Initial testing went well. New batteries tested at 12.4 volts and everything looked great.
This morning, around 6:30 AM Hooked up 110 and checked the charge voltage. Reading 13.7. OK, probably topping things off, I;m thinking.
Away from the Solera all day with it plugged in.
Wife reports that around 10 AM she heard the CO alarm sound. she went to check on it and it stopped sounding after a couple of minutes, It did not alarm again as far as she knows.
Got home around 4PM, hear the story and checked.
Voltage still 13.7 (still in charge mode?).
Removed fill caps from one of the batteries. Instant CO alarm.
silenced the alarm, checked voltage at the battery still 13.7. while plugged into shore power. Disconnected shore power and ran the slide out and turned on a few lights and it reads 12.8-12.9, indicating a full charge.
Long story - short question. Is it normal to get a co alarm (from the hydrogen gas) when charging the battery from shore power? I have never had that happen before.
2011 Solera 235S