How do I check whether my outboard (Mercury 40hp) re-charging the battery or
not?
Thanks for the suggestions.

On Wed, 28 Apr 2004 17:10:03 GMT, "Ivan Young"
wrote:

How do I check whether my outboard (Mercury 40hp) re-charging the battery or
not?
Thanks for the suggestions.


Checking the battery volts should show a slight rise when the OB is
charging. It probably gives out just a few amps, so it won't leap
from 12.6 all the way to 13.8 volt - just up a little...

Brian W

Ivan Young wrote:

How do I check whether my outboard (Mercury 40hp) re-charging the battery or
not?
Thanks for the suggestions.


after the motor has been started, you can put an ammeter in the battery
lead, it should show current flowing INTO the battery.

do this after starting the motor, otherwise you can damage the ammeter,
or blow the fuse (if it is so equipped)

--
the most committed always win

How do I check whether my outboard (Mercury 40hp) re-charging the battery
or
not?

A DC voltmeter.

Anything above 12.6 VDC with the engine running and the battery is being
charged.

HTH


--
Lew

S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: http://home.earthlink.net/~lewhodgett for Pictures

On Wed, 28 Apr 2004 20:08:22 -0500, dazed and confuzed
wrote:

do this after starting the motor, otherwise you can damage the ammeter,
or blow the fuse (if it is so equipped)

==========================================

This is an excellent way to burn out the diodes in your charging
system if you have any.

Not recommended in my book.

Wayne.B wrote:
On Wed, 28 Apr 2004 20:08:22 -0500, dazed and confuzed
wrote:


do this after starting the motor, otherwise you can damage the ammeter,
or blow the fuse (if it is so equipped)


==========================================

This is an excellent way to burn out the diodes in your charging
system if you have any.

Not recommended in my book.

not saying you are wrong, but why do you say that?

--
the most committed always win

On Thu, 29 Apr 2004 16:34:10 -0500, dazed and confuzed
wrote:
==========================================

This is an excellent way to burn out the diodes in your charging
system if you have any.

Not recommended in my book.

not saying you are wrong, but why do you say that?
==============================================

If you open up the circuit while it is under load the voltage can (and
frequently does) rise to the point where the Peak Inverse Voltage
rating of the diodes is exceeded, and the junction permantently fails.

Wayne.B wrote:
On Thu, 29 Apr 2004 16:34:10 -0500, dazed and confuzed
wrote:

==========================================

This is an excellent way to burn out the diodes in your charging
system if you have any.

Not recommended in my book.


not saying you are wrong, but why do you say that?

==============================================

If you open up the circuit while it is under load the voltage can (and
frequently does) rise to the point where the Peak Inverse Voltage
rating of the diodes is exceeded, and the junction permantently fails.

for the few seconds required to place an ameeter in the circuit?
Perhaps. But I doubt it.

Your mileage may vary.
B

--
the most committed always win

On Sat, 01 May 2004 08:23:18 -0500, dazed and confuzed
wrote:

Wayne.B wrote:

If you open up the circuit while it is under load the voltage can (and
frequently does) rise to the point where the Peak Inverse Voltage
rating of the diodes is exceeded, and the junction permantently fails.


for the few seconds required to place an ameeter in the circuit?
Perhaps. But I doubt it.

Your mileage may vary.
B

Wayne spoke wisely - it takes about 5 microseconds maybe less of
reverse overvolts - it's not a slow thermal process

Brian W

Brian Whatcott wrote:
On Sat, 01 May 2004 08:23:18 -0500, dazed and confuzed
wrote:


Wayne.B wrote:

If you open up the circuit while it is under load the voltage can (and
frequently does) rise to the point where the Peak Inverse Voltage
rating of the diodes is exceeded, and the junction permantently fails.



for the few seconds required to place an ameeter in the circuit?
Perhaps. But I doubt it.

Your mileage may vary.
B


Wayne spoke wisely - it takes about 5 microseconds maybe less of
reverse overvolts - it's not a slow thermal process

Brian W

if you say so.

--
the most committed always win