I experienced battery dropping 12.4 then on down, form a bad /interemittant relay. Once fixed, and also replaced the aux lights with aftermarket, and a new battery, things have been great for the next 5000 miles. The voltmeter reads 14.4 or 14.3 with just low beam on, 14.1/14.2 with my Gerbing e jacket on, and 13.8 with high beams, aux LED lights gerbing and electric grips cranking.