written by on 27/11/2013
You never know how fast a battery might die, but the vibrating brush function is only available while the original battery is working. A simple option to open the brush and let the customer be able to switch batteries might have been great, and it doesn't seem so hard to design it that way.
However, in spite of how easy it seems to change the battery, it is not designed for normal customers to do that.
* Funny direction written on the box, it tells us what to do when battery dies:
"Simply throw it away and use a new one"?!