Howdy all,
Here comes a comment from one who is currently running on an 8 volt battery, bought before I read all the better advice here. The generator did not charge the battery before I tweaked the regulator. After doing that, it has been performing fine for 2 years. The voltage regulator is set at about 9.3 volts. In those 2 years I have had to change one headlight, which was over 25 years old. Also, here in Sweden the law says I must drive with the headlights always on, so they are getting plenty of use. I think the concerns about bulbs not tolerating the higher voltage are exagerated.
That said, my next battery will be 6 volt.
Karl


It may not be the easy way, but it is the Cowboy Way - Ranger Doug
Beware of the stories you read or tell; subtly, at night, beneath the waters of consciousness, they are altering your world. - Ben Okri
1953 Chevy 3100
1960 Volvo PV 544
1941 Chevrolet Special Deluxe