Converts an industrial power supply made by Coltek AE series or GZN into a powerful LiFePO4 AC coupled battery charger.   Purchase the power supply from any third party online vendor for the be best price and then add this BatteryCharger controller.  Shunt reader feature with a shunt will allow you to get an accurate measurement of the current going in and out of your battery bank and calculate State of Charge (SoC) and other battery health information.  Requires a 75 mV shunt.  You can purchase a Shunt here or use your own.  The size should be the minimum size that meets the largest of either your maximum current draw or charging current.  Keep in mind the  higher the current rating, the less the resolution.  There is basically 2048 steps for each side.  So for example, a 75 mV shunt rated at 200A has output current in steps of about 0.1 A (200/2048) where as one that is rated at 800 A has output current in steps of about 0.4 A (800/2048).

The temperature probe option is to allow the BatteryCharger to stop charging if the ambient battery temperature is too low or too high.