10 Best Deep Cycle Batteries Review 2019

Deep cycle batteries have a lot of applications. The best deep cycle battery can power everything from solar grids to yachts. Take good care of them, and they can last for years. Buy the wrong type for your needs, though, and you can throw a lot of money down the drain.

We’ve picked out our top 10 best deep cycle batteries and reviewed them below. This list includes both marine and RV batteries. There is even a 6-volt option included in the mix. These can be a great option for solar panels as well as golf carts.

Top 3 Best Deep Cycle Batteries  Comparison Chart

Optima BlueTop
Optima BlueTop 8016-103 D34M Battery
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Universal UB121000
Universal UB121000 AGM Battery
Renogy Battery
Renogy 12V AGM Battery



AGMYesYesYes
Capacity55ah100ah100ah
Customer Rating4.1 out of 5 stars (4.1 / 5)4.3 out of 5 stars (4.3 / 5)4.2 out of 5 stars (4.2 / 5)
PriceOptima BlueTop 8016-103 D34M Battery priceUniversal UB121000 AGM Battery priceRenogy 12V AGM Battery price
Reserve Capacity120 mins225 mins225 mins
Voltage12v12v12v

Trying to decide which battery is right for you? Then you’re in luck! Read on to find out which battery is the most powerful and which is the most durable. Most importantly, you’ll learn how to find the one that fits your needs.

10 Best Deep Cycle Batteries Review:

1
Optima BlueTop 8016-103 D34M Marine/RV Deep Cycle battery

Optima 8016-103 D34M BlueTop
Optima BlueTop 8016-103 D34M Marine/RV Deep Cycle battery
4.1 out of 5 stars (4.1 / 5)
Optima 8016-103 D34M BlueTop is one of the best deep cycle Marine and RV batteries for starting on the market .

The Optima BlueTop series brings you an array of battery options rated for marine use. They use a sealed AGM design that makes them spillproof and safe to mount in any position. The efficient design and high capacity mean it’ll hold a charge longer, too, giving you more time on the water.

Optima BlueTop deep cycle batteries also have the advantage of relatively high CCA ratings. You can use the same battery to start the boat that you use to run it. This saves you the hassle of maintaining two batteries, making them worth the extra expense.

What’s the best feature?

The use of SpiralCell technology is the defining trademark of the Optima battery. Rather than using flat plates like a typical AGM deep cycle battery, Optima spiral winds them. This improves their function in extreme conditions and is the reason they can last a lot longer than other models.

The Optima D34M BlueTop is one of the best AGM deep cycle batteries for starting
The Optima D34M BlueTop series brings you an array of battery options rated for marine use. They use a sealed AGM design that makes them spillproof and safe to mount in any position
———

Pros

  • Great for starting as well as deep cycling
  • Starts reliably even in cold weather (750 CCA)
  • Versatile enough to use for marine or RV applications
  • Long runtime and high reserve capacity
  • Withstands more recharges than traditional batteries
  • Spillproof AGM design

Cons

  • Not the best value for the power
  • Packaging for shipping doesn’t always protect from damage

Who is it for?

This is the ideal motor for anyone who has a lot of electronics or “creature comforts” on their vehicle. It’s also ideal for boats with trolling motors. Since it functions well in both hot and cold conditions, it’s great for travelers, too.

2
Universal UB121000-45978 12v 100AH Deep Cycle AGM Battery (Black)

Universal UB121000
Universal UB121000-45978 12v 100AH Deep Cycle AGM Battery
4.3 out of 5 stars (4.3 / 5)
This is a best option for RV campers who are looking for a high capacity and long lifespan but not too expensive .

Universal batteries might sound generic, but the truth is these no-frills batteries are powerhouses. It uses the same high-quality AGM technology as models that cost twice the price. And while the casing might not look as pretty, it’s plenty durable, even in harsh weather.

Price-wise, this is a mid-level option—not the cheapest, but not too expensive. It’s a great option if you need a lot of power but don’t have a lot to spend. It’s not suitable for marine applications or starting, but it’s a fantastic deep cycle RV battery.

What’s the best feature?

The capacity to price ratio on this model is impressive. Basically, you’ll get the most power dollar for dollar here compared to other options. With a lifespan of 3-5 years, it’s a reliable battery, as well. You can keep it in storage up to a year without worry.

Universal UB 121000 is one of the best AGM deep cycle batteries
Universal UB 121000 is a mid-level option that features 100ah of capacity and impressive lifespan
———

Pros

  • Suitable for all dry land applications
  • Easily compatible with standard engines and terminals
  • Holds its charge very well in storage
  • Large power capacity
  • Relatively quick recharge rate

Cons

  • Maximum lifespan isn’t as long as other options
  • Not as versatile as other options on the list
  • Loses maximum charge quickly if discharged too deeply

Who is it for?

