Hello, thank you for your suggestion, on the basis of which the supplier contacted us and would like to respond below.
"Hello, this piece most likely has an undervoltage of the battery. Please contact our technical support department at
[email protected], where our colleagues will arrange for your vacuum cleaner to be collected for service and the battery to be replaced. Regards Team Sencor"
Please do not hesitate to contact us in case of need. Thank you and have a nice day, Ondřej - Alza expert