power Storage?

The best batteries for solar power storage can be bought on Amazon, eBay, and other online and offline retailers that sell genuine solar batteries.

5. What Are the Different Types of Solar Power Storage?

Batteries made up of the following chemical compositions; flooded lead-acid batteries, AGM batteries, and Gel batteries.

6. How Much Will It Cost to Install a Solar Storage?

A lot of factors determine the cost of the solar storage system. One factor that may determine the overall cost is whether you are installing a battery to an existing solar array. If this is the case, then it can cost approximately $5000 more.

How We Reviewed

We conducted extensive research and came up with a list of best batteries for solar power storage. We reviewed the flooded lead-acid batteries, the gel batteries, the AGM batteries, and the lithium-ion batteries.The criteria we used involved comparing the products’ features, capacity, and power, depth of discharge, battery life and warranty, pros & cons, pricing, and ratings. Using these criteria, the following were obtained which helped identify the best batteries.

Flooded Lead-Acid Batteries

These are for off-grid use. The charging time of the batteries may vary and may take time before reaching 100%. The lifespan may be up to 15years if well maintained. The discharge and charge cycles may vary between 300-500 cycles. Requires little maintenance, and it is the cheapest battery for solar panel installation.

Gel Batteries

The lid of these batteries are sealed, and they generally use silica gel as the electrolyte. This is where the things are suspended. The charging time may take a few hours. If well maintained, it can reach up to 8 years of prolonged life.At 50% DoD, the capacity of the battery can go up to 1100 cycles. It requires little maintenance or none. It is not that safe and may emit some explosive gases that may as a result cause explosion. It is therefore imperative that much caution is taken when charging them. The cost of these batteries is very high.

AGM

The electrolyte is held in place with thin glass mats. It is a perfect choice of a solar storage battery for an off-grid setting. These type of batteries are known to be a fast charge; up to five times the speed of flooded lead-acid. With proper maintenance, these batteries can last up to ten years.Under normal applications, one can expect about 700-1000 cycles. These batteries are also maintenance free and do well in both high and low temperatures. Caution must be taken when recharging them because they are not safe to use due to the gas they emit. They are cheaper compared to the gel batteries.

Lithium-ion batteries

Lithium-ion phosphate batteries are widely used. They may take three hours or sometimes longer to reach full charge. If the quality of the battery is high, then the lifespan of the battery may last up to approximately 15 years. Possible cycles of the battery range from 3000 to 5000 cycles. The batteries require no maintenance, however; they do not do well in high temperatures. They are quite expensive to purchase.

Overall Price Range of Best Batteries For Solar Power Storage

Depending on your Solar Power Storage, and the seller, the batteries should cost around $400-$7000. The highly priced models might get you a quality product that requires little to none maintenance. The low-priced models may require a lot of attention and supervision.

What We Reviewed

  • VMAXtanks SLR125 AGM Deep-Cycle Battery
  • TROJAN L16RE-2V 2V Flooded Battery
  • Renogy Deep-Cycle Pure-Gel Battery
  • 100 Ah LiFePO4 12-Volt Deep-Cycle Battery
  • LG Chem Resu 10H-SEG Lithium-Ion Battery
  • Renogy Lithium-Iron Phosphate Battery

VMAXtanks SLR125 AGM Deep-Cycle Battery

Vmaxtanks Vmaxslr125 AGM Deep Cycle 12v 125ah SLA rechargeable Battery for Use with Pv Solar Panels,Smart chargers wind Turbine and Inverters

Features

One of the key features of this product is that it has a lifespan for about 8-10 years. This is a float service. It has gained in popularity because it is very safe to use and has no emission of dangerous fumes or gases. This makes it environmental-friendly. This feature is enhanced by its recombination ability. It is a heavy duty battery of 12V AMP Hours and 125Ah weight and 75lb size. The battery type is AGM.

PROS

  • Long lifespan
  • Affordable
  • Able to hold a static charge for long
  • Work well in cold weather
  • Environmental friendly and non-hazardous
  • Requires little maintenance

CONS

  • They have a shorter life cycle

Durability

We gave the durability of this product 4 stars.

Capacity

The total amount of electricity that this product can store is 125Ah per 12V.

Warranty

This product comes with a one-year warranty from the manufacturer.

TROJAN L16RE-2V 2V Flooded Battery

TROJAN L16RE-2V 2V 1110AH AT 20HR FLOODED BATTERY

Features

Key features of this product include; its chemical composition is flooded lead acid, 2v Voltage, has an L terminal, its capacity in hours, ranges from 6, 20 to 100, its length, height, width, and weight are 17.688, 7, 11.625 and 119lb respectively. It has a volume of 1439.32 CIN.

PROS

  • Work well with large appliances
  • Have a large reservoir
  • Corrosion free terminals
  • They work in extreme temperatures
  • Have large storage compared to the 6-volt size

CONS

  • Not safe to use

Durability

We gave the durability of this product 4 stars.

Capacity

The total amount of electricity that this product can store is 1110Ah per 2V.

