In case anyone cares the kobalt drill pack cranked out peaks of 15amps at 20v on my toy razor scooter. Rode around at an average of 200watts for about 5min and the factory BMS never went into any thermal or overload condition.
So my conclusion is that somebody could throw together a cheap protected pack by just stacking these together unmodified.
With current prices of built packs its not a killer deal for a high powered setup. However, I'm quite satisfied with my $20 solution for the toy scooter or as an easy pack for some headlights.