The batteries in our toothbrushes last approximately 60 minutes without needing to be
recharged, which enables you to clean your teeth approximately 15 times (4 minutes per
cleaning session). Check the LED stripe on the toothbrush from time to time – you'll see the
charging level every time you remove the handpiece from the charging station or when
switching the device off. The stripe features 7 levels that show how much battery the device
has left. Once you have reached the lowest battery level and the stripe lights up red,
your device should be charged. NOTE: If your battery is completely empty, you will not see
any lights on the toothbrush while it is charging. It will take a few minutes for the device
to reach a low level of energy to light up. Last but not least, it is important to note that the
brushing power of the device will be the same, regardless of how much battery it has left.