It seems that the Voltage regulator has been a issue with the bikes since the 2012 models came out, there was a recall on the 2012 models for voltage regulator problems.
A simple test to see if the stator went bad is to open the derby cover and if you smell burnt wires then the stator is shot.
Since the charging system output can vary some the 14.4 isn't written in stone, the stator (alternator) puts out 16 - 23 Volts AC and the Voltage regulator 14.3 to 14.7 volts @ 3600 rpm.
On my 08 I only get 14.1 volts but it still has the original voltage regulator which is getting a little tired, the stator was replaced twice and I just put in a new stator 2000 miles ago.
I use HD parts and they work just fine IMO.
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08 FLTR candy red sunglo,with 2015 103 HO, V&H Dresser Duals with Monster Rounds, Power Vision tuner, Willy Shiny Wheels and Forks and a bunch of other stuff.