iRobot Roomba Replacement Batteries

Replacement Batteries for iRobot Roomba Robot Vacuums

iRobot's Roomba lineup spans more than two decades of robot vacuum models, and the battery needs vary across generations. We stock replacements for the most popular Roomba series, from the early 400 Series through the current i Series — covering both the NiMH batteries used in older models and the lithium-ion batteries found in newer ones.

Which Roomba Series Do We Cover?

Our Roomba replacement batteries cover the following series:

• Roomba 400 / 4000 Series — older models including the Discovery and Original series
• Roomba 500 Series — including the 530, 560, 570, 580, and related models
• Roomba 600 Series — one of iRobot's most popular and long-running lines
• Roomba 680 — a widely used mid-range model with its own battery configuration
• Roomba 700 Series — including the 760, 770, 780, and 790
• Roomba 800 Series — including the 860, 870, 880, and 890
• Roomba 900 Series — including the 960 and 980
• Roomba i Series — including the i7 and related models
• Roomba s Series — including the s9 and s9+
• Roomba Combo i5 — iRobot's hybrid vacuum and mop combo
• Roomba J7 / J9 Series — including the Roomba Combo j7+ and j9+

We also carry batteries for a handful of other iRobot products, including the Scooba floor scrubber and LOOJ gutter cleaning robot.

How to Find the Right Roomba Replacement Battery

The easiest way to find your battery is to check the bottom of your Roomba for the model number — it's printed on a label on the underside of the robot. From there, match your model number to the series it belongs to (for example, a Roomba 690 falls under the 600 Series) and look for the corresponding battery in our listings above.

Alternatively, if you still have the original battery, the battery part number is printed on its label. iRobot batteries are typically labeled with part numbers like ABL-B, ABL-G, or similar. You can search or browse by that number directly.

If you're not sure which battery fits your Roomba, don't guess — call us or send us a message with your model number and we'll confirm the right battery before you order.

NiMH vs. Lithium-Ion Roomba Batteries

Depending on your Roomba's age, it may use one of two battery chemistries:

• NiMH (Nickel-Metal Hydride) — used in older Roomba models, including most 400 and early 500 Series robots. These are reliable and affordable, but heavier and slightly less energy-dense than lithium.
• Lithium-Ion (Li-Ion) — used in newer models from the 500 Series onward, and standard across the 800, 900, and i Series. Lithium batteries are lighter, charge faster, and generally deliver longer runtimes than their NiMH equivalents.

In some cases, a lithium-ion upgrade battery is available for Roomba models that originally shipped with NiMH — check the individual product listing for compatibility details.

Signs Your Roomba Battery Needs Replacing

Robot vacuum batteries wear down gradually, so the decline can be easy to miss until performance drops off noticeably. Watch for these signs:

• The Roomba returns to its dock much sooner than it used to mid-clean
• Runtime has shortened significantly from what it was when new
• The Roomba flashes a battery error or "charging error" indicator
• The robot won't power on at all even after a full charge cycle
• The battery takes much longer to reach a full charge than it used to

In most cases, a fresh battery brings a Roomba back to like-new performance. It's a worthwhile repair on an otherwise functional robot.

How to Replace a Roomba Battery

Replacing a Roomba battery is a beginner-friendly repair that typically takes just a few minutes. The general process is the same across most models:

• Flip the Roomba upside down and locate the bottom cover or battery compartment panel
• Remove the screws holding the panel in place (a small Phillips-head screwdriver is usually all you need)
• Lift out the old battery and unplug the connector
• Plug in the new battery and press it into place
• Replace the panel and screws

iRobot also provides battery replacement guides for specific models on their support site if you want step-by-step instructions for your exact robot.

Frequently Asked Questions

Are your Roomba batteries OEM or aftermarket?

Our replacement batteries are aftermarket — they are not made by iRobot, but they are manufactured to match the original battery's voltage, capacity, and connector type. The result is a battery that installs and performs the same way as the original at a lower price point. Each battery comes with a 1-year warranty.

Will a replacement battery void my Roomba's warranty?

Under the Magnuson-Moss Warranty Act, manufacturers generally cannot void a warranty solely because you used a third-party replacement part. That said, if your Roomba is still within iRobot's original warranty period, it's worth reviewing the terms before replacing the battery yourself.

How long will a replacement Roomba battery last?

Under typical use, a lithium-ion Roomba battery will generally deliver 2 to 4 years of service before capacity starts declining noticeably. NiMH batteries tend toward the shorter end of that range. Running regular cleaning cycles, avoiding prolonged storage in a fully discharged state, and keeping the robot in a moderate temperature environment all help extend battery life.

Can I use a lithium-ion battery in a Roomba that came with NiMH?

For some older Roomba models, yes — lithium-ion upgrade batteries are available that are compatible with robots originally designed for NiMH. These are noted in the individual product listings. If you're considering an upgrade, contact us to confirm compatibility with your specific model before ordering.

What does the 1-year warranty cover?

The warranty covers defects in materials and workmanship under normal use. If a battery arrives damaged or fails to hold a charge within the warranty period, contact our customer service team at 1-800-405-2121 or online and we'll take care of it.