here is what i have some up with for a solution for an 1/8 scale quick release battery tray. It is actually a system that includes the battery and the tray, this way the connections are made when you snap the battery in rather than having to plug in a deans etc. This is the first version, and im sure there are improvements that can be made, but it seems like a possible idea to quicken the time it takes to swap packs.
take a look, tell me what you think. ill post some closeups to the latching mechaninism later tonight.
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As you can see the battery leads are incorporated into the latch itself, and the rear of the battery is held in place by the slot on the backside of the battery.
I have sketches that clarify the latch, ill post them later.