Question Questions Regarding Upgrading to Lithium

[Nomadist]

we all have our ways. I do have A/C and plug it in to shore power when needed, however a generator is used for this more than the grid. I guess what I am saying is I have my cake and eat it too because I can have both systems working at one time. The cycle life of Lithium is roughly 4000 cycles. a cycle is calculated in a calculated full discharge. Keep that calculated in mind as there is no suggestion full discharge is in anyway acceptable.

I fully accept the 10 year life of the inverter, the expected 10 year life of the solar AGM batteries, and have extra MPPT controllers. The converter I use to maintain the 12v house battery via the inverter was new in 1983' I have spare parts for the inverter( after all I built it), but don't believe I will need them. My inverter board is 3000w but the transformer is 1500w 100% duty cycle, capable of 3000w intermittent. I too am concerned about long term life of system.

My suggestion is think outside the box. I spend my insanity that way?, but don't expect others to see it my way.

Don't get me wrong: I do appreciate you raising this model to me because it had me think through things. I'm learning a lot through this process.

Regarding the battery life, the way it was explained to me is that the flow of electricity through the battery is what diminishes working life. We tend to think if it as cycles because that's how we use batteries but an additional way of measuring it would be, "how many amps have gone through the chemistry?" Additional diminishment occurs with every deep discharge, of course, as you point out.

But it wouldn't work nearly as well if we rated batteries as "10,000 total aH." People would immediately ask, "How many charge/discharge cycles does that work out to?" And cycle count includes the extra diminishment due to deep discharges.

And you are plugging the AC directly into shore power so even your model allows for that.

 

[Kevin D Pem]

a couple of questions:
if the voltage never goes down to chemistry storage voltage then what actually goes through the battery?

Where are you getting your data? (Website or???) will you share?