UniEnergy Technologies Battery » Roomba Battery Replacement Cost (Ultimate Guide)

Roomba Battery Replacement Cost (Ultimate Guide)

Depending on which model you have, a Roomba average about two to three years of life cycle time before it needs to be replaced. Roomba batteries can drain quickly if you have carpets that are prone to static buildup or excessive dirt.

Luckily, replacing Roomba batteries is something that can be done rather easily and for very cheap in most cases. Read on for more information about replacement Roomba batteries and how much they cost.

Roomba Battery Costs

The cost of replacing the Roomba battery depends on the model you purchase. But you can expect to spend anywhere from $22 to $100 for a new Roomba battery, depending on the model you have.

The best way to save money when replacing a Roomba battery is by buying a refurbished unit. Refurbished units have been tested and checked over by previous owners and have been returned to the manufacturer to fulfill warranties and service agreements.

They are also cheaper than new models, which tend to be more expensive because they are larger and not made from pre-tested materials.

But iRobot recommends using original and brand-new batteries that come with the highest quality materials that ensure long life and optimum performance. These can cost from $80 upwards.

If you need to replace your Roomba’s battery, you should locate the robot user manual or warranty for your model online before purchasing a new one so you will know how long it takes for the battery to charge, how often it needs charges, and what type of replacement batteries can be used by your model.

Roomba Battery Type

Roomba Battery Type

When it comes to the battery type for your Roomba, no one is better than the other in terms of performance but there are two different types of batteries that power Roomba models. They include:

Most Roomba models are powered by Li-Ion batteries. This includes:

  • 900 series
  • E series
  • J series
  • I series
  • S series

NiMH (Nickel Metal Hydride) Batteries

Unlike lead-acid batteries, NiMH batteries have no sulfuric acid and can be more environmentally friendly. They are also rechargeable, so you won’t have to replace them as often. Plus, they’re lightweight and compact, so you can easily store them in your home.

They are relatively inexpensive and should last at least two to five years under normal use. They can be charged from any standard power outlet using the included charging cable or from a computer using an optional USB cable. They will not function as long if left unused for extended periods of time.

A disadvantage of NiMH batteries is their low self-discharge rate. They lose around 2% of their power when not in use so replacements are frequently needed.

Best Roomba Replacement Battery For NiMH Devices

If you have any of the following models, you’ll need to buy a NiMH battery replacement. You have two choices of batteries, each holds more power than the other. Specifically:

  • Moripilot 4050 mAh battery. These cost around $22.
  • Powerextra 3800 mAh battery. These cost around $24.

Li-Ion (Lithium-Ion) Batteries

Li-Ion (Lithium-Ion) Batteries

Like other vacuums, Roomba robots are capable of cleaning floors by using suction and brush technology to pick up dirt and debris. But these robots also include additional features, such as self-charging lithium-ion batteries so that they can be easily charged when needed.

These smart batteries allow Roomba robots to run for longer periods of time (up to five years) making them an ideal option for those with a busy schedule. They are also extremely affordable, making them a viable option for those on a budget.

Best Roomba Replacement Battery For Li-Ion Devices

If you have any of the following models, you will need a Li-Ion battery replacement. You have three choices of batteries, these include:

  • Tenergy5200 mAh Li-ion battery. These cost around $38.
  • Sparkole5300 mAh Li-ion battery. These cost around $40.
  • Melasta5200 mAh Li-ion battery. These cost around $38.

How Often Does A Roomba Battery Need To Be Replaced?

Roomba vacuum robots should be periodically serviced to ensure their peak performance. Roombas are powered by batteries, and their charge levels must be monitored and maintained. When these battery levels dip, the robot can no longer move freely.

The time between battery replacements depends on the Roomba model. For example, a Roomba 890 iRobot recommends servicing every two years for optimal performance.

Over time, the dirt capacity of the battery degrades, so you might need to replace the battery sooner than expected. The recommended replacement interval is based on the number of times the Roomba has been used and how much cleaning it’s been doing — generally around 400 cycles of use.

If your Roomba stops responding when you press its power button or the vacuum brushes stop rolling, it’s time to replace the battery. Replace both batteries in your Roomba with fresh ones and then let it charge for at least 24 hours before using it again.

Signs That Your Roomba Battery Needs To Be Replaced

There are several factors that determine the life of a Roomba battery. These include the amount of use it gets, charging time, storage conditions, and more. If you notice any of the following signs, it’s time for a new battery.

  • If the Roomba Battery is not recharging as fast as it should, or if it seems to be draining faster than normal
  • The charge indicator light on the Roomba flickers or stays lit even after the battery is fully charged
  • The Roomba will stop and refuse to begin again
  • Performance issues

If your Roomba is showing any of these signs, you can try and reset the Irobot battery just in case there is a problem with the machine’s internal structure. Press the Clean, Spot, and Home buttons at the same time, and let the Roomba charge for 72 hours.

How To Find A Replacement Roomba Battery

How To Find A Replacement Roomba Battery

Finding the best replacement Roomba battery for your vacuum cleaner isn’t as simple as it sounds. But it’s not difficult either. Basically, you have to make sure to choose a battery that’s compatible with your machine.

Most Roomba batteries are designed to work with specific models, so you’ll need to check the model number located beneath the Irobot above the right wheel before buying a replacement.

If you’re unsure which type of battery is right for your robot vacuum, consult your 12-month warranty or contact customer service for assistance.

Li-Ion Battery Vs NiMH Battery For Roomba

Li-ion batteries are the most popular type of rechargeable battery. Li-ion batteries have a higher energy density than NiMH batteries, meaning that they can store more energy in a smaller space.

If you’re thinking of replacing your Roomba battery, lithium-ion batteries are a good choice. They have a longer lifespan and charge faster. They also offer more power and run for longer than nickel-metal hydride (NiMH) batteries. However, they are more expensive than NiMH batteries, weigh more and they pose a greater risk of explosion or fire.

How To Change A Roomba Battery

Roomba battery replacement is an easy task that anyone can do, and will only take a few minutes of your time.

To replace the battery, first, make sure your Roomba is turned off. The charging dock has a small access door in the back that you can open with a screwdriver to unscrew the screws, and remove the battery.

To install a new one, simply slide it in place and snap it into the charger. The entire process should take no more than 5 minutes.

To avoid mistakes and prolong the life of your Roomba, keep track of each time you charge and discharge it. Be sure to fully charge your Roomba first and then let it run for several hours before discharging it completely.

Can I Use My Roomba If The Battery Is Low?

It’s possible to still use your Roomba even if the battery is low. If the battery is low but still working, you can continue to use it until the battery completely dies.

If the battery gets very low, the Roomba will stop working altogether and you’ll need to replace it.

It’s essential to charge your Roomba regularly so that it has enough juice to complete its cleaning cycle. Most Roomba batteries have indicator lights that tell you when to recharge your unit and when it is fully charged.

A full charge means that your Roomba has enough power to clean for approximately 60 minutes.


When it comes to finding a replacement Roomba battery for your device, there are a lot of options out there for you to choose from. You can even buy a new battery and keep it in your home as a backup, in case your original one ever fails.

The main thing to consider is the cost. Most batteries will range between $22 to $100 depending on power outage, model, and battery type.

Consider this thought. While buying a refurbished battery will save you money for the short term, it might react badly with your machine, costing more money in the long run.

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