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Question:

if you have a car battery charger?

And I tap both the terminals together and it doesn't spark does that mean the battery charger is no good

Answer:

not necessarily,but try and connect them to the battery and twist them and see if the needle on the charger moves if so it is working,but I have always seen a spark when I tapped them together,and imost of the time if it doesn't the fuse is more than likely blown in it.,,,,,,
could mean a blown fuse
Maybe not--some of them have a circuit breaker internally, and that goes off when you touch the terminals together. Best way to tell is just use a simple cheap voltmeter. you can buy them at Kragen for practically nothing, and it's a very handy tool to have. (volt/ohm meter).
I read that as car baby charger And I was about to say, oh my god, where can I buy one of those And then I realized it said battery charger, so I cried a little. Also make sure you connect the proper ends of the bab- I mean battery to the battery charger
Yes, if it was a working charger, you should see some sparks when you scratch the terminals together. It should have a gage which would show the charger delivering max amperage when you scratch the terminals too. Astrobuf

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