7 Best Deep Cycle Batteries for Solar (2020)

No two batteries are made the same.

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A deep cycle battery is a special kind of battery that is designed to be used over and over again.  Deep cycle batteries are perfect for storing solar power, as the storage will be continuously depleted and recharged.

Of course, no two batteries are made the same and choosing the right one for your solar set up can be difficult.

Deep cycle batteries come in different forms, storage capacities, and price points, so comparing your options and knowing what you need is extremely important.

In order to help navigate the confusing deep cycle battery marketplace, we’ve developed this helpful buying guide outlining our top choices. 

In this article, we will showcase the following top deep cycle batteries for solar in 2020:

  1. Battle Born LiFeP04 12V 100Ah
  2. Powermall 12V 100Ah
  3. VMAX MR127 12V 100Ah
  4. Weize 12V 75Ah
  5. Expert Power 12V 100Ah
  6. Universal Power Group 12V 100Ah
  7. Renogy 12V 100Ah

OUR PICK: Battle Born LiFeP04 12V 100Ah

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Battle Born LiFeP04 12V 100Ah Deep Cycle Battery
If you are looking for the best deep cycle battery for solar, the Battle Bord LiFeP04 may just be the powerhouse you are searching for.  This top of the line product leverages new technology to deliver long lasting solar power.
Battle Born factor is an American company based out of Nevada that specializes in nontoxic, renewable energy solutions. Their LiFe04 is undoubtedly one of the top deep cycle batteries for solar on the market today.Solar Is The Future

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Battle Born LiFeP04 12V 100Ah Review

Lithium-Ion Battery

What makes the Battle Born special is that it utilizes a lithium-ion battery.  Lithium-ion batteries are a newer and more expensive technology than traditional lead-acid batteries.  Although the price tag may be intimidating at first, lithium-ion batteries are said to be even more cost-efficient than older technologies due to their ability to deliver long life cycles.

Lithium-ion batteries are also lighter than lead-acid batteries, and the Battle born is no exception.  This item only weighs about 31 lbs, making it perfect for mobile solar applications such as RVs or van life. 

Warranty and Lifespan

Warranties can be a headache when buying a battery, but Battle Born offers a ridiculous 10-year warranty with its LiFeP04 deep cycle battery.  The lifespan of this item is also expected to be nearly 10 times longer than most lead-acid batteries. 

Versatility

Battle Born’s lithium-ion batteries offer unlimited mounting capacity, as the LiFeP04 can be easily linked together with others of its kind to run a 24, 26, or 48 V system.  If you are planning to continuously upgrade your solar power capacity, you’ll be happy that you have one of these deep cycle batteries for solar storage.

Pros

  • Unlimited Mounting Capacity
  • Incredible Warranty
  • Lightweight

Cons

  • High Price Tag

BEST VALUE: Powermall 12V 100Ah

Powermall 12V 100Ah Deep Cycle Battery
The Powermall is a 12V 100Ah battery, which is pretty standard for small solar power storage applications.  The product is rated at 100 amps and weighs about 58 lbs.
Powermall has introduced a brand new product for 2020 that has set the new standard for affordable deep cycle batteries. Their maintenance-free deep cycle AGM battery is perfect for many solar applications while staying under budget.Solar Is The Future

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Universal Application

This item was built with universal application in mind.  It is crafted with a state of the art, heavy-duty calcium-alloy grid that can perform in both float and cyclic applications. 

So if you are using your solar power at night, or while it is being charged in the sun, the output will be optimized and you will experience less power loss.  

This battery is also built to operate in any condition, and is completely sealed and spill-proof. Its high discharge rate, wide range of operating temperatures,  long lifecycle, and deep discharge recovery will keep any customer satisfied for years of performance.

Warranty

Although the product is new, skeptics can rest easy as the Powermall 12v 100Ah deep cycle battery comes with both a 30-day refund policy and a 1-year warranty.  Batteries tend to have a higher failure right than other solar components, so this is extremely valuable.

