If the battery have been left drained for a few days, it's dead and need to be replaced. Hardware thing, NO software alternative.
I don't think that there is a battery driver.
You should read the user manual. If you don't have the printed version, you can get the PDF version from the Sony web site.
Check that the contacts of the battery are undamaged and clean. Do the same for the contacts of the battery compartment.
Electro, December 2015