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 What age range is the BURSTkids Toothbrush recommended for? How often should I change my BURSTkids Toothbrush head? Can my child use the BURSTkids Toothbrush with a loose tooth? How often should I clean my BURSTkids Toothbrush? Is the BURSTkids Toothbrush dentist approved/ADA accepted?