Top 10 Best Solar Battery of 2020 – Reviews

Finding the best solar battery can be a challenge due to all of the factors that have to be considered. When consumers are choosing a solar battery they have to consider depth of discharge, capacitance, efficiency and battery-life. All of these considerations make it feel like a person has to be a electrical engineer to find the right model. Fortunately, that doesn’t have to be the case because I’ve taken the opportunity to list ten models that I feel are the best solar battery types that are currently available. Each of these batteries have the power and durability that are needed for solar power applications.

Best Solar Battery – Top List

10. Mighty Max 12-Volt 200Ah SLA AGM

This state-of-the-art unit delivers power when the user needs it. It’s a sealed lead acid rechargeable battery that has a calcium-allow grid and absorbent glass mat technology that delivers both performance and service life. It can be used for both cyclic and float applications and can be used in enclosed and indoor environments. This 12-volt 200Ah unit is 20.75-inches by 8.11-inches by 8.43-inches and weighs approximately 114.6-pounds. This product has a long service life and deep discharge recovery and can be mounted in any position. It’s also shock and vibration resistant as well.


9. Chrome Battery 12V 35Ah Rechargeable SLA Battery

This sealed acid battery was originally designed for use in wheelchairs, scooters, emergency lighting and as a UPS battery but has been used by solar panel enthusiasts with their solar power starting kits. It weighs approximately 23.5-pounds, is 6.46-inches by 7.68-inches by 5.12-inches and uses a T3 terminal system. It’s manufactured using AGM technology and lead calcium allow that creates a battery that delivers high-performance but remains virtually maintenance-free. This product also has fiberglass mat separators that allow it to be resistant to vibrations and other extreme conditions.


8. Vmax Charge Tank AGM Deep-Cycle 12V 155310Ah SLA Unit (2-Pack)

Made using custom-made military grade plates and with a float lifespan of up to twelve years, this set of solar batteries is designed to be used with a variety of different smart chargers, wind turbines, solar panels and inverter systems. They’re approximately 13.5-inches long, 6.8-inches wide and 11.3-inches high and weigh around 90-pounds. Each of these batteries is 12-Volt 155 Ah each for a combined total of 310 Ah when used together. This makes them a good battery to use for a number of different applications and are designed for long life.


7. Expert Power 12-Volt 20Ah Rechargeable 2-Pack

This 2-pack of batteries are designed to deliver performance and power without delivering a lot of problems. These 12-Volt 20Ah sealed lead acid batteries are made with absorbed glass matt technology and are designed to operate in a wide variety of temperature ranges. It’s also constructed in a way designed to make it more durable and less prone to vibrations than some other ones that are currently sold. This makes these batteries good for a number of different applications from solar collectors and wind turbines to emergency systems, scooters, and lighting equipment.


6. Mighty Max 12-Volt 100Ah Deep Cycle Battery

This SLA rechargeable unit is approximately 12.17-inches by 6.61-inches by 8.3-inches and weighs around 63.93-pounds. It’s designed to have a deep discharge recovery, to operate in a number of different temperatures and to deliver to its users a long service life. It is also designed to deliver a high discharge rate and is basically maintenance free since water never needs to be added to it. This unit can be mounted in just about any position and is designed to be shock and vibration resistant. All of these features make this a trusted battery for a number of applications from solar collectors to security systems.


5. Mighty Max ML22-12 Pro Series

Manufactured using absorbent glass mat technology that has a valve-regulated design, this heavy-duty battery is designed to hold up to most operating conditions. It is 7.13-inches by 3.01-inches by 6.57-inches and has a nut and bolt style terminal. This product provides good performance and service life when it’s used for either cyclic or float applications. This 13.01-pound battery has high discharge rate, deep discharge recovery and can be used in a wide variety of different operating temperatures. And since it is also vibration and shock-resistant, it can be used in even harsh conditions.


4. Expert Power EXP12200 12-Volt 20Ah Unit

This battery has a number of features built-into it that ensures that it’s not only tough but also safe as well. It’s made using an impact resistant case that is made from non-conductive ABS plastic and is resistant to heat, vibration, and shock. Under this layer is a sealed AGM battery that keeps the acid sandwiched between fiberglass mats that along with valve-regulation ensure that the battery doesn’t spill and is safe to be used in any position possible. This 20-Volt 20-Amp battery can also be used in a wide variety of operating temperatures and is designed to last a long time.


3. Universal UB121000-45978 12-Volt 100Ah Deep Cycle AGM

This sealed acid battery is manufactured using AGM technology which ensures that it’s not only tough but that it’s also safe and won’t spill no matter which position it’s mounted in. This unit is 12.17-inches by 6.61-inches by 9.16-inches and weighs around 63.93-pounds and is resistant to both vibration and shocks. When used appropriately and to all specifications, this battery will only need to be replaced every 3 to 5 years. This deep cycle battery is ideal for a number of different applications and will hold-up to day-to-day use.


