So, you have got hold of a Roomba vacuum cleaner and are looking forward to make your daily house-keeping tasks easier?
A wise investment indeed! But after a few years of usage, you will find the original battery to become dysfunctional. But worry not! Here come the Roomba replacement batteries to your rescue! Where to find and how to use them, you ask? Well, we are here to make your task simpler. We will introduce you to the top seven Roomba replacement batteries and will also guide you with the process of replacement and share some Roomba battery hacks with you, to make your experience better. We have done an extensive research to handpick the best ones to serve your purpose and have listed their pros and cons to help you make the right selection of iRobot Roomba battery. So, let’s get started.
Table of Contents
- 1 Best Roomba Replacement Batteries Comparison Table 
- 2 Top 7 Roomba Replacement Batteries
- 2.1 1. Powerextra 3.8Ah Ni-MH Battery
- 2.2 2. Tenergy 3500 mAh Replacement Battery
- 2.3 3. Morpilot 3800mAh Ni-MH Battery for iRobot Roomba
- 2.4 4. Tenergy 5200 mAh Replacement Battery for iRobot Roomba
- 2.5 5. Powerextra 3000 mAh Roomba Replacement Battery
- 2.6 6. Lithium Roomba Replacement Battery
- 2.7 7. Mr.Batt Replacement Battery
- 3 Best Roomba Replacement Batteries Buyer’s Guide
- 4 Final Thoughts
Best Roomba Replacement Batteries Comparison Table 
Top 7 Roomba Replacement Batteries
1. Powerextra 3.8Ah Ni-MH Battery
This one comes from the house of Powerextra, a brand that is well-known for producing high-quality products that are CE-certified and suit the desired criteria of OEM products.
It is easy to be connected with almost all Roomba models and is designed to give them the maximum life-span. The package includes four side-brushes to suit the different models along with four screws.
Overall, it is undoubtedly one of the best Roomba replacement batteries to go for.
2. Tenergy 3500 mAh Replacement Battery
This cost-efficient battery from Tenergy helps you to clean using your Roomba for a larger period of time at a considerably low cost.
Overall, this battery is a good way to help your Roomba regain its original form!
3. Morpilot 3800mAh Ni-MH Battery for iRobot Roomba
This 3800 mAh battery perfectly matches with the in-built ones found in most Roomba models. It is convenient to use and can be easily carried wherever you are going.
With a considerably good charging capacity and ability to retain the same through years, it is definitely one of the best batteries to choose.
4. Tenergy 5200 mAh Replacement Battery for iRobot Roomba
With a super-high capacity of 5200 mAh, this battery can prove to be even better than the original one it comes with. In a crowd of NiMH and NiCd batteries, this one is unique and requires lesser maintenance.
In short, the Tenergy 5200 mAh batteries can save you from the pain of replacing your Roomba batteries frequently.
5. Powerextra 3000 mAh Roomba Replacement Battery
These series replacement batteries have a capacity of 3000 mAh and voltage of 14.4 volt. These are certified as OEM products and are capable of meeting your expectations easily. They are also CE certified and tested by the manufacturers to be perfect for the cause.
Owing to the performance of this battery, people who have bought it have found it to be even better than the original Roomba batteries!
6. Lithium Roomba Replacement Battery
This battery has an exceptionally high capacity of 4400 mAh. The medical grade product is certified by CE and UL 2054.
7. Mr.Batt Replacement Battery
It is basically a substitute of the iRobot Xlife Extended Life battery, offering the same features at a much lower price. While the 4500 mAh battery from the brand is a popular choice among Roomba owners, this one being a small but powerful package is also very popular.
It can be a great item to opt for at a reduced budget, while providing Roomba a good amount of running time.
Best Roomba Replacement Batteries Buyer’s Guide
Types of Roomba Replacement Batteries
There can be different types of replacement batteries for Roomba:
1. Lithium Batteries
They use lithium as anode and are also known as Lithium metal batteries.
They are characterized by high charge density and high cost per unit. The voltage may vary in the range of 1.5 Volt – 3.7 Volt.
2. Lithium ion Batteries
In these batteries the ions move from the negative electrode to the positive one while discharging and in the opposite direction while charging. These are featured with high charge density and low maintenance which is why they are used in some Roomba models.
3. NiMH Batteries
NiMH batteries or Nickel Metal Hydride batteries are the ones where the reaction at the positive electrode is same as that of a Nickel-Cadmium cell.
One major problem with these batteries is the Memory Effect due to which they tend to hold lesser charge than expected. This problem is not present in Lithium batteries and hence they are preferred by many over the NiMH ones.
How to Replace Roomba Battery?
So far, we have discussed about the various options that you have for replacing the Roomba batteries. You can choose the replacement battery for iRobot Roomba that seems to be the best for you and after you’ve got hold of it, the next question that will come to your mind is how to replace Roomba battery. Well, Roomba battery replacement is no rocket science. Just follow the steps explained below:
1. Removing the Side-brushes
To replace the batteries, the first step you need to perform is to remove the side-brushes. So first remove the screws of the brushes and then the brushes.
2. Removing the Bottom Cover
The next step is to remove the four screws at the bottom and finally the bottom cover.
3. Removing the Battery
Finally, it is time to remove the battery. Though the procedure is same for most of the models, you can refer to the instructions given by the manufacturers to be aware of the exact process involved in yours.
4. Installing the Battery
Once you have removed the battery, it is time to install the same. This can be as simple as dropping the battery to the given space, though it might require a few additional steps in some cases, depending on the model under consideration.
