Best Deep Cycle Batteries For Solar (2022): Reviews & Comparison

Some homeowners with solar panels installed on their properties have larger battery banks, allowing them to continue operating more than the absolute necessities during a power outage.

A good rule of thumb is to get sufficient solar deep-cycle batteries for at least a week's worth of charge since this will ensure that your solar panels continue to function normally and are unaffected by any issues.

However, it might be challenging to determine which brand of the battery would be the most beneficial. This blog will help you learn about the most reliable and tested batteries for your needs.

Unser Tipp
Vmaxtanks AGM 12V 125Ah Deep Cycle Battery

The VMAXSLR125 AGM Rechargeable Battery offers a class-leading battery capacity of 125 Ah and a voltage of 12 volts. This maintenance-free battery is perfect for use in a wide range of applications, and features military-grade custom plates for extra durability. With a very low self-discharge rate, this AGM battery is ideal for use in vehicles, boats, RVs, and more.

Wir erhalten eine Provision, wenn Sie einen Kauf tätigen, ohne dass Ihnen dadurch zusätzliche Kosten entstehen.

Types of Batteries for Your Solar System

Here are some of the best batteries for your solar system: 

Lithium-Ion Batteries


    • Lithium-ion batteries are one of the newest battery technologies available, and they have taken the market by storm. It provides a high amp-hour capacity, a relatively lightweight build, efficiency, and a long lifespan without needing much maintenance. It also charges quickly, which is essential in solar energy use as you want to be able to move your power around at will.
    • When it comes to durability, efficiency, and cost-effectiveness in solar power systems for large buildings like warehouses or factories, Lithium-Ionen-Batterien are just about the best thing.
    • Another perk is the cost, as they tend to be four times more expensive than other solar battery types, but when considering how well it performs in many cases, it's worth spending that little bit of extra cash.

Sealed Lead-Acid Batteries


    • These are the most common types of batteries and provide substantial power in solar energy storage options.
    • These batteries are known for being incredibly durable, providing a long runtime with minimal maintenance needed before they need replacing. They are inexpensive to purchase, making them affordable for almost any budget. 
    • These batteries come in various sizes and shapes and are made for multiple purposes. They have a long life cycle and are well-suited for use with solar energy systems, but they aren't the am besten option for maintaining the power even after it's been stored.
    • They don't self-discharge if stored away from a power source either, so these are great to use at remote locations like hunting lodges or campsites that only get occasional visits. They're spill-proof and non-hazardous.

AGM Batteries

  • These are a type of lead-acid battery. The difference between an AGM and other types is the liquid electrolyte. Rather than being mixed in with the rest of the components, they're suspended in a nonreactive polyethylene gel. Less maintenance is required to keep them in proper working order, making them great for long-term solar energy storage.
  • The lifespan of AGM-Batterien is around 5 to 9 years, depending on how they've been used and the charging applied. 
  • The more you discharge them, the shorter their lifespan becomes, which means if you use these batteries for a solar battery bank, ensure that they have some power available at all times to lengthen their lifespan.

Flooded Lead Acid Batteries

These are the oldest types of lead-acid batteries that are still used today, yet require the most maintenance of any other battery type.

  • These batteries have a strong power output, but they must be frequently topped off with distilled water to ensure that corrosion doesn't build up on the bottom.
  • They also need to be checked at least once a month to ensure that none of the acids have leaked out and that they're still in working order.
  • These batteries are perfect for people who want complete control over their solar power systems. They're less expensive than lithium-ion, but you'll need to pay more attention and maintain them regularly.

Gel Batteries

  • These batteries come in a traditional lead-acid format. Still, the electrolyte is suspended in gelled liquid, giving them a longer shelf life than other types of solar battery storage options.
  • They also have excellent charge acceptance and discharge rates and are resistant to high temperatures, so they're a perfect option for long-term solar energy storage. They could be left dormant for years without being charged or maintained.
  • Like AGM batteries, you'll need to ensure that they get enough power through charging to keep them going strong over the years, but this isn't much of an issue if you secure a solar charge controller with proper hookup capabilities.

How Many Batteries Do You Need for Your Solar Panel?

The number of batteries you need varies greatly depending on what you want to have powered and how much wattage your solar panels will produce. A safe estimate for most people in areas that average about 1000 watts per year would be 20–30 batteries, although this may be too many for some.

How does this work?

Solar batteries store the energy generated during daylight hours, converting it into DC power. This means they need a converter to turn this form of electricity from solar panels back into AC for use in electronic devices and other things that require an outlet.

At home, you generally use either 120V or 230V. You will also need a solar charge controller to ensure the energy produced by your panels doesn't overcharge your batteries and keeps them from running out overnight when they are not being charged by daylight.

Battery Life Span

If you take care of your batteries, then they can last a long time. An excellent way to maximize their life span is by charging them regularly so that the power stored stays as strong as possible throughout the years. It's also important to be careful about how deep you discharge them, so they don't get damaged over time through repeated use.

Solar power systems require batteries to store the electricity, and these are rechargeable. The lifespan of a battery depends on how often it is being recharged: if you're planning on using your system only when there's ample sun, then expect each charge to last between 5-15 years; but more typically, they'll need charging at least once during its lifetime which will be 20-30 years.

Factors that affect the longevity of batteries for solar panels include:

  • After a long day in the sun, solar batteries can be drained and need to be recharged before they work again.
  • Die Art der battery you get determines how often it needs to charge up after use and what kind of overcharging protection it has from getting too hot or cold.
  • Solar batteries are not at all autonomous. They require regular maintenance to remain operational, and the work that must be done on them varies depending on how long they have been in use.

