L40 Ultra says “Charging” but battery isn’t actually charging

My Dreame L40 Ultra says it is “charging” when docked, but the battery percentage is not actually increasing.

It docks normally and the app/robot recognises that it is on the charging station, but after a short while the lights on the base go off and it stops receiving power even though the app can still say “charging”.

I have already:

* Cleaned and dried the charging contacts/pins on both the robot and dock
* Checked the robot is sitting correctly on the dock
* Tried it with/without the mop pads attached
* Restarted the robot and base
* Tried a different wall socket and an extension from another socket

I initially wondered if my wall socket was faulty because another item plugged into the same area seemed to lose power/dim, but I’ve now tried the Dreame from another power source and I’m still having the charging problem.

The robot has also shown red lights at times even when it isn’t actively charging.

Has anyone had this happen with the L40 Ultra? Could this be a fault with the dock/power supply, charging contacts, or the robot battery itself? Is there anything else I can test before contacting Dreame for a repair/replacement?

You've covered everything I'd have suggested, so that's a support job now — email dreamesupport@dreame.tech and see what they say.

Hello,

We are sorry for the inconvenience caused.

Based on the information you provided, you have already completed the troubleshooting steps related to the charging issue. If the problem still persists, we recommend that you contact our after-sales service team and provide the following information:

Purchase invoice / proof of purchase
A photo of the device SN (serial number) label
A brief description of the issue, along with photos or videos showing the problem
The troubleshooting steps you have already performed

Our after-sales service team will review your case and inform you of the available solutions and next steps.

0808 502 1616
aftersales@dreame.tech
(Mon. to Sun. 9:00–18:00)

Thank you for your understanding and support.