RV campers of all stripes will love this battery. Whether you take a couple of small trips a year or regularly dry camp, you’ll get great use from this model. Since it holds its charge well in storage it’s also a great option as a back-up or seasonal battery.

3
Renogy Deep Cycle AGM Battery 12 Volt 100Ah

Renogy Deep Cycle Battery
Renogy Deep Cycle AGM Battery 12 Volt 100Ah
4.3 out of 5 stars (4.3 / 5)
This is one of the highest capacities of any deep cycle marine battery on the market .It is the perfect battery for RVs with lots of electronic extras

Renogy’s main focus is on solar systems and off-grid living. Their batteries are built with this in mind. This isn’t to say they’re limited to those applications—far from it. It’s more an indication of the high power they can provide.

This battery alone is plenty for even the most souped-up vehicles. Wire a few together in sequence, and you can use them to power an entire solar grid. Pretty much any high-power application will be well-served by this Renogy battery.

What’s the best feature?

Versatility is the Renogy AGM12-100’s main strength. It’s great for people with multiple vehicles. It has one of the highest capacities of any deep cycle marine battery on the market. That’s especially impressive considering it’s also one of the best deep cycle RV batteries you’ll find.

Who is it for?

This is the perfect battery for RVs with lots of electronic extras. It’s especially good if you do a lot of dry camping. The long lifespan and high power capacity mean you can count on it no matter where your travels take you.

Pros

  • Enough power for RVs and all their extras
  • Easy to wire in sequence for even more power
  • Can be used for RV, boat, or solar grid applications
  • Lasts through over 600 discharge cycles
  • Works well with both daily and occasional use

Cons

  • Doesn’t deal as well with deep discharges
  • Recharging takes a bit longer than other options

4
Optima BlueTop 8052-161 D31M Marine/RV Deep Cycle Battery

Optima BlueTop 8052-161 D31M
Optima BlueTop 8052-161 D31M Marine/RV Deep Cycle Battery
3.9 out of 5 stars (3.9 / 5)
This is also the best choice for who love Optima brand.It gives you more power for both deep cycle and starting applications.

Here’s another option from the BlueTop line that’s a great choice if you’re looking for a deep cycle battery. Like the Optima D34M above, it uses SpiralCell technology for a more durable, efficient battery. It gives you even more power than the D34M, though, making it even more versatile.

What’s the best feature?

Along with the benefits of the SpiralCell technology mentioned above, this has the overall benefit of higher amps. It gives you more power for both deep cycle and starting applications. No matter how many accessories your boat has, you’ll be able to stay on the water for longer.

Who is it for?

This is a battery designed to power lots of accessories. You’ll want something this powerful if you have a lot of different extra bells and whistles on your vehicle. The high reserve capacity also makes it great for seasonal use, since it can hold its charge for months in storage.

Pros

  • Resistant to power loss from cold, heat, and vibration
  • Works equally well in boats and RVs
  • Long reserve capacity lets it go hours between charges
  • Superior CCA rating to any other marine-rated deep cycle battery
  • Holds charge well in storage
  • Lasts through 5X the charges of traditional AGM batteries

Cons

  • Higher price point
  • On the heavier side
  • Can’t be returned once shipped

5
VMAXTANKS VMAX V35-857 12V Marine Deep Cycle Battery

VMAX V35-857
VMAXTANKS VMAX V35-857 12V Marine Deep Cycle Battery
4.2 out of 5 stars (4.2 / 5)
If you’re looking for a more budget-friendly option in marine-rated deep cycle battery, the VMAX V35-857 is our top choice.

If you’re looking for a more budget-friendly option in marine-rated deep cycle batters, the VMAX V35-857 is our top choice. Since it’s still an AGM-style battery, it’s just as safe as more expensive designs. Considering the power, it’s the best deep cycle battery you’ll find for the price.

What’s the best feature?

Budget-minded shoppers will love the VMAX V35. This isn’t just because of the low cost but because it’s an exceptional value. It’s also a relatively lightweight battery, at only 25 pounds. This makes it easy to transport, and a great choice as a back-up power option.

Who is it for?

This is a great choice for Minn Kota motors and similar trolling motors. There’s no reason to pay for more power than you’ll use. Something like the Optima batteries above would be overkill in a smaller fishing boat, but this VMAX is just right.

