Forum Discussion

gitpicker2009's avatar
Nov 23, 2015

Some additional info about Intellipower AC to DC converters

I recently had to replace my two batteries in my AF1150, and have been using a battery minder to maintain and desulfinate the batteries.

After doing some research and talking to the folks at Progressive Dynamics (they make the Intellipower charge wizard converter that came with the TC) I found out that you don't need one.

The unit does all of that automatically, including a periodic "over charge" to stimulate the the electrolyte.

Here's their info:


45 Amp Progressive Dynamics Inteli-Power 9200 Series Converters with built-in Charge Wizard will recharge your RV's battery to 90 percent in 2-3 hours. Many converters only have one charging mode, 13.6 volts, which can result in battery boil-off. The 9200 Series converters have four charging modes: BOOST (14.4 volts), NORMAL (13.6 volts), STORAGE (13.2 Volts) and DESULFATION (13.2 volts with a 15 minute 14.4-volt burst every 21 hours). Boost Mode: Rapidly brings RV battery up to 90 percent of full charge. Normal Mode: Safely completes the charge or maintains the charge. Storage Mode: Maintains charge with minimal gassing or water loss during periods of non-use or storage.

Note: It will only do the Boost mode if the batteries have not been used for 30 hours.

I thought some you might find this useful so you don't go out and blow the 40 bucks on the separate maintainer/desulfinator like I did:)

Somebody, somewhere had told me that the systems that come in the RV's do not maintain batteries well. Now, at least for those of us with the Intellipower units, it appears that they do.

These converters may be in other coaches too, so I hope this helps.
  • The little "pulse desulfation" boxes that are sold essentially do nothing at all. I bought one on the recommendation of the battery distributor (who was also selling them....) hooked it up and took current and voltage waveforms with a digital recording oscilloscope. It basically did nothing, superimposing a low amplitude AC waveform which was less than the ripple from the charger.

    For flooded batteries a good 4 state charger is a much better investment.
  • RoyB's avatar
    RoyB
    Explorer II
    All I know is I have been using my PD9260C since 2009 for my 255AH Battery bank and they are still doing well. They are just now starting to fall abit on performance..

    Although the DESULF mode only uses 14.4VDC verses what other smart mode converter/charger use this has been a blessing for me as I was forced into LED LIGHTS due to RFI issues with my HAM RADIO OPS that did not have built-in DC REGULATOR circuits that let them operate well within a 9-30VDC system. My cheap LED BOARDS are speced at 12-14VDC operating DC Voltage.

    So far none of these boards have popped any large numbers of three LEDs in a roll on the board. I have one board that has two sets of these three led's OFF now since 2009 install.

    My setup has a good external DV VOLTMETER setup and I have seen the system go into DESULF mode many times...

    I don't know first hand about your other statement as only going into BOOST mode after 30 hours or so. My PD9260C setup goes to BOOST mode when I first turn it on and if the batteries are fully charged already it then drops back to Normal mode in a few minutes. I have seen it go to BOOST mode on its own with my meter monitor but never really did any timing on it...

    I am usually in OFF-ROAD mode running off the batteries during the one day/night run and then using the PD9260C for three hours the next morning running from my 2KW generator setup to return my 50% discharged batteries back up to their 90% charge state..

    Roy Ken