I'm reconditioning my hybrid battery. To do so requires multiple complete discharges which I do not have time to be around for. To avoid damaging my battery I've been attampting to design a circuit that would step down load as the voltage of the battery drops and totally secure the voltage once the end point is reached. Starting voltage ~240 +/- 5 Vdc
I would like ~200-300W draw at 2-4amps till 190V
~100W till 170V
~50W till 168V
~25W till shut off Voltage.
Would it then be possible to have a selector for the shut off voltage of 17V/85V/134V depending so as to successively discharge deeper over multiple runs?
If not I'd like a shut off V of 85V.