What Is The Best Deep Cycle Battery For Solar Needs

Choosing the correct solar battery for your needs is not a decision that should be taken lightly. There are many factors to consider, and you want to ensure you get it right so you don't have to spend more money in the future. You may want to consider the battery capacity, installation, charging time, budget, and battery lifespan.

 3 Best Solar Batteries - Reviews

The high-quality batteries listed below will do a great job of powering your home or business when you need them most.

1. WindyNation AGM Sealed Lead Acid Battery

Zweiter Platz
WindyNation AGM Deep Cycle Battery

WindyNation 100 amp-hour, 12 Volt heavy duty deep cycle AGM sealed lead acid batteries with heavy duty plates are designed for deep, repetitive discharges. Ideal for all types of off-grid power: Solar Systems, RV's, UPS, Off shore Marine power, Telecommunications, Portable tools, etc.

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Top Feature/s:

Type of battery: Lead-Acid AGM (Sealed)

Life span: 10-12 years

Voltage: 12V

Amp hours: 100Ah

Advantage/s:

  • This durable battery is perfect for long-lasting power and high capacity. It lasts up to 10 years in most applications, making it a great option year-round.
  • The heavy-duty plates have been designed for deep, repetitive charges and will last up to 12 years with low energy use. They're perfect for RVing off the grid or living long-term offshore Marine Leben.

Disadvantage/s:

  • This battery, though very dependable and long-lasting for low-level usage only, is not the best option if you need a power source that lasts long hours of high energy use.

Our recommendation/s:

This is the battery for you if you need a low-power, affordable option. If your energy needs are short-term or minimalistic, this is perfect because it requires little maintenance and will keep on powering through as long as needed.

It comes from a highly reliable manufacturer, sure to offer their customers outstanding service with any problems arising so they can get back up and running in no time.

2. Vmax Tanks VMAXSLR125 AGM Deep Cycle Battery

Unser Tipp
Vmaxtanks AGM 12V 125Ah Deep Cycle Battery

The VMAXSLR125 AGM Rechargeable Battery offers a class-leading battery capacity of 125 Ah and a voltage of 12 volts. This maintenance-free battery is perfect for use in a wide range of applications, and features military-grade custom plates for extra durability. With a very low self-discharge rate, this AGM battery is ideal for use in vehicles, boats, RVs, and more.

Wir erhalten eine Provision, wenn Sie einen Kauf tätigen, ohne dass Ihnen dadurch zusätzliche Kosten entstehen.

Top Feature/s:

Type of battery: AGM

Life span: 8-10 years

Voltage: 12V

Amp hours: 125Ah

Advantage/s:

  • VMAXSLR125 AGM batteries are the perfect choice for any situation where an awkward angle or a side-mounted battery is required.
  • Along with being great performers, these high-quality AGMs offer 8 to 10 years of lifespan and have been specifically designed for use in solar and wind energy applications.
  • It is a military-grade battery. The plates are custom-made, and the quality of this item will not disappoint you at all.
  • The technology is an excellent fit with solar-powered panels and wind turbines for backup power or running small buildings like hotels.

Disadvantage/s:

Our recommendation/s:

This one is the best option for solar backup, as it will have fully submerged plates and last longer. It is made from high-quality materials and has excellent longevity.

3. Universal Power Group AGM SLA Deep Cycle VRLA Battery

Auch großartig
Universal Power Group 12V Batterie

Die Universal Power Group 12V-Batterie ist eine wartungsfreie, auslaufsichere und stoß- und vibrationsfeste Batterie. Die UPG 12V-Batterie hat eine sehr langsame Selbstentladung, die für die längste Haltbarkeit aller herkömmlichen Blei-Säure-Batterien auf dem heutigen Markt sorgt. Mit ihrer einjährigen Garantie ist diese 12-V-Batterie perfekt für Ihr Auto, Ihr Schiff oder Ihr Freizeitfahrzeug.

Wir erhalten eine Provision, wenn Sie einen Kauf tätigen, ohne dass Ihnen dadurch zusätzliche Kosten entstehen.

Top Feature/s:

Type of battery: Lead-Acid AGM (Sealed)

Life span: 6 years or 500 cycles

Voltage: 12V, 24V, or 48V

Amp hours: 100Ah

Advantage/s:

  • It comes from a trusted brand and is super low maintenance. Depending on what you use it for, you might not even have to do any upkeep with it.
  • This solar panel is designed to work well with both wind and solar energy systems. It's also cheaper than much of the competition.

Disadvantage/s:

  • There were complaints about its battery life, but not alarming. Some have reported it as arriving only half-charged or even fully discharged, which isn't great news.

Our recommendation/s:

If you're tired of the hassle and expense of most batteries, this is a great option. This battery is so versatile that you can install it at any angle and position without fear of the plates running into trouble. This would be an excellent option for people who don't want to worry about their batteries getting dirty or requiring maintenance.

Schlussfolgerung

All batteries will lose their power or deteriorate over time. Maintenance is the key to getting the most life out of your batteries when you use them for solar energy storage. Thus, it would be best to consider choosing the best Deep-Cycle-Batterien for solar energy. Do thorough research before making your decision to avoid any regrets. Weigh their advantages and disadvantages in terms of performance and capacity as these will help you to save more.

Über den Autor, Phil Borges

Phil Borges ist ein Liebhaber von Batterien. Er hat viel über Batterien geschrieben und liebt nichts mehr als Diskussionen über die neuesten Innovationen in der Branche. Er weiß sehr genau, wie Batterien funktionieren, und ist immer auf der Suche nach neuen Möglichkeiten zur Verbesserung ihrer Leistung.

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