I bought this unit three years ago from Prolong for my 2nd Gen 2005 Prius. It has kept my Prius battery working an additional three years from when I had my first cells die. I’ve sold the car and the new owner didn’t want to mess with charging/discharging. All items in good shape. PD-PR Dischage Unit CO-PR Charge Unit Wiring harness for 2nd gen Prius $550 plus shipping from Ca.