Best Aquarium Backup Batteries

Though tank crashes aren’t an overly common experience, it’s a reality that we have to live with that power outages do always seem to happen when you’re least prepared.

A tank crash could force you to restart your entire collection of fish, which is not only devastating to pet owners but costly. So to prepare for the worst, it’s in your best interest to get the best backup aquarium battery or generator your wallet will afford you. And to have a little more peace of mind, it’s better to do this sooner, rather than later. A great way to keep worry-free is to keep both backup batteries and a backup generator in case of extended power outages.

When it comes to backup batteries, you have a few options to choose from, but it can be intimidating to know which is best for your setup. There is the Uninterrupted Power Supply (UPS) system that is a common choice because it’s widely available in-store and online. But there is also the option to use generators because of their long-lasting life, though they do seem to be less popular than the UPS systems.

Recommended Aquarium Battery Backups

Whether you already have the equipment that will work with backup batteries, you need an entirely new setup that will work without any manual work, or you need a backup generator that will work for weeks at a time, be sure to check out my suggestions below.

These are some of the best options around and are easily purchased.

1. CyberPower Intelligent LCD UPS SystemOpens in a new tab.

  • This UPS is designed to work with desktop computers and is very effective with essential aquarium electronics.
  • There are more than enough models with different power outputs to fit your needs, including 850VA, 1000VA, 1350VA, and 1500VA. If your tank has a lot of essentials, get the larger model.
  • Also acts as a surge protector, so protection is uninterruptible.
  • Smarthome capabilities, so you can change setting with your smartphone.
  • It comes with a 5-year warranty

This product costs around $250. To check it out, click hereOpens in a new tab..

2. APC 850VA UPS Battery BackupOpens in a new tab.

  • The best model includes an 850VA / 600W Backup Battery power supply.
  • Also includes 9 Outlets, 6 UPS Battery Backup, and 3 USB Charger Ports
  • APC is a fantastic brand in the world of aquariums.
  • Alarms will let you automatically know if the backup power is used and how much will need to be recharged in the future.

The biggest version of this product costs around $170. To check it out, click here.Opens in a new tab.

3. IceCap Battery Backup v2.0 for Aquarium Pumps

  • Compatible with 24V DC pumps that are standard for most fish tanks.
  • Keeps a flow pump running for up to 35 hours after power loss.
  • Connect up to two battery backups to extend that life to 70 hours.
  • Compatible with 12-24 volt pumps from different brands like Maxspect, IceCap, and Reef Octopus.

The product, on average, costs around $130. To check it out, click here.

4. Wayne WSS30VN Upgraded Combination Battery Back-Up System

  • Completely pre-assembled, so all you have to do is drop it in.
  • An audible alarm sounds when your backup system is activated.
  • Easy to read LED display showing you if it’s ready to be activated or not.
  • Corrosion-resistant Thermoplastic impeller to keep your water flow at maximum speed for the health of your fish.

This amazing product usually goes for around $415. To check it out, click here.

5. YAMAHA EF2000iSv2 Gas Powered Portable Inverter

  • Quiet when working and lightweight, this smaller generator only weighs around 45 pounds.
  • Easy to store in smaller places if you’re lucky enough to end up never needing it.
  • Runs on gas and can go up to 10.5 hours without needing a refill.

The product is an investment and can go for around $1,135. To check it out, click here.Opens in a new tab.

6. 200W Peak Power Station, Flashfish Backup Battery Pack

  • Perfect for charging smaller electrical needs, such as your fish tank.
  • Very portable, and weighs only about 4.5 lbs.
  • Affordable for people people who need a backup generator, but don’t want to break the bank.

This is a cost-effective product, going for around $150. To check it out, click hereOpens in a new tab..