2. Vmax Charge Tank Deep Cycle 12-Volt 125Ah Rechargeable

Designed to have a float lifespan between 8 and 10 years, this battery has a number of features which ensures it has a long life. It’s made using military-grade custom plates and has recombination capabilities that ensure no dangerous fumes escape from it. This heavy-duty 12-Volt 125Ah AGM deep cycle battery can be used for a variety of different applications including, but not limited to, solar panels, turbines, inverter systems and smart chargers. This makes this unit an ideal choice for anyone who needs a battery that will last a long time and deliver the power they need it to deliver.


1. Mighty Max ML35-12 12-Volt 35Ah Deep Cycle Model

Employing a heavy-duty and advanced calcium-alloy grid that’s paired with AGM technology, this battery is designed not only to deliver the power required for a wide variety of applications but is also designed to be long-lasting and durable. It can be mounted in just about any position, can be used in a wide variety of different operating temperatures, has a high discharge rate and a deep discharge recovery. All of which makes it an ideal unit for not only solar energy collection and energy storage systems but also for any number of other applications, including not only float applications but also cyclic as well.


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Solar Battery Guide

For greater storage of energy from your panels, you need a quality solar battery but how can you tell a good one from a bad one? Getting this right can help you to make the most of your solar panels as a whole which is vital as they can be difficult to replace so you don’t want to have to do it too often.

The better solar batteries tick certain boxes than low-quality offerings struggle with. Once you know what to look for, you can enjoy better storage and long-lasting energy. The following guide will help you get this right.

How Does A Solar Battery Work?

The energy your solar panels produce needs to go somewhere when it is not being used, and a solar battery is that place. It is converted into DC (Direct Current) energy before the inverter turns it into AC (Alternative Current) that you use in place of your regular energy source at home.

The most common types of solar batteries are 120V and 230V and are used in both private and commercial properties.

What To Look For In A Solar Battery


Because they are such a heavy-duty battery, they can be expensive. Still, there is no need to stretch your budget as you will find plenty of reasonably priced products. Plus, the savings you make over time in your energy bills make it an astute purchase.

The lifespan of the battery is key here so make sure it has a reputation for durability.


This has to match the needs of your system so choose wisely. Also, it is hard to rectify if you install the wrong one although 24V and 48V are the most common in a lot of solar power storage.

Battery Storage

The solar battery you purchase needs to be able to store enough energy for it to be worth investing in. Otherwise, you could end up missing out on solar power and having to pay for regular power.

Power Rating

On top of battery storage, it also needs to be able to put the power to work, and in an efficient manner. There is little point in burning through all the power in a short amount of time. More storage and power means the solar can work on more appliances in your home for longer.

Easy To Install

The list of battery types below should give you an indication as to how difficult installing certain types of batteries can be. This being said, you also need to consider how much space you have to accomodate certain batteries.

The most convenient in terms of installation is lithium-ion but whatever you choose, if you are unsure as to how to install it properly, consult an electrician.

Charge Time

The faster your solar battery charges, the quicker you can use the energy and get it to storage more after. Although certain types of batteries are typically faster, it is also important to make sure that the brand you are looking at charges efficiently. Both Gel and lithium-ion batteries charge well.

Types of Solar Batteries

Flooded Lead Cell Batteries

A common solar battery that is one of the cheapest and reliable yet has a fair amount of downsides to consider. First of all, you need to keep them secure and ventilated to avoid leaking as they produce a gas. Also, they require regular checking to make sure everything is as it should be including the plates that should be submerged. This alone will require monthly attention to ensure the water levels are as they should be.

Not to mention they are larger than others.

GEL Batteries

Using silica to turn battery acid into a liquid, they are less durable but require next to no maintenance. They can be a decent option for those who want an off-grid system that they do not have to keep checking on. Still, they aren’t as reliable and are suspectable to overcharging because of their low charging voltage.

To top it all off, they are pretty expensive compared to flooded lead-acid batteries.

AGM (Absorbed Glass Mat)

Another lead-acid battery the battery plates are separated by a glass mat. Better for warmer climates as they can tolerate warmer conditions better than a lot of other batteries and require less maintenance since they do not leak. A lot of people like them because they are lighter, less bulky and have a good lifespan.


Popular but can be more expensive, they have a large storage capacity, are reliable and require very little maintenance. Also known for being efficient in how they use the power, Lithium-ion batteries are arguably the best solar battery available.

A great option as they last a long time but expect the initial outlay to be a lot higher than the other options.