how do you attach wires to a DIY LiFePO4 battery

[finefleisch]

I'm Making a 12v 100AH battery for 32650 cells and i was wondering what the best way to attach wires to the main positive and main negative. right now im just soldering directly to the Nickle strip is this fine or does someone have a better more secure way

thanks!

 

[Positronium]

Around 6:30 in the video is the best way I have seen. My packs are much smaller so I use the 10 AWG wire for similar effect.