Edd, very normal.
The 13.3 V is the charging voltage. 12.8 V (more like 12.7 V) is the fully charged resting voltage (with no voltage provided by the solar panel). If you had a display, you could check how many Ah (not amps; ampere-hours) you put into your batteries. But the 12.7 - 12.8 V resting voltage is very good. Marek C270 “Legato” Ottawa, ON From: CnC-List [mailto:[email protected]] On Behalf Of Edd Schillay via CnC-List Sent: Monday, August 29, 2016 15:22 To: C&C List <[email protected]> Cc: Edd Schillay <[email protected]> Subject: Stus-List Solar Charging -- Normal? Listers, I installed a new 40W panel on the Enterprise last week connected through a Gensun charge controller (as recommended by the list.) When I got on board this weekend on a very sunny day, I found the batteries at 13.3 volts. Towards the end of the day, with the sun still out, they dropped to 12.8. I don’t know if it was due to less sun or the controller kicking in. Since I don’t have Fred’s knowledge (also known as Street-Smarts), does this all sound to be normal? Will I see charging days of over 13 volts? Concerned about the battery status, I checked the batteries and the water level in all of them were just fine. Do I have any reason to worry or is this what solar power was meant to be and I’ve just been missing out for all this time? I have to say — if it’s normal, I’m loving it. All the best, Edd Edd M. Schillay Starship Enterprise C&C 37+ | Sail No: NCC-1701-B City Island, NY <http://enterpriseb.blogspot.com/> Starship Enterprise's Captain's Log
_______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated!