Value

As a lead-acid battery, the Powermall will obviously be much cheaper than a lithium-ion battery.  However, when compared to its peers, the Powermall comes at a lower price without sacrificing any quality. 

Pros 

  • Great Warranty
  • Universal Applications
  • Great Value

Cons 

  • New Product, no Performance Records

VMAX MR127 12V 100Ah Review

VMAX MR127 12V 100Ah Deep Cycle Battery
VMAX has produced a number of high quality batteries primarily designed for marine use on boats, but the MR127 is great for solar applications.
VMAX Charge Tanks have a reputation for providing heavy duty electricity storage solutions, and the MR127 is no exception. This truly unique deep cycle battery is a great, affordable option for large solar power systems. Solar Is The Future

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High-Quality Materials

Users can think of the VMAX battery’s performance somewhere between a lead-acid and a lithium-ion deep cycle battery.  The MR127 features heavy duty lead-tin alloys that helps the performance during float and cyclical use, as well as extends the overall life of the system.

This product also is built with an electrolyte suspension system made of absorbed glass matt, which is highly porous but still generally spill-proof. 

It is also worth noting that the custom plates surrounding the box are military grade, and will not erode at the rates of its competitors if the battery gets wet or is exposed to the elements.

Lifespan

One of the highlights of the VMAX MR127 is its excellent lifespan.  If used properly, the battery can be expected to last up to 10 years.  This is on par with a lithium-ion battery, but comes at a fraction of the price.

Of course, battery degradation can occur at a faster rate if the system is not used properly. 

It is recommended that the system is kept above 80% capacity in order to sustain its system efficiency.  This may not be entirely possible if you need to use your entire solar battery’s storage during a cloudy set of days.

Pros 

  • Built Tough
  • Unique Technology
  • Excellent Value

Cons 

  • Requires Careful Use

Weize 12V 75Ah Review

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WEIZE 12V 75AH Deep Cycle Battery
This product is one of the highest rated deep cycle batteries around the web.  The item itself is very capable, when used for its intended purpose.
Weize is a company that made a name for itself creating a wide variety of batteries for motorcycles, wheelchairs, and many other applications. Their new 75Ah deep cycle battery is perfect for a small solar storage setup.Solar Is The Future

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Size

At 75Ah, this battery from Weize comes in a little bit smaller than most others on this list.  However, this also increases its capability. It’s lower capacity makes the physical product itself lighter and smaller, making it easier to store or transport off-grid.

The size of the battery also lowers the price, making it more affordable than some of the 100Ah options on the market.

Applications

Weize’s deep cycle battery is best used for solar applications as a backup.  Despite its deep discharge recovery system, sustained use of this battery will limit its lifecycle, as the low amount of storage will be continuously depleted and replaced.

It is also perfect if you are using a small scale solar application such as a sump pump or electric gate opener.  

Performance and Warranty

If your project is scaled correctly, this battery is rated to outperform most of its competition.  Its calcium-alloy grid provides high performance in both float and cyclic instances, as well as promises a long lifecycle.  The battery comes with a 30 day refund policy attached to a 1 year warranty, so obviously the brand will stand behind their product.

Pros

  • Affordable
  • High Performing
  • Great Warranty

Cons 

  • Smaller in Capacity
  • Limited Capability

Expert Power 12V 100Ah Review

ExpertPower 12V 100Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery
The Expert Power 12V 100Ah is a deep cycle battery that deserves a spot on this list as the cheapest available lithium-ion battery. Its attractive price, however, does have a few drawbacks.
Although lithium ion batteries are technically more cost efficient due to their long life cycles, they can be 8 to 10 times more expensive than traditional lead acid batteries. This product from Expert Power hopes to bring some affordability to the new lithium ion space.Solar Is The Future

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Lifespan

This Expert Power deep cycle battery promises 2500 – 7000 cycles over a ten-year lifespan.  This is very high when compared to lead-acid batteries that last for three years, however, the 4500 cycle range implies that proper care must be used in order to maximize lifespan.

