405driver wrote:Source of the post Thanks....
When I took my 1997 Charles (50A) to "Inverter" for testing, they explained exactly what you said above. The charger tested ok but I decided to replace it with a Promarine because I liked some of the features on the charger. Specifically that after a given period of time and completely charged batteries, it shuts off.
Thanks for the tip. I know that my CO detector is older than 5 years so it's time for a replacement. I use a battery operated version and I know that it still worked last season but time for a new one.