Hi everyone,

starting a general thread here like everyone.

Things are moving on well, tested about 600 cells so far :Smile

Im doing a practice run for the soldering and something doesnt seem right.
If you look at the picture you can see the solder is just a ball sitting on the cell and its like brown around it. its not a flat blob like from other people. The one column, third from the right is a different solder (the small roll) and that one looks better.

I have an 80W soldering iron, reaches about 490°C according to the manual. Too hot?

What am I doing wrong?
Please help.
Thanks!

I didn’t find the right solution from the Internet.

References: http://www.diypowerwalls.com/t-J-Mans-project

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