High capacity battery for the Nokia N95

Well well well...now isn't this attractive to us Nokia N95 users? A 1400 mAh battery. The manufacturer is Chinese and they claim this battery will last 55% longer than the original. Oh and the battery is also 55% bigger than the original so they throw in a customised back battery cover. This would be great, but I am afraid of the battery blowing up...so I will have to think twice about this one.