Warranty

This product comes with a five-year warranty from the manufacturer.

Renogy Deep-Cycle Pure-Gel Battery

Renogy RNG-BATT-GEL12-200, Gel Battery 12V 200Ah

Features

One of its key features is that it can deliver up to approximately 1000cycles at 50% depth of discharge. The battery is well known for its pure Gel feature. It also has a PE compound separator, for equal distribution of the electrolyte.There is also prevention of breakage by the sealed construction and the valve regulation. This makes sure that the electrolyte is maintained at a liquid state. The lead-calcium grid enhances low self-discharge.This product has a long life span of about 10 years that is facilitated by the heavy duty lead-calcium. They also operate well under optimal temperatures. The batteries have explosion-proof safety that prevents the production of gas thus maintaining high security.

PROS

  • Gives maximum storage
  • Requires no maintenance
  • Have a reliable performance
  • They have a low self-discharge

CONS

  • Expensive
  • Sensitive to overcharging
  • Not compatible with flooded or AGM cells

Durability

We gave the durability of this product 5 stars.

Capacity

The total amount of electricity that this product can store up to 200Ah per 12V.

Warranty

Kindly contact the seller directly regarding the warranty information for this product.

100 Ah LiFePO4 12-Volt Deep-Cycle Battery

 100 Ah LiFePO4 12 Volt Deep Cycle Battery

Features

This product is known to be safe and most reliable among other deep cycle batteries. It is constructed with no harmful material and weighs 29lbs. It is also popular for doing well in both hot and cold temperatures. It has a long life of 8 years.It can last for about 3000-5000 acceptable cycles of up to 100% DoD. 14.4-14.6 are the charging voltages and can also recharge very fast. It produces a 100amp output and uses lead acid.Its measurements are 12.75*6.875*9 (L*W*H). The battery type is AGM.

PROS

  • Replaceable if it fails within the warranty period
  • Very safe
  • Strong and reliable
  • Recharges fast

CONS

  • It is expensive

Durability

We gave the durability of this product 5 stars because there were a lot of positive reviews.

Capacity

The total amount of electricity that this product can store up to 100Ah per 12V.

Warranty

This product comes with a 10-year warranty from the manufacturer. 8-year full replacement warranty and 2-year prorated.

LG Chem Resu 10H-SEG Lithium-Ion Battery

LG CHEM RESU10H-SEG 400VDC 9.8 KWH PRIMARY LITHIUM-ION BATTERY

Features

Key Features of this product include; a lithium-ion battery type with a voltage of 400v. It has a 5-hour capacity and a warranty of 10 years from the manufacturer. It has a bolt terminal type. The length, width, height, and weight are 35.7, 29.3, 8.1 and 214.0lb respectively.The product has a maximum power of 5kW and a peak power of 7Kw. Total energy it stores is 9.8Kw while the usable energy is 9.3Kw. It has a direct current efficacy of about 95%It has a compact size designed to allow it to be mounted on walls or floor standings.

PROS

  • Powerful performance
  • Very safe
  • Safe
  • Easy to install

CONS

  • It is expeIt is expensivensive

Durability

We gave the durability of this product 3 stars.

Capacity

The product comes in three different sizes with a capacity of 3.3kWh, 6.5kWh, and 9.8kWh respectively.

Warranty

This product comes with a ten-year warranty from the manufacturer with a 60% performance guarantee in the period.

Renogy Lithium-Iron Phosphate Battery

 Renogy Lithium Iron Phosphate Battery 12 Volt 170 Amp Hour

Features

The capacity of the lithium iron phosphate battery is large enough to hold about four times the capacity of other regular lead-acid batteries, without making changes in the size and height. It has a safety and protection design. This is where the contents of the battery are fully sealed to make sure that there is no leakage, corrosion or even acid mist.This product has great performance generally on endurance and storage with a low self-discharge of about 2-3%. Compared to regular lead-acid batteries, this product has twice the life service and has long cycles of about 2000 times.Designed to replace the conventional solar battery storage such as Gel batteries, AGM or even the LFP battery. Weighs about 25lbs and is very light, compact and is known to be more careful compared to lead-acid batteries.

PROS

  • Stores more power
  • Safe to use
  • Low self-discharge
  • Longer lifespan
  • Requires no maintenance

CONS

  • Expensive

Durability

We gave the durability of this product 5 stars.

Capacity

The total amount of electricity that this product can store is up to 170Ah.

Warranty

Kindly contact the seller directly regarding the warranty information for this product.

The Verdict

Our list should be able to help in choosing the best batteries for solar power storage. Any further information that may be needed can be acquired from sources that are credible and those that have a good reputation.The kind of solar experience will depend on your choice of battery. If the solar power is to be stored at home, then we shall not recommend the batteries with a gel electrolyte. This is because they are known to be sensitive to the charging voltage.If you want a battery with low installation and high maintenance, then the flooded batteries are ideal, however, for a battery that requires no maintenance then the AGM batteries are recommended.

Janice Friedman
 

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