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6 posts

Wannabe Geek

#261987 27-Dec-2019 21:10
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Does anyone know where in Wellington I can get my bullet connectors on my Lipo batteries and drone changed over to XT90 connectors? (happy to pay).


I’ve had a go but found out the hard way soldering isn’t in my skill set! 



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  #2382009 27-Dec-2019 22:44
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Looks pretty simple. If you lived in Hamilton I'd be happy to help.


What sort of soldering iron do you have. It needs a good clean tinned tip.


If I've looked at the connections correctly the best way to solder these is as follows;



  1. Strip the wire to the correct length to fit fully into the connector receptacle with only minimal bare wire showing.
  2. Tin the bare wire, in other words soak it in molten solder such that the wires are covered in solder but still retain their original shape/outline.
  3. Ideally hold the plug in a small vise or similar with the receptacle where the wire goes facing up. Using a vise means you have both hands available for the following steps.
  4. Fill the receptacle in the connector with molten solder by applying the iron to the outside of the receptacle and feeding the solder into the receptacle till the receptacle is full. This can be a little tricky at times as hot air trapped in the receptacle can blow the molten solder out, once you purge the air ( if you happen to get any trapped) you should have no problems filling the receptacle. Note: The solder will melt into the receptacle much better if you have a small (and I mean small) blob of solder on the tip of the iron. This blob of solder is used as the contact point between the iron and the outside of the receptacle. This is where the heat gets transmitted to the receptacle.
  5. Fill the other receptacles to be used.
  6. Holding the tinned wire in one hand, place the soldering iron tip against receptacle. Once again a small blob of solder might be needed to ensure a good heat transfer, though there is likely to be some solder left on the outside of the receptacle from Step 4. Place the iron against the solder left behind from Step 4.
  7. Once the solder in the receptacle is molten insert the tinned wire into the receptacle, remove the iron from the receptacle and hold the wire very steady for a few seconds until the solder solidifies.
  8. Repeat for other receptacles.
  9. Job done!!!!!



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  #2382029 27-Dec-2019 23:22
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Be very, very careful with these batteries. Shorting them makes a massive BANG and I have taken a huge chunk out of a screwdriver (by accident, mind you) by doing it.


If you've got the connectors then I can do it - I am however based in Paraparaumu.


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  #2382044 28-Dec-2019 07:25
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Yep, listen to Michael!

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Ultimate Geek

  #2382077 28-Dec-2019 10:26
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Your local friendly auto electrician would be your best bet.

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Ultimate Geek


  #2382153 28-Dec-2019 13:06
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Your local friendly auto electrician would be your best bet.

Oh please no! Won't someone think of the children?

Having seen the work of several auto sparkies, you'd be better off heating up a poker in your fire and mashing at your terminals with that.

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