- 05-17-2010, 07:54 AM #2
I think you're right to be sceptical!
I've read a review (sorry, but can't remember where!) which indicated it was a complete waste of time!
The only to get the best out of your battery and calibrate it is to do as recommended by Apple. Namely, once a month, allow the battery to completely run down (until the iPhone shuts itself off) and then completely recharge.
- 05-17-2010, 07:56 AM #3