Andydenn

disconnected it for the readings

The victron gauge we have shows both starter and leisure voltage. I can see the starter voltage drop quite a bit when engine starting The high output voltage on the 175amp alternator was measured with a multi meter. We don't have any sort of external regulator/battery charger on the alternator. One thing I do remember is that the batteries were actually changed from open lead to sealed lead. Is it possible the previous owner has switched battery types and not adjusted the alternator? Does the alternator need adjusting when changing battery types?

Hi I'm looking for some advice, if anyone could help I have a 5yr old NB with a beta marine 43 with the standard 175amp alternator. I switched the engine on and the voltage at the batteries was indicating 14.95v which was correct from using the multi meter. I thought that perhaps the alternator wasn't regulated properly so gave it to my partner to take to work where a new regulator was fitted. The output is now 15.2v!! The batteries were fully charged at the time. I have 5x 110amp domestic sealed lead acid batteries. With one battery at the bow for the bowthruster but still connected to the others. I have load tested the batteries and all passed the test. My question is... can the alternator be regulated down to output 14.4v? And subsequently reduced its voltage as the batteries are nearing full SOC. Or do you think there is a fault in the system somewhere? Apologies if I have missed any important information Thanks