What is the battery life of the BURSTkids Toothbrush? July 27, 2021 23:19 Updated A single charge on the BURSTkids Toothbrush should last up to 3 week when brushing twice daily! Related articles How will I know my BURST Original Toothbrush is charging? What is the battery life of the BURST Curve Toothbrush? Can Kids still use the BURST Toothbrush? How often will I need to change the batteries on my BURST Nova Toothbrush? Why is BURSTkids Toothbrush best for kids?