It will be bad, unfortunately. The car depreciates a lot, mainly due to hybrid drivetrain, and 2 doors (somehow Malaysian used car market does not favour 2 door cars). If anyone says that the resale value is good for the CRZ, they are smoking something which they ought not to....
As for the battery price, no one knows for sure and I don't think Honda Malaysia knows the exact price too, since no one have changed it before.
Good luck!