Please ensure you've left the device to charge for roughly 10 hours before trying to turn on the vacuum.
These devices are quite powerful and when fully charged should operate for around 20 minutes.
If you're having any issues with operation, confirm that any brushes and filters are clean and free of any build up that could potentially block the system. This includes tangled hair.
Dirt and blockages in these filters are generally the cause of suction loss or other issues.
Please see the following link which helps demonstrate this. The image on the left is a vacuum that has a loss of suction due to blockages and the image on the right is a clean vacuum head:
If you are still experiencing issues following this, please contact our Support Team via your Kogan.com account.