Champ
Well Known Member
I have a Plane Power AL 12-EI60/V alternator and a 4 year old rear mounted PC680 battery with 200 hrs on it.
Static charge on the battery is 12.8v on its terminals and 12.4v on the buss - both on my Dynon EMS D10 and a multimeter.
In flight buss voltage has gone from 14.3v to 14.8v avg with a saw tooth pattern varying between 14.4v & 15v and a couple spikes to 15.1v. All with constant load. Buss amperage varies as well between -6.6a & +10.5a.
Note: volt/rpm/amp data graph. Dip at 18 min was when I briefly took the alternator off line - here voltage dropped to 11.5v & amperage to -25a.
Amperage variation is very strange with load being constant. Terminals on the shunt are tight.
Should I be saving up for a new alternator or battery or both or is there something else going on?
I've got a ticket in a Savvy looking for their input as well.
Static charge on the battery is 12.8v on its terminals and 12.4v on the buss - both on my Dynon EMS D10 and a multimeter.
In flight buss voltage has gone from 14.3v to 14.8v avg with a saw tooth pattern varying between 14.4v & 15v and a couple spikes to 15.1v. All with constant load. Buss amperage varies as well between -6.6a & +10.5a.
Note: volt/rpm/amp data graph. Dip at 18 min was when I briefly took the alternator off line - here voltage dropped to 11.5v & amperage to -25a.
Amperage variation is very strange with load being constant. Terminals on the shunt are tight.
Should I be saving up for a new alternator or battery or both or is there something else going on?
I've got a ticket in a Savvy looking for their input as well.