Switch to LIFePO4?
I have a trio of Rolls Surrette FS210 wet cell batteries that give me about 315 AH of usable capacity. My big concern is weight, the total is 400 lbs in my from compartment of the 5er, and I think tha...
Forum Discussion
It was a several years ago that came up about the false amps reading with whatever brand inverter/ charger it was, but it has come up a few times since with the added info about the low voltage input making all that worse. ISTR he saw 100a on the display but was really getting 80. It was not reading actual amps, but doing some calculation that was bogus as designed. The remote display had it correct. Something like that.
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It does look like there is something in all this for the Trimetric and Victron owners to consider when going Li.
I don't think it would change how I do things with my Trimetric, because I have always hated the way they do "full" and % SOC, so I don't use that. I never did set P1, 2, or 3. I did have to disable the auto reset of the AH counter.
I keep track of approx. SOC by comparing the AH count wrt to my notion of what the bank capacity is at the temperature prevailing and the voltage when there little load. My AGMs lose 15% capacity at near freezing compared with 77F/25C ambient. Wets similar. Don't know Li for that.
I use the Trimetric's ammeter to see when the AGMs are at 0.5a/100AH. I also like to compare the solar amps with the amps to the battery on the Tri, which tells me how much the solar is doing for loads.
Whatever, IMO with an Li bank and a Trimetric, I would do what I do now and never mind setting any P1, 2, or 3 and just use it as a voltmeter, ammeter, and AH counter, doing your own resetting of the AH counter as required. YMMV (probably will! :) )
Let the Li battery SOC meter do that, and use the Tri for the other things.
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It does look like there is something in all this for the Trimetric and Victron owners to consider when going Li.
I don't think it would change how I do things with my Trimetric, because I have always hated the way they do "full" and % SOC, so I don't use that. I never did set P1, 2, or 3. I did have to disable the auto reset of the AH counter.
I keep track of approx. SOC by comparing the AH count wrt to my notion of what the bank capacity is at the temperature prevailing and the voltage when there little load. My AGMs lose 15% capacity at near freezing compared with 77F/25C ambient. Wets similar. Don't know Li for that.
I use the Trimetric's ammeter to see when the AGMs are at 0.5a/100AH. I also like to compare the solar amps with the amps to the battery on the Tri, which tells me how much the solar is doing for loads.
Whatever, IMO with an Li bank and a Trimetric, I would do what I do now and never mind setting any P1, 2, or 3 and just use it as a voltmeter, ammeter, and AH counter, doing your own resetting of the AH counter as required. YMMV (probably will! :) )
Let the Li battery SOC meter do that, and use the Tri for the other things.
