The first iPhone purchased will soon be celebrating their first anniversary. If the device is aging well like a good wine, some owners due to an intensive usage might have already notice that the battery charge does not last so long anymore. Of course, Apple had anticipated it and charges 70 USD for having the battery exchange to a new one.
If you do not want to pay such a high price, or can not afford to be iPhone-free for couple of days, then you could be interested by a battery kit as the one available from Dealextreme. It will then only cost 7.29 USD to get a new battery, including the tools required to perform the exchange. Of course, one needs to perform the operation carefully, and for this purpose, dealextreme is providing a step-by-step tutorial as a video: http://video.gearlive.com/video/article/q
