Frequently Asked Questions
Q: How do I find the correct battery for my Roomba model?
A: Check your Roomba model number on the label underneath the robot, then find the corresponding series in the compatibility table on this page. For i/j Series (i3-i8, j5-j9), look for ABL-D2, ABL-F, or ABL-D1 variants. For s Series (s9, s9+), select ABL-B. For 600-900 Series, choose the 4376392 or Xlife 4400mAh. For Braava Jet, select ABL-C. If unsure, check your original battery's part number printed on the label and match it to the listings.
Q: How long does a replacement Roomba battery last on a single charge?
A: Runtime depends on the battery capacity and your Roomba model. The 3300mAh ABL-B provides approximately 90-120 minutes on an s9. The Xlife 4400mAh delivers up to 2 hours on 600-900 series. ABL-F high-capacity variants reach 2.5 hours or more. Actual runtime varies by floor type, suction mode, and the age of the robot's motor and brushes.
Q: What does iRobot-decoded BMS mean and why does it matter?
A: Roomba batteries use a proprietary communication protocol between the battery's BMS (Battery Management System) chip and the robot's firmware. An iRobot-decoded BMS means our batteries correctly emulate this protocol, so the Roomba recognizes the battery without error codes, charges normally, and reports accurate battery level in the iRobot HOME app. Cheap batteries without decoded BMS often trigger charging errors or incorrect battery percentage readings.
Q: How many charge cycles do these batteries last?
A: All our Roomba replacement batteries are rated for 800 or more charge cycles before capacity drops to 80 percent of the original rating. We use A-grade LG and Samsung INR 18650 cells with ±3 percent capacity tolerance. Each battery is cycle-tested before shipping. With typical daily Roomba use, this translates to approximately 2 to 3 years of reliable service.
Q: Which Roomba models are NOT covered by batteries in this collection?
A: This collection covers Roomba i Series (i1-i8), e Series (e5, e6), j Series (j5-j9), s Series (s9, s9+), 500-900 Series, and Braava Jet M6 series. It does NOT cover the very earliest Roomba models (Original, Pro, Discovery 400 series), Roomba Combo with mopping (j7 Combo, j9 Combo), or Scooba floor-washing robots. If your model is not listed, contact us with your robot's model number.
Q: How do I install a replacement battery in my Roomba?
A: Installation varies by model. For i/j/s Series: flip the robot, remove the bottom plate screws and edge brush, unclip the old battery, connect the new one, reassemble. For 600-900 Series: flip the robot, remove the four screws on the bottom plate, lift out the old battery, insert the new one, replace the plate. For Braava Jet: the battery compartment is under a rear cover. All installations take 5-10 minutes with a Phillips-head screwdriver. Charge fully before first use.
Q: What certifications and warranty do these batteries have?
A: All batteries are CE, FCC, RoHS, and UN 38.3 certified for safety and transport compliance. They include built-in protection against overcharge, over-discharge, short circuit, and overheating. Every battery comes with a 12-month replacement warranty and a 60-day no-questions return policy. If your Roomba shows a battery error after installation, try removing the battery for 10 minutes, then reinstalling and charging fully.
