PD or Iota for my upgrade?
I'm thinking about a converter and battery upgrade. The batteries will be wet cell lead acid 6 volt Possible T-105s or the 230AH, EGC2 from Sam's club. I'll probably go for four. (Does nayone have...
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The bank of 460ah starting around 50% SOC should accept over 80amps constant for about an hour before amps taper based on battery acceptance rate for low-14s volts. My PowerMax 100amp converter does this everytime on my bank of four 6s rated at 458ah.
An 80amper would go a bit longer than the 100amper at current limit.
The battery will cause the amps to taper eventually of course. Amps do not stay constant for the entire time the converter is in "boost" but will taper when the amps hit the "natural acceptance rate curve" for that absorption voltage the converter gets the battery to and holds there.
Fisherguy's plot of his 9280 shows that the PD will drop out of boost voltage "early" if the battery gets charged up before the four hours is up.
I have posted many graphs showing various times of constant current with different makes of chargers and sizes of banks. Not home right now to re-post all that here.
The PD is different by not holding constant amps at first when it "should" when the battery bank will accept those amps. All we want in a charger is that it will do what the battery will accept and not less than that, like a PD.
There may be other reasons to prefer a PD for your RV, to do with the Charge Wizard. Perhaps you have a small generator so you have to hold the converter at 13.6 for a while at first before letting it go to 14.4. Or maybe your rig's converter-battery wiring is too restrictive, so you need to force boost voltage to get at least some amps going.
An 80amper would go a bit longer than the 100amper at current limit.
The battery will cause the amps to taper eventually of course. Amps do not stay constant for the entire time the converter is in "boost" but will taper when the amps hit the "natural acceptance rate curve" for that absorption voltage the converter gets the battery to and holds there.
Fisherguy's plot of his 9280 shows that the PD will drop out of boost voltage "early" if the battery gets charged up before the four hours is up.
I have posted many graphs showing various times of constant current with different makes of chargers and sizes of banks. Not home right now to re-post all that here.
The PD is different by not holding constant amps at first when it "should" when the battery bank will accept those amps. All we want in a charger is that it will do what the battery will accept and not less than that, like a PD.
There may be other reasons to prefer a PD for your RV, to do with the Charge Wizard. Perhaps you have a small generator so you have to hold the converter at 13.6 for a while at first before letting it go to 14.4. Or maybe your rig's converter-battery wiring is too restrictive, so you need to force boost voltage to get at least some amps going.
