David Holland 2 Posted September 9, 2021 Share Posted September 9, 2021 Evening, gents. Had a problem on Thursday with a 6S pack, connection was erratic (two other packs worked perfectly) and it seems that the spark when connecting high voltage lipos has eroded the plugs. I'm aware that this is a known phenomenon and I remember reading the solution, involving a capacitor, I think. Can anyone supply details of the fix, please. David Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted September 9, 2021 Share Posted September 9, 2021 A simple solution would be to utilise Jeti spark suppressing connectors. These use small resistors between the initial connecting ring and the main body of the connector which limit the current charging the input capacitors during the instant of connection. https://www.jetiuk.co.uk/index.php?main_page=product_info&products_id=472 Other sizes are available… Quote Link to comment Share on other sites More sharing options...
Outrunner Posted September 9, 2021 Share Posted September 9, 2021 Hi David. I used some XT90 anti spark connectors like these Airtek XT90 anti spark Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted September 10, 2021 Share Posted September 10, 2021 4Max XT90 anti-spark Deans Style, JST/BEC, 2mm, 3.5mm, 4mm, 6mm, 8mm gold connectors from 4-Max Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted September 10, 2021 Share Posted September 10, 2021 It's not a capacitor you need to add, but a resistor, you connect this up first to slow the inrush current into the ESC capacitors (which is what causes the spark), here's an article on making your own. I use the Jeti antispark connectors on my 6s+ systems and they have been great over the last 5+ years I have been using them. Not tried the XT-90 version but it will be similar to the Jeti system. Quote Link to comment Share on other sites More sharing options...
David Holland 2 Posted September 14, 2021 Author Share Posted September 14, 2021 Apologies for the slow response but we have had positive COVID tests in both my daughter’s families and my mind has been elsewhere for a few days. Thanks for the replies, the XT90 anti spark connectors seem the neatest solution so I’ll get some ordered. Thanks again, David Quote Link to comment Share on other sites More sharing options...
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