Charging Error 2 — Battery not detected
Charging Error 2 means the battery is not charging. iRobot’s guidance points to the battery itself — most often a worn-out, faulty, or non-authentic battery — though dirty charging contacts can also prevent charging. Clean the contacts, reseat the battery, and replace it with a genuine iRobot battery if it persists.
- Keep using it?
- Yes, with caution
- DIY difficulty
- Easy
- Verified against
- homesupport.irobot.com ↗
How to fix it
- Open the battery compartment and remove the battery.
- Check for and remove any yellow pull tab.
- Wipe contacts on the battery and inside the compartment with a dry cloth.
- Reinstall and place on Home Base for at least 3 hours.
- If still not charging, replace the battery with an iRobot OEM Lithium-Ion battery.
Why it happens
Typical signs: 'Charging error 2' voice prompt · Robot won't power on or charge · Battery indicator stays red or off
- Pull tab still installed Yellow battery pull tab not removed on new units.
- Dirty battery contacts Oxidation on battery terminals or internal contacts.
- Battery at end of life Li-Ion batteries typically last 2-3 years; capacity has dropped below operational threshold.
- Failed battery cell Internal protection circuit triggered permanently.
Parts you may need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
- Roomba replacement battery (Lithium-Ion) Common replacementAmazon →
More iRobot robot vacuum codes
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: homesupport.irobot.com.