Simple LED - Darlington BMS

I'm now charging 3 cells in series. It still takes about 5 hours with my little 3A supply. I think I'm going to bring out the PFC-30. I wrote up my design including the voltage-current transfer function and plots of charging cells with the clampers installed.

Don't use my delicate construction technique in a moving vehicle. I'm just using it to charge my cells on the bench.