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How does a car battery polarity change into reverse polarity?
Car battery polarity can only reverse if the battery is completely dead and then charged with the neg. and pos. leads of the charger are reversed. This is very dangerous as hydrogen gas which is given of buy a dead battery may explode and cause personal inguiry.Likewise if the car's battery cables are accidently reversed while the battery is dead. Regards - S.S.
Why would the negative ground drain the battery when car is off?
Because if you reversed the polarity at the battery it would blow the fuse through which current flows to the drain.
If you cross the battery cables on a 1998 ford escort what will happen?
That all depends on whether or not you turned the key on with the battery t erminals reversed. I did this once and nothing happened except that the ammeter showed a disharge while it was actually charging. I think you have changed the polarity on components of your vehicle. I'd put them back on right and see if it will start and see if everything works all right. If you had the cables reversed while trying to jump start a car it will Fry everything.
What will happen if terminals of the battery are reversed?
If terminals of the battery are reversed, it will short the device that is using the battery. On a car reversing the cables can blow fuses, melt wires, and fry computers.
Will a fiesta car battery work in a metro?
Yes, as long as you hook the polarity right
Reversed polarity on your car now your car wont start with new battery?
There are quite a number of diodes and transistors in the critical circuits of your vehicle. Any one of them can be destroyed by applying high current reverse polarity. You'll need to go through every individual circuit and check for damage. Start with fusable links and other fuses, then find out what it takes to engage the starter. Once you've got that far, start checking the ignition circuits, make sure you have good spark to the plugs, and finally, check the injection system. Most automotive computers have built in protection against reverse polarity, however... Good luck. It's a simple mistake but it can be quite expensive.
Why is battery not charging light on on your 1998 Cadillac STS when you are reading 13.9 volts across the battery?
Some lights have polarity (e.g., LEDs). Cables could be reversed. Of course bulb could be blown. AND of course, if some type of light doesent come on, such as the check engine light, then you have a bad car :)
Reconnected the battery and the car still not start?
Gas in the tank? Voltage Regulator output is: ? Was the proper polarity observed when reconnecting the battery ... red to positive, black to negative. Bad starter motor - Any spark at the plugs?
What are the top causes of exploding car batteries?
Hooking the battery cables up incorrectly. Reversing the polarity can cause the battery to explode.
What happens when you charge a car battery on the wrong polarity?
You can't recharge it hooked up in reverse. You will destroy the battery or the charger if you try it.
What happens when you put a radio to a battery?
you can hook a car radio directly to a car battery or even a car battery charger with out problems, I have done it myself, the only thing to remember is that it needs to have 12 volts and the polarity (+ -) needs to be correct.
Can loose wires cause a car battery not to start?
Certainly, a loose wire on the car battery can cause the car not to start.
