Edit Step 10 ¶
To solder each connection:
Place the tip of the soldering iron against the solder pad.
Melt just enough solder onto the solder pad so that the contact leads hold firmly in place.
Remove both the solder and the soldering iron tip from the connection as soon as enough solder melts onto the pad.
Edit Step 11 ¶
Advanced Guide
For the last section, battery leads will be soldered to surface-mount solder pads. These type of joints are harder to solder because the lead has no solid anchor point (such as a thru-hole) to hold it in place during soldering.
To de-solder the joint, place a solder wick on top of the existing solder ball and press down on the solder wick with the soldering iron.
Once the solder melts and flows into the wick, remove the wick from the joint.
Repeat the same procedure on the remaining leads.
When a section of solder wick is saturated with solder, it should be trimmed and discarded.
Edit Step 12 ¶
We recommend that you clean the surface-mount solder pads with a soft cloth or sponge and a small amount of rubbing alcohol.
To melt a small bead of solder onto each solder pad:
Place the tip of the soldering iron against the solder pad.
Melt solder so that it forms a dome on top of the pad.
Remove both the solder and the soldering iron tip from the solder pad as soon as enough solder melts onto the pad.
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