My problem is I can get job done on positives of cells within few seconds (I didn't use flux because I had no problem on positive sides) whereas I cannot pretin on the negatives even I used flux. My solder iron is 60 watt and I used chisel tip. I have no problem on soldering on bars ,wires, positive sides of the cells(ni-mh sc 4600) but only on the negatives. I have no clue what's gone wrong, the only thing I can think about is my iron cannot efficiently put temperature on larger surface like negative side. Is there any tips you can share?
Originally Posted by
theDr
Using a higher wattage soldering iron makes it easier to make a mistake and damage the cells. A hotter iron means you have to work quicker, and if you don't know what you're doing you're asking for trouble.
I've been using a 40w iron for years and years and never had trouble putting together packs. But if you're not using flux and pre-tinning the cells and tabs before beginning I can see how you're having problems.