5. Put it to Charge
Once you have installed the battery, with the iRobot logo facing up, put it to charge for the entire night. The concept is similar to buying a new phone or laptop and charging it overnight before beginning to use it.
And you are done! Your Roomba battery is now replaced and Roomba is ready to use!
How to Maximize the Battery Life of Roomba
Who doesn’t want their electronic goods to work for a longer period of time without replacing the battery? For obvious reasons, you would want your Roomba battery to have a long life. It would be quite economical as you will not need to replace the battery frequently. Also, increasing the Roomba battery life will help in keeping the bot operational for the duration claimed by the seller. There are a few tips which you need to know in order to ensure the same:
1. Cleaning the Brushes
The basic step would be to clean the brushes regularly. It is quite obvious that your Roomba, while clearing the litter and hair of your pet, will gather a lot of dust and dirt in its brushes. If not cleaned from time to time, the machine will find it difficult to carry on with its cleaning activities with those brushes. It will work harder in order to make the brushes spin, eventually affecting the Roomba battery life.
It is thus advisable to clean the brushes at least once a week.
2. Charge it Often
This applies mainly to the Nickel-based batteries. The unit should be kept at the charging station while not in use. However, care should be taken to ensure that the charging is not done for a few days at a stretch.
3. Drain the Battery
It is advisable to run the battery and exhaust it frequently in order to keep it in a healthy condition. It’s just like avoiding rusting of locks by using them regularly.
4. Store it Properly
Just like the other electronic gadgets you own, your Roomba needs to be kept in a cool place as heat can cause severe damage to it. Avoid direct sunlight and ensure that it gets enough room for breathing. For this, keep it away from other appliances producing heat.
5. Roomba Deserves Holiday
When you are on a vacation, Roomba also deserves the same. So, before going out, place it on “Vacation Mode“. For this, first charge the battery completely. Then, flip it over and remove the battery by removing the screws that lock the battery door. Now place the battery in a cool place as discussed earlier.
On returning, charge it to the full and drain the same. Thereafter, you can continue with your regular routine with the bot.
Following the above-mentioned tips, you can ensure a longer life of your iRobot Roomba battery and avoid the usual Roomba battery problems.
How to Reset a Roomba Battery?
A Roomba battery reset is suggested when you find the bot to become less effective in its work which is a sign that the battery has become exhausted.
Resetting of the battery is basically the regeneration of the same. It helps in increasing the life span of your battery. Let us find out how this can be done.
1. Removing from Charge
First of all, remove the Roomba from its charge base. iRobot Roomba battery reset should never be performed while on charge-station.
2. Pressing ‘Clean’ Button
The next step would be to switch it on and press the ‘Clean’ button.
3. Pressing the ‘Spot’ and ‘Dock’ Buttons
Now, press and hold the ‘Spot’ and ‘Dock’ buttons. You will find these buttons above and below the ‘Clean’ button, respectively. The pressing and holding needs to be done for about ten seconds.
On releasing the buttons, you will find the Roomba to make noise and start.
4. Place it back to Charging Station
Finally, place it back to the charging station till the green light around the ‘Clean‘ button is lit.
And that’s all! You have successfully reset it. Now what needs to be done is to reset its time and date and schedule the cleaning.
How to Charge Roomba Battery for the First Time?
If you are using it for the first time, you may not know how to charge the battery.
Roomba’s battery should be charged fully before it gets into operation. What you need to do is, connect the line cord to the Home Base and dock your bot. The duration for charging Roomba should be at least two hours and when done for the first time, it should be an overnight process.
Let us get familiar with the different colors in which the battery symbol may blink to indicate the charging status:
Amber color indicates that it is charging. Solid green color of the symbol means the bot is fully charged whereas a solid red color means battery is empty and needs to be recharged soon.
Also, Flashing Red indicates that the battery is too low to begin the cleaning operation and needs to be charged immediately.
You also need to be aware of the concept of Refresh Charge. If the machine is left away from its charging station for long and the charge has considerably drained, it will begin charging on its own!
The time period of Refresh Charge is usually 16 hours. During this time, do not disturb it and let it charge on its own.
What to do if your Roomba is not Holding Charge?
Even after charging your smart vacuum cleaner for the appropriate duration, you may sometimes find that it is not holding the charge to perform its tasks. Why does this happen? What is the way out?
Well, under such a situation you need to perform a sixteen-hour battery reset. This may help in improving the runtime.
It can also be possible due to a displacement of the battery. It may happen that the battery has been shifted a bit away from where it should have ideally been and hence the problem. So, in such a case, it is advisable to plug it off, remove the battery, place it in the proper position and then start charging.
Another possibility can be faulty parts which is a common issue and it is advisable to contact the manufacturer to solve the same as they will get that part replaced for free if it is under warranty.
So, by now, you must be clear on the basics of using Roomba replacement batteries and have got an idea of the best options to choose from.
If you ask us, our choice would be the Lithium Roomba replacement battery. With a capacity of 4400 mAh, medical grade quality and a pretty long battery life, it offers a perfect balance and can be the best one to opt for. Also, if someone is looking for a NiMH battery, the Tenergy 3500 mAh battery can be the ideal choice for them.
Again, for those who are looking for a budget buy, we would recommend the 3000 mAh battery from Powerextra which, at reasonable price, is capable of keeping the bot operational throughout its cleaning cycle.
Which one among the seven batteries that we talked about impressed you the most? Please share your thouhts with us in the comments section below.
Last update on 2020-04-06 at 16:28 / Affiliate links / Images from Amazon Product Advertising API