My problem is that I have not seen VA rising (not enough measuring perhaps) during the Bulk stage. Constant 75 amps while SOC rises from 50 to say 73%. Battery voltage rises all during that time.
So I would be looking at VA vs battery voltage in the Bulk stage. I did see on the Kill-A-Watt how the VA components change. Lower 120v voltage and higher 120v amps to it over time. I want to see what that was all about too vs rising battery voltage over a longer time.
why would VA rise, VA is max at empty battery max charge
VA = power
power needed drops as battery SOC rises and the battery accepts less amps
there is NO linear correlation between amps dropping and battery voltage rising
power needed is NOT constant, power needed does not rise, it goes down
VA needed will always be less as the battery charges
the PF will change and efficiency will change
efficiency of power use goes DOWN as the battery SOC rises, but total VA/watts used also goes down just not at a linear rate
IF your looking for a magic number on the KAW that will tell you your batteries are at a certain SOC
Not going to happen
battery use is in a constant state of flux, using anything except one or two little LED lights,
PC, tv, device charging, all have switching power supplies, inverter use to power them, MW and coffee pot, 'Mr Perkuet" etc..
charging is a constantly tapering amps vrs rising voltage, vrs battery SOC and ambient temp which affects the chemical reaction of the both the recharge and discharge
