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Need idea to protect car gadgets from voltage spikes.

S

Sam Nickaby

Jan 1, 1970
0
I've heard of stories that the surges from the touching of the battery cables
together can destroy sensitive electronics. It's common to see people
run a motor and fumble with the jumper cables at the same time. This is
an accident waiting to happen. What is the best way to protect car
electronics such as the car's computer or the auto alarms from voltage
spikes from the accidental shorting of the battery jumper cables
without using a fuse?

Thanks
 
J

John S.

Jan 1, 1970
0
Sam said:
I've heard of stories that the surges from the touching of the battery cables
together can destroy sensitive electronics. It's common to see people
run a motor and fumble with the jumper cables at the same time. This is
an accident waiting to happen. What is the best way to protect car
electronics such as the car's computer or the auto alarms from voltage
spikes from the accidental shorting of the battery jumper cables
without using a fuse?

Thanks

The best way to avoid that problem is to follow the usually detailed
instructions in the owners manual. The manual for both of my cars has
detailed information about how to jumper a battery, how to connect and
disconnect battery terminals, etc.
 
R

Rich Grise

Jan 1, 1970
0
I've heard of stories that the surges from the touching of the battery
cables together can destroy sensitive electronics. It's common to see
people run a motor and fumble with the jumper cables at the same time.
This is an accident waiting to happen. What is the best way to protect
car electronics such as the car's computer or the auto alarms from voltage
spikes from the accidental shorting of the battery jumper cables without
using a fuse?

Follow the car manufacturer's procedure for jump starting. Typically, you
separate the cables - clamp the red positive to positive, and start the
helper car motor, then clamp the black one to the negative battery post
of the helper car, and clamp it to some piece of metal that's connected
to the car chassis, like where the negative cable on the dead car bolts to
the engine block; then rev the helper car for a while, to put _some_
charge on the dead one, and it should start right up. Then, remove the
cables in the reverse order that you hooked them up.

Do _NOT_ try this without an actual battery in the car, however. That
_will_ give you destructive surges as soon as you take the battery out of
the circuit.

Good Luck!
Rich
 
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