@Pulc 

It seems like this device can only be charged up to 97%, then the error prompts and that stops the charging process, is that correct? Will the robot vacuum continue to work when the battery level drops below 97%? Will the error disappear?

  @Pulc 

Did you reset or restart the vacuum? How did you do the "reset"?

Please provide the device Mac address of your RV20 Mop to me via private message, our team will help to take a look.

How to check robot vacuum's Mac address

1. Remove the water tank and check the label on the vacuum itself;

2. Enter Vacuums tab in the Tapo app, click Smart Cleaning, go to device's Settings page, tap the model to check device's info.