Three questions

My understanding is the pack charge controller will try and maintain the battery voltage around 168v (~ 1.4v/cell), charging no higher than 186v (so, to see 190v would be a Bad Thing from the charge controller), and will ideally not allow the pack voltage to dip below 144v. Are these assumptions correct?

Second: When in full assist, my understanding is the pack is allowed to pull about 90A. I do not have any idea how many amps it tries to push into the pack to charge it -- can anybody shed more light on that?

Third: does the pack charge controller use the voltage from the main terminals directly, the terminals going to the DC-DC converter, or the multi-tap plug when determining pack voltage?

 

(1) Not sure about the 168V, but that seems high. 192V peak charge voltage
(2) 50A peak charge/100A discharge
(3) Both for different things, but primarily the taps.

 

144v still the lower-bound on voltage? Does the DC-DC care what its voltage is, as long as it's > 144v?

Is there a breakdown of what voltage sources are used for what features?

 

144V is just the nominal. Under 100A load, it can dip darn close to 120V momentarily. Resting will ALWAYS be above 144V as 144V RESTING voltage is empty.

I don't know the specifics. It's a delicate dance of voltage, current, temperature and state of charge influencing power limits and SoC computation. Tap deviation is the primary cause of a recalibration and overrides pack voltage limits. - that's how most of it works. Pack voltage for coarse response overridden by tap voltage/temperature/current limits.