Am I Screwed - Up or What?

[bobbill]

I must ask.

Okay, I bought a small Wallen pack and came with a 3a charger, tried to build a "no solder, "A" connect the cubes thing and it did not work.
The Andersons that came with the Wallen deal would not connect, so replaced with an XT60 and ran charger, seemed all fine.
Decided to go to bed and disconnected charger completely to be safe, as I have read not to let charge without watching.

This morning I tried to reconnect charger and got a spark and the negative side of both xt connectors was blackened. Scared the you know what out of me.

I have a larger (blue) Luna-sold charger that says to plug in the charger to AC first, then hook up. So tried that...another spark. More pooh.

Well, both events scared the hell out of me, so here I am...asking what I did wrong...all the connections (red/black to red black) + to +) are fine. I did not short out the connections.

What do I do now...I am so dim and this stuff scares me cuz am so electrically ignorant.

I did a search and responses are all over the place, so here I am...again. I live in MN and "Cold" is coming.

I must have screwed up things somehow but so simple I do not see how...any help out there?

Am thinking the pack was sent by Wallen charged...too.

Be nice to have set procedure, too. Thanks for your time.

 

[Matador]

A small spark can be normal (but it's not normal if you start a fire hasard). The chargers can have huge capacitors inside them. If you battery voltage is much lower than charger's voltage, the charger will momentarly dump a very high current from it's charged capacitor into the battery, creating a spark the mement you connect it. On the other hand, if your charger is not plugged to the wall mains, the battery voltage is higher than that of the unplugged charger. The battery would then momentarly dump huge current surge into the unplugged charger's capacitor, creating a spark.

Small spark is normal.

 

[Matador]

There are some antispark XT connector available on the maket too. If you want yo prolong connc ector life and avoid spark blackening, it's a good solution.

https://youtu.be/7PwdlPOl1zg

 

[bobbill]

Yes, sathnw that after...and thanks...

Does that mean spark is nothing...capacitor sink?
Which means the spark is nothing...and I should replace the XT60s to remove the pitted connections? Or, maybe just keep using?

 

[bobbill]

Matador, Thanks, makes sense to me...

Can I just proceed and not worry...as I said, the stuff is scary.

 

[Matador]

I know. And the sparks are even worst in higher voltage systems. A higher voltage spaks can travel longer distances in the air too.

I would keep using. Sparks like that are benign, it's just that these bitches tend to add were on the connector and in the end, you need to replace the connector.

Matador

 

[bobbill]

Am learning. Matador, muchas gracias...am relieved! If you knew... will do. Thanks again.

 

[bobbill]

Matador, Just finished watching the XT90 video...max thanks, very good, might be good for me to get small vice like that.

 

[Matador]

Glad it helped!
Matador