Battery charging

[Sandun]

Dynamo / Battery - of Mm 1000 -
my battery voltage was 12.38 v - then I went a trip on my car ,after 2 km, I look Ammeter came " 0 " then I stop the car - check the battery voltage now it was 12.5 - can you tell me, is my voltage regulator setting fine ?

[bmcecosse]

Sounds like it's not charging - does the ammeter ever show a + reading? Is the red light going out? First check - is the fan belt tight?

[Sandun]

when ignition switch on the ignition warning bulb is light - then start the car the light not off but wen I go the light off - when I start to going , Ammeter read 30+ more..... after 1.5Km runing Ammeter come to "0" I think the fan belt is tight normal - have some problem ?

[bmcecosse]

Well - that indicates to me that something is draining your battery when your are not running - then the dynamo has to work hard to charge it up - and then it settles to 0 when the battery is fully charged. the voltage then should be something like 13 volts..... But your voltmeter may not be accurate. As long as the car starts - and the ammeter still shows + or at least 0 when the headlights are on - I think it will be fine.