[suicideneil]

I was thinking of a normal hardcase lipo, with the built in female bullets ( 2 or 3s I suppose ), inserted face down into a special tray that had matching male bullets built into it. You'd get an instant connection that was capable of supporting high currents without any extra adaptors required as such ( bullets in the tray could be dirrect soldered to the esc wires if they are long enough ). All you'd need is a simple retaining bar that could click or slide into place, something likemthe way the emaxx 3905 ones do for example- would make for quick change overs as the bullets would be lined up perfectly everytime.

Vaguely similar to the sketch above, but without requiring special lipo cases as such- you'd just be tied to one brand or size of hardcase lipo, but even then you could in principle have a case you can open up and insert new batts inside, then solder on the power wires to the fixed bullets that are part of the case and seal it up again.