Pros

  • Powers 18-40lb trolling motors for 4-8 hours
  • Great value for a deep cycle battery
  • Recharges quickly
  • Lightweight and portable
  • Resists shock and vibration damage

Cons

  • Not suitable for starting
  • Doesn’t last as long as other batteries

6
VMAXTANKS 6 Volt 225Ah AGM Battery

VMAXTANKS 6 Volt
VMAXTANKS 6 Volt 225Ah AGM Battery
4.5 out of 5 stars (4.5 / 5)
VMaxtank 6volt are designed for high-powered applications.They use in solar panel systems and run longer than any 12-volt battery you can find, for any price.

For a high-performance option from VMAX, this 6-volt deep cell battery is one you’ll want to check out. These batteries are designed for use in solar panel systems. Golf carts and many recreational vehicles can also run great on these powerful batteries.

What’s the best feature?

A 6-volt battery is a great choice for high-powered applications. You can use them singly or link them in serial. Each VMAX MB6-225 has a reserve capacity of over 8 hours. Two together, and they’ll run longer than any 12-volt battery you can find, for any price.

Who is it for?

This is the first model on the list designed more for dry land than marine applications. They’ll definitely power a golf cart beautifully. Their real power shows when they’re linked in serial, though. Used this way, they’re perfect for dry camping and solar grid applications.

Pros

  • Long lifespan of up to 10 years
  • Highest reserve capacity on the list
  • Stands up well to extreme cold and heat
  • Highly porous AGM plates make it more reliable
  • Doesn’t use silica gels or other contaminants

Cons

  • Will need to use 2 in series for 12-volt motors
  • Loses capacity if discharged below 50%


7
Mighty Max Battery 12V 100AH Deep Cycle Battery

Mighty Max ML 100-12
Mighty Max Battery 12V 100AH Deep Cycle Battery
4.5 out of 5 stars (4.5 / 5)
This is another choice for RVs and campers with similar price but more power.

The Mighty Max 12V deep cycle battery is another great mid-price choice for RVs and campers. It offers a similar capacity to the Universal battery above, and at a very similar price. The main advantage of the Mighty Max is that it’s able to recover from deep discharges more quickly.

What’s the best feature?

The calcium-alloy grid utilized in the Mighty Max ML100-12 is what makes it so powerful. It’s more durable than the plates used in other batteries. This also means it’s less prone to damage from corrosion, vibration, and other environmental forces.

Who is it for?

Outdoorsmen can make excellent use of the Mighty Max. Any vehicle that uses a 12v deep cycle battery will run for hours on a charge. It’s not prone to overheating even after long use. If you want a worry-free way to power your boat or RV, the Mighty Max is for you.

Pros

  • Good recovery from deep discharges
  • Calcium-alloy grid gives it better durability
  • Works well in both heat and cold
  • Slow discharge of energy in storage
  • Equally viable for float and cycle uses

Cons

  • Doesn’t include any mounting accessories
  • Terminal bolts are a bit on the short side


8
WindyNation 100AH 12V RV/UPS/Marine Deep Cycle Battery

WindyNation Sealed lead acid Battery
WindyNation 100AH 12V RV/UPS/Marine Deep Cycle Battery
4.4 out of 5 stars (4.4 / 5)
If you are looking for a deep and repetitive discharge, this one is good for you.It’s ideal for marine, RVs, UPS, solar systems,etc.

There are all kinds of reasons you might need a battery, and this WindyNation battery has them all covered. It’s not just for RVs and boats, though it can power those beautifully. It’s also great for UPS and solar power, and any time you need a consistent charge.

What’s the best feature?

The quality of the components used in this WindyNation battery is what sets it apart. Many cheap batteries use recycled lead, but these models use only virgin lead. That means consistent power and performance across units and a battery you can rely on.

Who is it for?

This is a great low-maintenance option. Since it lasts longer between charges, you won’t have to think as much about whether it still has power. Reliability is especially key for dry campers and people living off the grid. That’s the main reason this battery is such a great choice for anyone.

Pros

  • Long life between charges
  • High storage capacity with a low discharge rate
  • Can last ten years or more in float application
  • Fast recharge rate
  • Versatile enough to use for any application

Cons

  • Won’t function as a starting battery
  • On the pricier side



9
VMAX MR96-60 AGM 12V 60AH AGM Battery Deep Cycle High Performance Battery

VMAX MR96-60 Battery
VMAX MR96-60 AGM 12V 60AH AGM Battery Deep Cycle High Performance Battery
4.6 out of 5 stars (4.6 / 5)
This isn’t the most powerful option on the list, but it will give you plenty for most “house” RV applications. It’s versatile enough to use for marine applications, too.

Here’s a unit that RV drivers on long road trips will love. It will give you a reliable, worry-free performance with a low discharge rate. Not only does it last longer than many options, but it also recharges more quickly, getting you back on the road sooner.

This isn’t the most powerful option on the list, but it will give you plenty for most “house” RV applications. It’s versatile enough to use for marine applications, too. The electrolyte suspension in VMAX batteries is top-tier, and the MR96-60 is a prime example.

