jrnymn7 wrote:
Grizzzman brought up the issue of monitoring Ah's. I see no benefit to having an MPPT controller with an Ah counter. It would only work when charging with solar. It would not keep track of Ah's replaced when gen charging, but the Trimetric (or any similar meter) would keep track of all Ah's in and out.
As for keeping track of a Lithium bank, yes one could stay within say a 30-90% soc range, and avoid any high or low voltage events. But I would still be inclined to keep an eye on voltages, in case the Ah count was off, and required re-calibrating.
Well for me controller adjustibility is a big deal.One of The reasons i want amp hour counting is the ability to to use ending amps as a form of charging control. As an example midnightsolar has "kid MPPT CONTROLLER" when used with there wizbangjr turns the unit into a amp counter. This is why i asked if the the unit you were discussing had this capibility.
As for LFP my thoughts are using amp counting, ending amps, and absorb time out as ways to control day to day charging and volts as the upper limit cut off and using cell level HVC and LVC as catastrophic (to cover old timers) moments. In my thinking setting levels of control will make LFP less of a risk from charging failure.
