I recently upgraded my Alaskan to two lithium batteries and had question as to whether the IOTA charger converter would have the proper voltages for lithium. On talking to IOTA, they advised me that the voltage on a IOTA D30 IQ4 would be too high for lithium batteries, 14.8 volts. I asked if there was a way to rectify this problem and they sent me a link to a modification one can do on the IOTA. What you are doing is adjusting the voltage output pot. I have not done it yet on my Alaskan as the IOTA is buried in the back of a cabinet. But here is the link ,if it is useful for anyone else I'Ill let you know how it works when I get the IOTA out .Thanks
http://www.rivergatedist.com/SlotAdjustment.htm
http://www.rivergatedist.com/SlotAdjustment.htm