I thought that this might be useful information for all the users who, like me, have switched from the TP2 to the Evo. The Evo uses the exact same battery as the TP2. In fact it has the same model number: Rhod160. All of the specifications are the same, so it would seem to be okay to use a TP2 battery in an Evo. I am currently tring it out right now and do not see any reason why it would lead to a problem. Looks like i went from 1 Evo battery to 3.