Following Quote from IOTA "This unit makes an excellent DC-DC Converter with a 130-190vdc input and 13.6vdc "no load" output. You will need to cut the AC plug from the input cord and Connect the Black wire to negative and White wire to Positive on your Battery Pack."
The PowerMax Converter/Battery Charger from PowerMax converts nominal 95-144 VDC or 108-132 VAC to 13.4 DC voltage for both DC load operation and 12V battery charging. The New PowerMax Converters have a lower price then the IOTA's.