Yes, converting the older Li-ion is my intention Harry, only delayed because the Q bike can still make efficient use of it even though it was previously dud in Quando and Torq. Come winter's colder weather though and it will be finished if not before, so that will be a good time. Also, the current silliness over the nickel "shortage" and NiMh cell prices will be over by then and larger cells might be here.
I doubt if it's possible to modify the charger, even though it's the same style from the same manufacturer. The problem is the Li-ion one cuts at a voltage rise signal, probably from the Li-ion battery's own electronics. NiMh chargers have cutout circuits operated by a voltage passed by a thermistor in the battery, that operating on the temperature rise just before the end of charging. That low voltage for the thermistor is generated by the NiMh charger, that circuit not part of the Li-ion charger's board.
I've also got two Li-ion chargers so I sympathise. If I do discover a way I'll definitely let you know though.
Ian has converted an eZee Li-ion to NiMh by the way.
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