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rtate's avatar
rtate
Explorer
Nov 13, 2018

Another question on Converter sizes

There is another active thread regarding converter sizes, but I get lost in the wealth of detail offered here. I have a simple question: I have a PD 9200 , 45 amp converter, two Trojan T105 batteries and a Honda 2000w generator.

With my setup, should I see a 14.4v boost charge if my batteries were discharged down to 11.5 volts while charging with the generator?

How about charging with shore power?

25 Replies

  • I actually have a series 9200 converter. not a 9100. I should receive the new pendent tomorrow so I will be able to see what the converter is doing. Dont remember exactly where I have the volage meter tied in .I think it is very near or right at the battery. Wireing might be the problem as you suggested.
  • rtate wrote:
    I dont recall seeing my voltage over 13.6 volts. I have a charge pendant on order so Ii will be able to force it into boost mode.


    Is that measured at the batteries? If so, it may be well worth your time to check the connections between the converter and the batteries (and maybe upgrade the wire size). A not great connection can cause a noticeable voltage drop at high currents.

    The PD converters do have a tendency to not quite give full voltage at high charge currents; they are a little power limited. Indeed, the specifications list the "full load output voltage" simply as >12.6V. (I would guess that is the worst-case with the minimum specified line input voltage of 105V, and they may be able to do a little better with a better supply.) As the current tapers down, the voltage rises up to the setpoint voltage.

    If you actually have a PD 9100 series converter without the (optional for that model) charge wizard, the output voltage setpoint will be fixed at 13.6V all the time.
  • I dont recall seeing my voltage over 13.6 volts. I have a charge pendant on order so Ii will be able to force it into boost mode.
  • There's no difference whether using generator or show power. Your converter will start in boost mode at 14.4 volts
  • Yes and yes.....I would hope so.
    But it depends entirely on the design of the PD 9200 and whether it is working right or not.
    I'm sure that someone else knows more about that converter; hopefully they can give you a short answer.

    P.S. Sometimes it takes a few minutes for the converter to "decide" that the higher rate is really needed.

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