I see a red light flashing when My BURST Original Toothbrush charges, what does it mean? September 27, 2023 20:34 Updated The red light on your brush will illuminate while charging. When it's done charging, it will turn off. Related articles What’s the battery life on my BURST Original Toothbrush? How to reset your BURST Original Toothbrush There is a gap between my BURST Original Toothbrush head and the handle, Is this normal? How do I charge my BURST Water Flosser? What voltage should I charge my BURST Original Toothbrush using?