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Old 03-05-2008, 05:18 PM   #1
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Default lipo with broken soder joint

anybody ever break a soder joint on a lipo (peak racing 4800 7.4) before?

i can reattach the 4th cell on the bottom to make it work but my soder joint will not hold. so now i have a 140.00 smoked paper weight???????

any thoughts?????
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Old 03-05-2008, 05:23 PM   #2
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I'm guessing you plugged something in backwards at some point? The tab on the Kokam cells acts as a fuse, and will break if you reverse the polarity. Soldering it back isn't impossible, but isn't exactly easy since it's aluminum. Soldering with aluminum sucks. Call Orion and see what they'll do for you.
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Old 03-05-2008, 06:25 PM   #3
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well i also fried a 13.5 brusless motor that was less then a 2 months old!

what a great race.....

do you have the number for kokam-orion or peak racing?...or anybody for that matter

i really dont have any trust in that cell now
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Old 03-05-2008, 06:26 PM   #4
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and no, nothing was ever plugged in backwards
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Old 03-05-2008, 08:25 PM   #5
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I had the same thing happen to an Orion 3200 and is was caused by plugging the wires in backwards. It only took a milli-second for the fuse to blow but that's what they are intended to do. I contacted Orion (look up on their web site) and fessed up my mistake. They offered me a new battery at cost which was fair. I chalked it up to experience. I have since painted bright red circles around the positive battery plugs on all of my lipos and have never repeated that mistake. My advise is not to try to solder the aluminum fuse. Your safety and your house is not worth trying to save a ruined $140 battery.

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Old 03-06-2008, 05:10 AM   #6
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i would love to chalk it up to being in backwards if that is what i did... but it wasnt. i was in my 2nd qualifier, i proboly ended up over heating my motor (blew my rear diff) and then all of a sudden just lost power, my speed controller(lrp sphere) was smokin hot, motor was smoking and so was my lipo.

now on the flip side i broke my diff in the first qualifier and finished the race without any of these problems...

now i did reverse polarity on the same battery once i got home after i soldered that connection on, but my charger caught that dumb mistake but again i never had it backwards when it happened...errrr
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Old 03-06-2008, 06:02 AM   #7
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Starting to sound like you have at the least some electrical issues, could be motor, could be ESC, could be gearing....The batt was probably trying to protect itself, there only rated at 15c on the 4800. Brushless motors do get hot, but anything over 150F is getting a bit much.
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Old 03-06-2008, 06:23 AM   #8
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the only thing i can think of is that the esc tried powering the motor that locked up and "burnt the connection" it even "desodered" or broke my positive cable connection above the bullet connector. i just didnt know weather it was the battery that spiked it all from a hard hit, esc that did not "thermal" when it was supposed to, or the motor thet caused my expensive race day blues.
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Old 03-06-2008, 08:41 AM   #9
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There was one guy at my local track that actually broke one of the solder joints on an orion 3200, just send it back to orion and if it's a broken joint they'll fix/replace it and if it was a blown fuse they will probablly give you a good deal on replacing it.
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Old 03-06-2008, 10:13 AM   #10
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DOES ANYBODY HAVE ANY INFO TO GET A HOLD OF ORION??????
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Old 03-06-2008, 10:57 AM   #11
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Quote:
Originally Posted by GSPOT View Post
DOES ANYBODY HAVE ANY INFO TO GET A HOLD OF ORION??????
Uhhh...you don't have to get snippy. Orion is owned by Kyosho now, so just call Kyosho or check their website (kyoshoamerica.com).

I've repaired them a few times. Just be careful not to short the tabs with the iron. Soldering them isn't any more dangerous than soldering a NiMh cell, it's just more tedious because of the way the little board is laid out. Use a hot iron and use something to hold the tab down while the solder cools...and don't add any.
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Old 03-06-2008, 11:18 AM   #12
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sorry about the caps....(my programs here at work only use caps)
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Old 03-06-2008, 11:31 AM   #13
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kyosho does own orion now. they told me to send it in to them to see how they could help out!!!

i couldnt ask for anything more...lol

thanks everybody!
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