[jakun]

Here is a
Kelly Opto-Isolated DC Controller: KDH12801E,24-120V,800A PM with Regen for sale.
It is used, but only for 10 hours. I sell it, because i change my vehicle to a brushess system. I'll sell it for 1100 $, delivery costs from Germany included.

Here is the descripion from Kelly Controllers:

KDHE High Efficient PM Motor Speed Controller
Kelly KDHE programmable high power PM brushed DC motor controllers provide efficient, smooth and quite controls for electrical vehicles like golf cart, go-cart, electric motorcycle, fork lift, hybrid vehicle, as well as electric boat and industry motor speed control. Motor speed controller uses high power MOSFET, fast PWM to achieve efficiency 98% in most cases. Powerful microprocessor brings in comprehensive and precise control to brushed motor controllers. This programmable PM brushed motor controller also allows users to set parameters, conduct tests, and obtain diagnostic information quickly and easily.

Features:
•Opto-isolated technology achieve stability.
•Intelligence with powerful microprocessor.
•Synchronous rectification, ultra low drop, and fast PWM to achieve very high efficiency.
•Current limit and torque control.
•Low EMC.
•LED fault code.
•Voltage monitoring on voltage source 12V and 5V.
•Hardware over current protection.
•Hardware over voltage protection.
•Support torque mode, speed mode, and balanced mode operation.
•Configurable limit for motor current.
•Battery protection: current cutback, warning and shutdown at configurable high and low battery voltage.
• Rugged aluminum housing for maximum heat dissipation and harsh environment.
•Rugged high current terminals, and rugged aviation connectors for small signal.
•Thermal protection: current cut back, warning and shutdown on high temperature.
•Configurable high pedal protection: Disable operation if power up with high throttle.
•Brake switch is used to start regen.
•0-5V brake signal is used to command regen current.
•Easy installation: 1-4V "Hall Active" throttle or "3 Wire" potentiometer(<100K) can work.
•Standard PC/Laptop computer to do programming. No special tools needed.
•User program provided. Easy to use. No cost to customers.

General Specifications:
•Frequency of Operation: 16.6kHz.
•Standby Battery Current: < 0.5mA.
•Controller supply voltage range, PWR, 10 to 30V(24V is preferred).
•Supply Current, 200mA @ 12V, or 2.5W.
•Configurable battery voltage range, B+. Max operating range: 18V to 136V.
•Standard Throttle Input: 0-5 Volts(3-wire resistive pot), 1-4 Volts(hall active throttle).
•Analog Brake and Throttle Input: 0-5 Volts. Producing 0-5V signal with 3-wire pot.
•Reverse Alarm, Main Contactor Coil Driver, Meter.
•Full Power Temperature Range: 0℃ to 50℃ (controller case temperature).
•Operating Temperature Range: -30℃ to 90℃, 100℃ shutdown (controller case temperature).
•Motor Current Limit, 1 minutes: 800A
•Motor Current Limit, continuous: 360A