Airing some Dirty Laundry

[BrianG]

Yeah, that 109's "pulse charging" during the CV phase is questionable to me too. I'm sure it works, but sounds more like the engineers took their NiMH algorithm and made a quick-and-dirty alteration to charge lipos without bothering to integrate a true CC/CV charge profile. Really, all they needed to do is use their CC scheme, and when the cells reaches 4.2v, have the processor closely monitor the voltage and adjust the current accordingly. Still technically a CC charge, but adapted to look like a CV charge.