BFL13 wrote:
I do not understand how you got the bank to accept 80 amps at 94% SOC.
I intentionally looked at only the first few minutes of charge. It was clearly dropping off as I watched and wouldn't have held for long at that rate. There were two things I wanted to know.
1) Was there a difference in the current/rate of charge between the generator and shore power. (None I could see)
2) With a voltage above about 14 volts, could the PD charger/converter provide 80 amps on both AC sources. (Yes.)
This was not a steady state test where it had reached 94% charge from a lower voltage, so you can't compare to any tests others have done.
There are lots of uncontrolled factors. Some are related to the converter design - the converter may have components that heat up and limit charge rate. Some are related to the battery - I was looking at the first few minutes of charging. I was interested only in the basic limits of the system. If there are converter limits, I may need to work around them. If there are battery limits, those should apply to all converters.
I wasn't trying to say that the PD can supply 80 amps steady at that high SOC continuously, and I don't expect to see that when I do real testing. (The only load was the battery however.) For that matter, the 94% number was a guesstimate based upon my recollection of numbers that had disappeared. It could have been lower.
I did some inverter testing at one point, and the TriMetric reset on me to 100% charged without any charging input. (I didn't run the gen or alternator and I have no solar) when I overloaded the inverter and it went into safety shutdown. I believe the voltage pulled down under a 100+ amp load, then when the inverter shut off, the voltage popped up above the "charged" limit causing the TriMetric to think it was fully charged. I didn't have the "time within limits" trigger option set to prevent that.
This is more like a single datapoint at the start of a charge test than a point in the middle.
Edit: Also note that the batteries are new, so the capacity is lower than after they've broken in. The true SOC was unknown.