Max Alternator Output

[eehite]

My Nippondenso 60A alternator is currently putting out 14.6-14.7V, but not fluctuating or doing anything else weird. The plane has been down for a couple of months for an avionics upgrade, and these numbers caught my eye because I was used to seeing 14.4V

Is there a good rule of thumb for max acceptable alternator output voltage before I should start troubleshooting?

Thanks!

[AltonD]

What is your battery voltage after the plane has set overnight?

[Tbone]

Generally the alt would charge at a higher voltage if the battery was in a discharged state (due to a long hiatus). Top off the charge and it should settle down to normal.....

[MarkW]

Odyssey batteries would like to see their batteries charged at 14.7v.
Mine has been charging 14.6-14,7v since new.
I think the Odyssey will last longer being properly charged like this.

[RVDan]

14.5 to 14.7 is pretty common for the Pb VSLA type batteries. I use 14.8 as my yellow line and 15.0 as redline. If you follow the flooded cell battery recommendations they are a bit lower- around 14.2 to 14.5 depending on temperature.

[eehite]

It's a 12V Concorde battery, but I can't remember the part number off the top of my nugget. I'll check this evening and update this post.

The plane has been mostly idle for a couple of months, with the battery sitting on the Concorde-recommended BatteryMINDer trickle charger.