Every purchase of this product comes with a one year warranty.  Normally this would be sufficient, but customers may not feel comfortable only having a warranty for 1/10 of the product’s expected life.

Performance

Weighing in at just under 30 lbs, this battery will not weigh down your van, boat, ATV or RV, nor will it cause any back pain if you are lugging it to your off-grid solar cabin. As with any lithium-ion battery, this product comes with a built-in battery management system to protect it from overheating, deep discharging or overcharging. 

Capabilities

Despite being listed as a 100Ah deep cycle battery, the actual input and output capability of this product is lower.  The battery notes a maximum solar input of 50Ah and a maximum electricity output of 70Ah. Those who own a large solar system must beware before hooking into this item for storage.

Pros 

  • Affordable
  • Lithium-Ion Power
  • Long Life Cycle

Cons

  • Short Warranty
  • Low Input/Output Capacity

Universal Power Group 12V 100Ah Review

Universal Power Group 12V 100AH Deep Cycle Battery
Next on our list is the Universal Power Group’s 12V 100Ah deep cycle VRLA battery.  This product is nearly identical to the Powermall, however falls short on a few key performance features.

Universal Power Group, or UPG for short, is a well known brand in the electricity storage industry. Among their products, their 12V 100Ah deep cycle battery is best for solar power storage.Solar Is The Future

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Features

UPG’s deep cycle battery is versatile, durable, and comes at a reasonable price.  The lead-acid battery is able to continuously deliver 100 watts of power until the battery is fully drained.  It is also completely maintenance-free and spill-proof. 

This product weighs about 63 lbs, which is average for lead-acid deep cycle batteries. 

They can also be stacked quite easily, as customers who bought one of the UPG’s batteries frequently return purchase more, adding to their solar power storage potential. 

Performance

Although it is backed by a one year warranty, many users of the UPG 12V 100Ah battery have found the performance of the product to be underwhelming. 

Countless reports of duds, lowered capacities, or short lifespans cannot be ignored.

Value

No matter the negative reviews, the value of this battery is hard to pass up.  With a price tag under $200, this normally high performing battery will compliment your solar power system with storage that doesn’t break the bank. 

Pros 

  • Good Value
  • Versatile
  • Durable

Cons 

  • Average Performance Record

Renogy 12V 100Ah Review

Renogy RNG-BATT-GEL12-100 Deep Cycle Pure Gel Battery 12V 100Ah
Renogy is best known for making mobile-capable solar panels so it only makes sense that they produce solar batteries to compliment the technology with storage.
Last on our list is a unique deep cycle battery from a well known brand in the solar space: the Renogy 12V 100Ah Pure Gel Battery. This product comes at a great value for smaller solar applications.Solar Is The Future

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Capabilities

The Renogy 12V 100Ah battery is built to withstand everyday use.  Unlike some of the batteries on this list that will degrade rapidly from daily use, this pure gel battery has protective measures against rapid depletion.  

Also included in the battery’s capability is an impressive 9-month shelf life.  Whereas most batteries will need to be recharged every 3 to 6 months, the Renogy outlasts its competition during periods of non-use.

Durability

Renogy’s deep cycle batteries are built with explosion-proof valve safety as well as triplex sealing on its terminals.  The design is inherently spill-proof, and safety was obviously a huge part of the construction process.  

Performance

Unfortunately, many accounts of poor performance have been noted against Renogy’s batteries. The 12V 100Ah is also priced nearly twice the amount of some of its competitors, so whereas high-quality performance is expected, it is not always delivered. 

Pros 

  • Durable
  • Great for Daily Use
  • Good Shelf Life

Cons 

  • Expensive
  • Average Performance History

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