No me gusta.
1. They used nickel for series connection. Each strip looks like it's 10 mm wide, and they are 5 of them. So if they are 0.1 mm that gives us equivalent copper area of 1.25 mm2, and if they are 0.15 mm thick, that gives us 1.85 mm2. Which is horrible, since all you battery current will pass there! You should add links made of copper wire, use 2 mm2 or similar solid wire and solder it between cells, not on the cells. You have 9 batteries in parallel, and each battery can give 20 A continuous, so that's 180 A. Even at 3C that's 67.5 A, which is far too much for this thin links. This is typical for chinese manufacturing. Imagine the voltage drop...
2. They used old cells. Ok, maybe not too old, but new ones are green, not blue.
3. They soldered output cables directly on cell top or bottom, so they heated cell too much. They should have soldered on nickel between two cells, that way they wouldn't heat cells at all. You can try that yourself, try melting solder directly in the middle of the cell, and on the nickel between two cells and you will see the difference.
4. They weld anywhere on the bottom of the cell, however there is a no weld zone in the center of the cell bottom.
http://www.endless-sphere.com/forums/viewtopic.php?f=14&t=59438
Positive note - they use proper insulation.
