I never saw this before

John B.

Well-known Member
My wife has one of those Swifter Dusters for cleaning vinyl floors. It sprays a little solution out each time you you press the button on the handle. She replaced the 4 "AA" batteries in it and it didn't work. I took it apart and checked the little 6 volt pump motor with a power supply and it ran just fine. I checked the output of each battery independently and found one of them had reverse polarity. I never saw this before. I replaced that one battery and her duster works just fine. We have a happy home tonight...

Just because batteries are new out of the package don't mean they're good!!
 

Where the batteries from the land of almost right! That's a new one, something to remember. Once on the farm someone hooked up a charger to a dead battery backwards, and reversed the polarity on it.
 
I had two LED red marker lights given to me and I put them on the golf cart for tail lights.(they were dug out of the trash as obsolete lights) One would not work,it turned out the one had a black wire as a ground, and the other had a white for a ground.
 
Yes, have seen alkaline cells change polarity. Had one just the other day. Right now, not remembering what it was in. Had 4 cells, 2 tested OK. one was weak, other was completely reversed. They were installed properly. Now I remember. Was in a scientific calculator and it was operating fine prior to failure. Put a new set in. Donno what happened.
 


(Just because batteries are new out of the package don't mean they're good!)

That goes for just about every product!
 
(quoted from post at 23:17:27 06/23/17) Be careful with a Swifter Duster if you have children or pets
eah, no cleaning device can clean up the crap the children & pets can do! :evil:
 
I found a AA alkaline with reverse polarity and nearly 2 volts. It had been installed in a trail camera backwards. Camera would not work. Not mine.
 

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