what does the alternator have to do with the price of batteries?
I am in the halogen bulb group,great light projection,good focus with no glare that blinds.
I don’t worry about the generator at 14 amps can’t count a bearing failure after 50 years against the high output,have long battery life 10 years so far on this one,16 out of last one.
30 years on the halogen bulbs.If i go on a long drive I turn on the headlights