If you have a simple fixed point regulator, it always wants to be at the setpoint, which normally is somewhere between 13.8 and maybe 14.4 volts. If the battery is real low or you have a lot of loads on, the voltage might not make it up that high.
Joe Coquina C&C 35 MK I From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of David Knecht via CnC-List Sent: Thursday, July 20, 2017 11:25 AM To: CnC CnC discussion list <cnc-list@cnc-list.com> Cc: David Knecht <davidakne...@gmail.com> Subject: Re: Stus-List Voltages Shouldn’t the voltage vary depending on the state of charge of the battery? I thought that is what the internal regulator was supposed to do to prevent overcharging. Dave On Jul 20, 2017, at 11:21 AM, Della Barba, Joe via CnC-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> wrote: Battery voltage with the engine on should be 13.8 volts or higher. Joe Coquina From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of David Knecht via CnC-List Sent: Thursday, July 20, 2017 11:11 AM To: CnC CnC discussion list <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> Cc: David Knecht <davidakne...@gmail.com<mailto:davidakne...@gmail.com>> Subject: Re: Stus-List Voltages On a related note- I have been wondering how to test that my alternator is correctly regulating charging. I am presuming the test is to measure the voltage at the battery with the engine running. What should you measure for voltage for a fully charged vs. partially discharged battery? Also, related to Randy’s comments, I have recently taken to leaving my battery switch on and all the panel switches off when I leave the boat. With a 50W solar panel, the batteries are always fully charged when I get to the boat, so I can’t see any reason to touch the main switch. Thanks- Dave On Jul 20, 2017, at 10:10 AM, RANDY via CnC-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> wrote: Aries 1990 C&C 34+ New London, CT <image001.png> _______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated! Aries 1990 C&C 34+ New London, CT [cid:image001.png@01D3014E.B600A9D0]
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
