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Smoked a new power supply. Common?

Greybeard

New Member
Joined
Dec 30, 2019
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89
I picked up one of those cheap 30v 10a power supplies. I see them under many names but this one says tuffiom.
Is it common to get these unit bad out of the box? I smoked mine immediately and I don't think it was me.
I had it at 110v input. Plugged it in, set it to 3.6v to charge my 280ah cells. I cliped the leads to opoait ends.. no I didn't revers polarity. I noticed the wires start to get hot immediatly, looked down and it said 6ampa but the volt meter was blank and then the old POP and smoke...
 
Sounds like a defective unit. Remember, the customer is the "made in China" quality control department.
 
Sounds like a defective unit. Remember, the customer is the "made in China" quality control department.
?? I know right. Fortunately I didn't get this one from alibaba I ordered it from Amazon. They're pretty good about making sure the seller does right
 
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