my irobot braava jet m6 won't turn on at all, no lights, nothing. what's wrong?

Diagnosis

The iRobot Braava Jet M6 utilizes a "deep sleep" or shipping mode designed to prevent the lithium-ion battery from draining during transit or long-term storage. When the robot is in this state, the internal circuitry disconnects the battery from the main logic board. This results in a "dead" appearance where the light ring remains dark, the Clean button is unresponsive, and the robot produces no audible alerts. To confirm if the robot is simply in shipping mode or actually suffering from a hardware failure, check the charging contacts on the underside of the unit. If the gold-plated pads are clean and the charging station is plugged into a live AC outlet (confirmed by a light on the base), but the robot remains silent for the first 60 seconds of docking, it is likely in a deep discharge state. This happens when the voltage drops below a critical threshold, requiring a "trickle charge" period before the system can boot the OS and illuminate the LED ring.

How to Fix It

To wake the Braava Jet M6 from shipping mode or a deep discharge state, follow these precise steps to ensure a proper electrical handshake between the base and the robot:

1. Ensure the charging station is placed on a hard, level surface. Avoid thick carpets that may cause the base to tilt, as this prevents the charging pins from making a flush connection.
2. Inspect the two gold charging contacts on the bottom of the Braava Jet M6 and the two spring-loaded pins on the charging station. Use a dry microfiber cloth or a cotton swab dipped in 70% isopropyl alcohol to remove any oxidation or residue.
3. Manually align the robot so the charging contacts are centered over the base pins. Gently push the robot firmly onto the base until you feel it seat completely.
4. Leave the robot undisturbed on the base for at least 30 minutes. Do not press the Clean button during this initial phase, as interrupting the trickle charge can reset the wake-up sequence.
5. Observe the light ring. It will typically flash or pulse white once the battery reaches a minimum voltage threshold. Once the ring glows solidly or begins its standard charging animation, the robot is active.
6. Press and hold the Clean button for 3 seconds to initiate a manual start and confirm the system is fully operational.

If That Didn't Work

• Perform a Hard Reset: While the robot is on the charging station, press and hold the Clean button for 20 seconds. Release it, wait 5 seconds, and then press it once more. This forces the firmware to reboot and can clear a frozen logic board that is preventing the power-on sequence.
• Check the Power Adapter: Inspect the power cord for any kinks or pet chew marks. If you have a multimeter, test the output of the power brick to ensure it is delivering the correct voltage to the base. A faulty adapter will provide enough power to light the base (if applicable) but not enough to charge the battery.
• Battery Terminal Inspection: If the robot has been stored for over six months, the battery may have fallen below the recovery voltage. Remove the battery compartment screw, unplug the battery connector from the motherboard, wait 30 seconds, and plug it back in firmly. This "power cycle" can sometimes jumpstart the charging circuit.
• Replace the Battery Pack: If the unit remains unresponsive after 24 hours on the charger, the internal lithium-ion cell has likely failed or entered a permanent fault state. Replace the battery with a genuine iRobot replacement part to restore power.

Heads Up

• Never store the Braava Jet M6 with a completely dead battery; always leave it on the charging station when not in use for extended periods to prevent permanent cell degradation.
• Avoid using abrasive cleaners on the charging contacts, as scratching the gold plating increases electrical resistance and can lead to intermittent charging failures.
• Ensure the charging station is plugged directly into a wall outlet rather than a surge protector or extension cord, which can sometimes cause voltage drops that prevent the "wake up" signal from reaching the robot.
• Keep the area around the charging station clear of debris; if the robot cannot dock perfectly straight, it may only partially charge, leading to frequent "battery low" errors during cleaning cycles.