Originally Posted by Oren.a
Do someone know if there is any option to upgrade the buttery
Your battery packconsists of 15 replaceable modules, consult the main dealer and get a cost proposal https://www.karmaautomotive.com/locator
or someone who has very good knowledge of the technology in your car.
A new battery (not really new but "stock item new") from the main dealer is expensiv and there are alternatives like battery systems from PowerSource at http://www.pwr-source.com/