What’s the best feature?

This battery has the best weight to power ratio of any option on this list. It’s not the lightest battery you’ll find, certainly. At only 45 pounds for a 60Ah battery, though, it’s an impressively portable design. The included carrying handle just makes it even better.

Who is it for?

Anyone with an RV, boat, or other recreational vehicles will love this battery. Since it’s so portable, it’s easy to take with you as a back-up power source. It’s ideal for trolling motors from 24-50lbs of thrust and a definite upgrade over most batteries of the size.

Pros

  • Military-grade plates mean top-level performance
  • Carrying handle makes it easy to transport
  • High-porosity AGM operation with no contaminants
  • Relatively lightweight and portable
  • Long lifespan
  • Good recovery rate from deep discharges

Cons

  • Not powerful enough for all RV applications
  • Won’t work as well for solar or UPS use


10
Optima 8037-127 D27F YellowTop Starting and Deep Cycle Battery

Optima 8037-127 D27F
Optima 8037-127 D27F YellowTop Starting and Deep Cycle Battery
4.2 out of 5 stars (4.2 / 5)
The combination of high cranking amps and a high reserve capacity is what makes the Optima 8037’s the most expensive battery on this list.If you need something to both start and run your RV, it’s perfect.

You’ve seen some of Optima’s BlueTop series earlier on the list. For high-power applications, you’ll want to be familiar with their YellowTop line, too. They have the same resistance to damage and vibration, too, so you know it’ll last for the long haul.

Optima batteries aren’t cheap—in fact, this is the most expensive battery on this list. If you need something to both start and run your RV, though, it’ll do the job in one convenient package.

What’s the best feature?

The combination of high cranking amps and high reserve capacity is what makes the Optima 8037’s special. It serves the place of two other batteries and does it beautifully. Of course, it also features Optima’s patented SpiralCell technology for reliable, long-term operation.

Who is it for?

This might be the best deep cycle RV battery on the market. This is especially true for people who need to power a lot of electronics. It’s also perfect for other equipment like inverters or winches. Any vehicle that needs a 12-volt battery will benefit from Optima’s high performance.

Pros

  • Works as a starting and a deep cycle battery
  • Lasts through over 300 discharge cycles
  • SpiralCell technology improves performance
  • High cranking power
  • Low discharge rate with a high reserve capacity

Cons

  • Most expensive option on the list
  • Not intended for marine applications


Best Deep Cycle Batteries: The Bottom Line

There are a lot of great options out there for deep cycle batteries. Choosing the right one depends on how you plan to use it and what kind of system you’re powering. Since AGM batteries tend to cost more than other types, your budget will also be a factor.

For overall performance, our top choice is the Optima BlueTop 8052-161. It’s the most versatile option on the list. You can use it for both boats and RVs, and it has the cranking amps for starting. The initial cost is high, but it will last for years if you take care of it.

Whether you’re powering a solar grid or RV appliances, one of the batteries on this list will meet your needs. We hope we’ve helped you on your search for the best deep cycle battery!

FAQs

Is an AGM battery a deep cycle battery?

These batteries are all deep cycle batteries, and they all use AGM technology. You can think of AGM batteries as a type of deep cycle battery. There are other designs out there that will serve the same function but use a different method to do so.

AGM batteries are the preferred type of deep cycle battery for many because they’re low maintenance. Other batteries require you to add water and must be kept upright to avoid spilling. These aren’t concerns with an AGM battery, making them the easy best choice for most people.

How many years does a deep cycle battery last?

That depends on the battery and its type. Most AGM batteries last between 4 and 7 years. Different materials and construction methods can extend this, but few will last longer than 10 years.

How you use your battery will also affect its lifespan. Deep discharges put more strain on the battery than light use. You’ll get the longest lifespan from your battery if you never discharge it below 80%. If you regularly discharge it below 50%, expect the lifespan to drop to 2 years or less.

Is it OK to use a deep cycle battery in my car?

Generally speaking, it’s not a good idea. Most deep cycle batteries will draw too much-sustained voltage when recharging. This can damage your car’s alternator in the long-term. While there are exceptions, you should typically only use car batteries in your car.

Can a deep cycle battery be overcharged?

Yes, you can overcharge a deep cycle battery. Overcharging lowers the overall capacity and lifespan of the battery, so you want to avoid it to get the most out of your purchase.

The best way to avoid overcharging your battery is to get the right charger. Most AGM batteries can be charged to a level of 2.4 volts per cell. If you’re using a float charger, lower that to 2.25 volts per cell. If it’s hot out, lower the charging voltage a bit. Warm batteries take power more quickly.

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