This worked for me. Can You Reset A Dyson Battery? Yes, it is possible to reset your Dyson battery. That is usually done as a troubleshooting step when the vacuum doesn’t run, even when the battery is charged, and you’re pulling the trigger. To reset your Dyson battery, you’ll have to: (1) Unplug the charger from the wall. (2) Plug the charger back in again. (3) Connect the charger to the Dyson vacuum. (4) Pull the trigger and hold for 20 seconds, even though the vacuum doesn’t turn on. (5) Let go of the trigger. Remove the charger from the vacuum and continue using it like normal. This combination of steps will reset the battery and get your Dyson vacuum running normally again.