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soldering issue

I bought a new hglrc all in one pdp and esc board. As i went to solder on the xt-30 i noticed that the solder with not stay on the pad. It wont stick. seems like there an oil or something that is hindering it. any advice?


Well-known member
I have had issues with particular brands of connectors. I usually end up roughing up the surface with a small needle file (fine sandpaper would work as well.) That and some extra flux usually clears it up.


Well-known member
It could be left over flux or impurities from manufacturing. You can use IPA on a swab to clean the contact, as noted a separate flux will help, as will gentle abrasion.


Well-known member
Along with everyone elses coments are you getting it hot enough? For battery connectors I will use my Weller 240-350 watt soldering gun.