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