sorry I just saw this mesage. I had the conversion done right in my local phoenix area. It was about 16K but the feds give a 10% incentive on my taxes. It's lithium with a real world range of over 30-35 miles every day. It's the only plugin system with a pure EV button so I can drive all electric. If we do go farther we just repower and go hybrid at 50 mpg.