Adding to the list of required items for the PD to be in constant current is adequate ac voltage. But perhaps most important is low charge rate. A 12% rate won't win any races, but as you have shown it will keep the unit in constant current. The greater the charge rate, the more critical ac voltage becomes.
How does the PD react to half the battery capacity? A short 15 min charge test would be interesting. How does the ac voltage look? Can you monitor it while charging. The dc voltage at the converter is also interesting to look at. Just my "wish list" if you're going to retest.
Sal
ktmrfs wrote:
so I guess the PD Can be a constant current source for a long while IF you have low enough resistance in the leads, and a big enough battery bank.
2 1/2 hours, down to 57.5A and up to 80%SOC