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Old 03-16-2009, 12:48 AM   #31
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Location: Johannesburg, South Africa
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Originally Posted by HCHL View Post
Could someone please shed light on why some ESC go up and smoke and some don't on reverse polarity. This is just out of my curiosity.

Recently, I connected my brand new ESC (yes a branded one) to a fully charged 6 nimh pack and it didn't smoke the ESC. The connection was on for at least 10 seconds. There weren't any sparks either when I connected it to the battery leads. I tested it on the track and it I could not feel or detect anything out of the ordinary. There was this one time also that I did a reverse polarity connection to the battery for another branded ESC, but that instance caught my attention right away because of a huge spark. It didn't smoke my ESC either.

I guess I was just lucky. I got the impression that in most cases it will toast the ESC but I guess we only see people that reported it here when there is a problem. I believe many do get lucky like me?
Pretty easy really, some ESC's have reverse voltage protection and others don't.
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