Hey I Have 3 Kelly KDH07601A for sale. see the follow:
The 3 Kelly controllers, 2 on the vehicle and one as a spare, all working fine and all have regen capability. They are the KDH07601A series rated: 1200A for ~1s, 600A boost for 10s and 250A nominal. 24-72V system nominal with a peak system voltage at 90V. We run at a 72V nominal system. We can send these with the serial to usb converters we use to communicate with them and the wire harness for throttle/brake signal lines etc. These models do not support CAN. you can view the manual here:
http://tinyurl.com/cavsems
Cheers
Tyler