In this how-to the pics are still there -

http://www.rcuniverse.com/magazine/a...article_id=481


I've only seen cells soldered end to end for pacs made specifically for RC boats - there are stick pacs assembled this way - those you have to break apart. I have a special soldering head that does it, but have never used it since I run side-by-side so I can use a discharge tray for better pac performance.

Use a pr of needle nose pliers to wind off that metal tab that usually connects cells end to end. One side usually will pull off, the other usually needs pliers to wind it off.

Use an iron with enough watts and big enough tip to get the job done quickly. You want to be on and off the cells with the heat as fast as you can cause excess heat will damage the cells. I've see guys build great looking packs that were so damaged they had almost no capacity.