KD4UPL wrote:
You say you checked the charge level using your charger? How does that work? Have you checked the battery's resting voltage? If it's 12.6 or 12.7 it should be fine.
In my opinion Optima batteries are overpriced for what they are. I've installed hundreds of Deka batteries over the years along with lots of Rolls and Lifeline. I've had very good results form all of them.
You have just one battery but use it to power an inverter running a coffee maker? That is very hard on that battery. If you have a 1,200 watt coffee maker I would think you would want at least 600 AH of battery hooked to the inverter.
My battery charger has a gauge that indicates the battery strength when connected. It has a 12 volt deep cycle setting to charge the RV battery. When fully charged it indicates the amount of charge ( I can't remember exactly what the numbers are). It is probably not real accurate but enough to let you know that when you hook up the battery the amount of charge in it.
When I say making coffee we make two cups on a Kurig and that's it. We have only done this twice with this battery. I can turn the inverter off so it is not running all of the time just when I need it.
You say that you have installed hundreds of batteries over the years. Are you in the business? If so what battery and size would you go with and why?