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Damage to the alternatoron both vehicles can occur and permanent damage to the batterries also can occur. Always be sure of +positive to +positive and -negative to -negative if unsure do not attempt to jump vehical it can be a costly mistake.

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Q: What damage can be done when hooking up the battery cables backwards?
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Will hooking battery charger up backwards on boat battery damage anything?

Connecting a battery charger backwards to a battery will likely kill the battery, depending on how long the power is attached.


What can happen when you put your battery cables on backwards on a 2001 Chrysler pt cruiser?

Blown fuses, melted wiring, computer damage,


What damage could you have done when you put the jumper cables on the battery backwards?

Damage to the alternatoron both can occur and permanent damage to the batterries also can occur. Always be sure of +positive to +positive and -negative to -negative if unsure do not attempt to jump vehical it can be a costly mistake It can "fry" the alternator, the computers, wiring, fuses, and the battery.


Battery cables wrong?

There is the possibility the battery could blowup. You can damage the complete electrical system.


How can you tell what damage was done by putting in car battery backwards?

Car battery charges can check the damage done to the actual battery but to the entire car is another story


Will a car battery charger ruin my battery if I accidentally reverse the cables while charging?

Yes it will damage your battery if you reverse the cables. There is an article on Wikipedia about it at this link http://en.wikipedia.org/wiki/Rechargeable_battery.


What happens when you put your car battery in backwards?

When you connect the battery backwards you can cause major damage. You can blow the alternator or its fusible link. You can destroy electronics, particularly the various computers - and these are not cheap.


Will your car start if you hook up the battery cables in reverse?

No, and you may do major damage to the computers.


Can you start a car if battery cables are on the wrong post?

no- if you connect a battery the wring way round you will short the battery on a modern car you may damage the ECU


What will happen if you hook up a battery charger backwards to a boat battery?

It depends on the battery charger. Some chargers will detect that they're hooked up backwards and do nothing. More than likely though it will dis-charge the battery pretty quickly, and probably damage it.


Can any damage be done to the cars system when replacing a car battery?

no as long as you don't put the cables on wrong


I just changed the battery in my car and put the battery cables on backwards now the battery won't charge I tried a different battery and still wont work. Could I have damaged the alternator?

when you reverse connect a battery there is a good chance you will blow the main fuse this will protect the car from more damage but usually stops the battery for been charged as well... check and change the main fuse or fuseable link The alternator probably already was bad before you put the battery in.