On 04/03/2017 12:02, NY wrote:

- Measure the charging voltage (voltmeter across the battery) when the
engine is idling and when it's revving at 2000 rpm. Certainly in the
latter case you should see around 14V - higher than the voltage without
the engine running.

Some Jap cars have a 15V alternator output. Doesn't seem to hurt the
battery and the charge rate is better. Probably blows bulbs though.

Bill