How often will I need to change the batteries on my BURST Nova Toothbrush? October 08, 2024 20:15 Updated The battery will last up to 4 weeks**Estimate when using a AAA Duracell battery Related articles How do I replace the batteries in my BURST Nova Sonic Toothbrush? What is the battery life on the Pro? What batteries should I use for the BURST Nova toothbrush? How often should I change my BURST toothbrush head? How many modes are there on the BURST Nova toothbrush?