My understanding, voltage push mode can charge lipos. Just make sure the flex is off. If I remember Super 2's had that, not super 3's.
I have 2 Super 2/3 that sam capri in canada fixed up for me, but now are not working at all. I have 2 quad IQ's that do work, and use from time to time, and 2 Flex IQ's.
I will look for a local guy to repair mine. If I need to get info on the components within the board, does anybody have that info? I know Sam in canada did, but he has stopped doing those for a long time now. Im sure he has the info, but I am sure someone else does.