I've never even heard of these before. They look great, I wonder if button to can produces a large enough contact area to pass high currents as well.

I'm always having to replace cells requiring some soldering. This year I have 2 sub C cells and one AA cell from a transmitter pack fried. I will probably end up using the 4/6 good sub c cells for a receiver pack in a gas boat. I'm sick of replacement.

Ryan