I've had this battery for around a year and a half, and with the battery dying consistantly on the other iO9 I ordered, this is also coming to an end. That does not even include the mold issues which frequently appear where the toothbrush head is meant to go!

Worse toothbrush ever battery died within a fews months of use. This is the 2nd order, though it was just one off. 2nd toothbrush same problems battery died again! For the price I expected quality!!! Stress waiting for repair!