I gotta try that, I personally suck with soldering. Sometimes I get lucky and the tin drops seamlessly, but other times it just gets stuck on the soldering iron tip lol. Any advice?
If you want to solder to an 18650, PLEASE DO IT USING THE CORRECT METHOD!! Yes there is a correct method to soldering directly to batteries. You use a cold damp cloth to cool the joint asap after soldering, and keep soldering time to a MINIMUM.