Charger Fit Casio

Charger Fit Casio
Are all Casio Exilim camera chargers the same???

I have a Casio Exilim Camera and so does my mum, i have always believed that they are the same, and i have recently lost one (not sure if it was mine or my mums) and have lent the other to a friend who also has a casio exilim camera – she claims her battery does not fit.

so im wondering whether they should all be the same.