Big and brash. Comes with a new back that makes your Galaxy S look like it's been on a diet of doughnuts with chips. The standard back is 7mm in depth and the back to accommodate this mini power station of a battery is 16mm in depth, so the phone ends up almost 1cm thicker. However on the plus this mega-battery does last for ages.



Actually though, I've discovered that if I "overcharge" my normal battery (continue charging it after the lights/charge meter indicate full charge), and pretty well run it down completely (I have bought a second normal sized battery), then only turn on as needed wifi (I have "unlimited" 3G data in the UK), Bluetooth, GPS or auto screen brightness (I find the lowest screen brightness on the Galaxy S plenty bright enough for most indoor situations), the normal sized batteries last a working day of heavyish use and a whole day of moderate use. In retrospect I might just have bought 2 extra normal sized batteries and an out of phone charger.



The advantage of these mega-batteries then is if you're going to have a long journey time or you're going to a place where it'll be inconvenient to charge a phone or if you are simply intending constant heavy usage.