Advice on Lithium Solar setup

pianotuna wrote:
Brulaz,

All the reading I've done suggests that LI do not wish to be floated.

I've gleaned that 90% soc is going to give the best results, and that 20% is as low as you wish to go.

The question becomes does the maker "code" that into the battery management system? To me that would make the most sense.

Pianotuna example of my system not drop in batteries but still LiFePo4. CC (bulk charge) is terminated after it reaches (our) 100% SoC which happens at 3.6 volts per cell (Vpc) or 14.4 battery. This leaves ample room below actual 100% SoC so the battery is stressed less on each cycle. It's then held at CV (float) of 3.4 Vpc (13.6). This keeps the battery from cycling. **Per Elite power spec of cell the nominal is 3.2v (12.8). Stress area of the cell is max 4.0 but they recommend not to exceed 3.80V.
So even though our soc is 95% capacity of the actual bank the display has been programmed to show 100%.
With the Magnum PT controller linked to the Magnum inverter/ charger.
The following parameters are for programming the ME-ARC Version 4 advanced control.

Setup 02B LBCO Setting: Volts = 12.0
Setup 03C Battery Type: = Custom
Set Absorb Volts: = 14.2
Set Float Volts: = 13.6
Set EQ Volts: = 14.2
Set EQ Done Time: = 0.1
Setup 03D Absorb Done Time: = 0.1
Setup 03E Max Charge Rate: = 100%
Setup 03G Final Charge Stage: = Float

The BMS has no need to control the Magnum charger because the Magnum has sufficient programability to properly charge the battery. The same applies to the Magnum PV solar charge controller. It follows the inverter/charger programming. If anything happens that would cause conditions beyond programmed limits, our BMS will disconnect the charge source or loads.

I would think the drop in batteries can have basically the same programming if the charger had programmable settings seeing they have a bms to protect the battery