7. Penn Plax PEN-019 Air Pod Aquarium Air Pump For Power

  • Runs on 4D batteries when it senses electrical interruption in the tank. Switches automatically.
  • The pump is ultra-quiet when it turns on and runs.
  • Can be used for tanks up to 55 gallons and can provide power for up to 150 hours, or a little more than 6 days.
  • Larger tanks will require more than one unit, so you can use these on tanks of all sizes.
  • Safe for both freshwater and marine environments.

This all-inclusive, amazing product usually only costs around $55. To check it out, click here.Opens in a new tab.

If you love your at-home aquarium, it is absolutely necessary for you to have some sort of backup plan just in case there is an outage. It doesn’t happen to everyone, but if it happens to you, you shouldn’t have to scramble. Being prepared is of the utmost priority.

To learn more about the effects of power outages on fish tanks and what to do when you don’t have a lot of time and no backup power, click on the video below:

Why Get a Battery Backup for Your Aquarium?

We’ve told you that you need a backup as well as given you some suggestions of backups to buy. But… why?

Though your situation might be different than other people’s in terms of tank size or fish type or whatnot, we’re all the same when it comes to our need for a clean and safe environment for our pets.

One of the most important reasons to buy backup power supplies for when the power goes out is the simple fact that aquarium fish have lives and they depend on that power. It’s that simple really.

Keeping them alive should be important to you.

No one wants to come home to realize that their pets who are loved, irreplaceable, and dependant on you, have passed away. It’s always a bad day to realize that your fish are gone forever and to get new ones will most likely cost a fortune. So to keep that from happening, you need to be able to keep your major aquarium functions working properly.

So what’s the thing that a majority of filters, powerheads, air suppliers, and heaters all have in common?

They all need power, whether that’s from electricity or from an aquarium-safe battery. These technologies make keeping your fish alive and well extremely easy, so having a backup battery for them is crucial. Meanwhile, backup batteries are known to last from around three to five years! Meaning you won’t have to worry about the backup safety of your tank for a very, very long time.

If you live in an area where there are frequent power outages, it’s important that you have extra power in case of emergencies.

No one, no matter where they are from, can know exactly how long power outages can last, which can leave aquarists in the dark in terms of how clean their tank is and what the temperature is. So that’s also why it’s probably in your best interest to have a backup generator, too that can be dedicated to your tanks.

This is especially important when these events happen while you are sleeping, if you are away for a week on vacation, or even if you don’t check your tank for days at a time. Having a backup battery is just good sense when it comes to having peace of mind when you can’t constantly be near your fish. It’s also good to think about your investment in your fish.

Spending a little money now could save you thousands of dollars in the future if anything were to happen.

What Will Happen to My Fish Without Power?

Fish can really only last in an aquarium without power for anywhere from three to twelve hours, so it is important to be prepared before that happens is crucial. If an outage lasts for too long, these are the major things that can go wrong:

Oxygen Depletion: Since your fish still need to consume oxygen in the aquarium, it’s most likely that they will start to consume unfiltered oxygen. Once that’s used up, your fish will most likely suffocate. And as the temperature rises, the oxygen will begin to deplete even more.

Water Temperature Variation: Most fish or aquatic species need water temperatures of 72 to 82 degrees Fahrenheit to remain healthy. Anything above that or below that can cause them to stress out and become much more susceptible to disease. Just like a human can’t stand temperatures that are too high or too low, neither can fish.

Ammonia Buildup: Without a working filtration system, it’s most likely that the ammonia in your aquarium will reach levels that are toxic to your fish.

To combat these naturally to ensure that your fish can live as long as possible in case something happen to your backup method of power, be sure to create as natural as possible an environment in their tank.

This means including plants that naturally use Carbon Dioxide and release Oxygen. This is why a lot of fish that exist in larger tanks with natural plant life rarely all die at the same time.

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Rick Kesler

I'm Rick and I've kept freshwater fish for over 5 years now. My main tank now is a 55-gallon tropical freshwater tank and my wife and I both just love watching all of our different fish while they swim around, some schooling and others not. I've also learned a lot about what to do and what not to do to keep our fish healthy and happy.

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