My Xperia Sola has no battery problem which was my brithday present send from a Japanese friend. In the box has 4x NFC tags, 1x car charger, etc. I get approx. 16 hours capacity when fully charged. My basic Xperia Sola network was set to NFC (ON) because I use it as payphone all the time, and Auto-Sync enabled. Calls is about 3 hours. Data is about 3 hours. Music is about 9 hours. Video is about 2 hours. Standby is about 140 hours.
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