PD or Iota for my upgrade?

renoman69 wrote:
OK, I am doing a preliminary test to make sure I didn't put my foot in my mouth. Drew my 450 AH bank down to 11.8V. Pulled the plug on the solar and plugged in the Iota 45 With IQ4. It has been almost 40 minutes now and the pendant is still on rapid flash which means it is still in bulk mode. IPN remote is reading 42 amps and bouncing between 14.6 and 14.7 volts. I did not pull the fuse to remove parasitic draw. It started out at 43.8 amps but dropped to 42 in about 10 minutes. I will post again when it drops out of bulk but it looks like the 20 minute thing is incorrect. I thought it was in the past but never really put a clock on it.

Not sure what the voltage reading is taken from, but the Iota IQ4 is supposed to stay in bulk till the battery voltage reaches 14.6, then 15 min later it drops to Vabs of 14.2.

To get the battery voltage to 14.6, converter voltage goes to 14.8.

It would take quite a while to get a bank of four to 14.6v from 50% SOC using 45a, so the test here looks normal to me. I gather the amps are a bit low because there is still a small draw on the batteries and you are recording net amps. This will also make it all take longer than if batts had no draw of course. I am unclear if the small loaded voltage also makes it harder to get the batts to 14.6. Probably the same thing looking at it another way.