PD9245C-14.8

Almot,
Yes
Sent you a PM

Hey KJINTF, still interested in defunct Rogue 30A MPPT?

I have reunited with my trailer in Mexico, came back and brought Rogue to Canada. It's yours for shipping costs. Can't bring myself to taking it to recycling, still feeling bad that I've killed it. Tried 3 different controllers since then, nothing comes close in features and convenience.

Thanks - you inspired me to work to lower the 14.8V output of my "C" model to get it back down to the lower stock boost voltage of 14.4 which is going to serve as my new lithium bulk charge source (hopefully working as well as the 14.8 did for my GC2s). Note here that I only use the PD for boost alone powered by a wind-up timer while running the genset. I initially worked to design a solution that had variable output by installing the pot on the rear and running a very thin shielded cable from the 50K POT to near the DC side where the microprocessors and DC output was provided. (Back of unit faces toward me in implementation.) In my mind it was of course a work of art-work until I discovered the unit goes into bad oscillation unless the resistor is soldered right on the board. Then I wasted another half day before realizing that there is so much RFI pouring out of the device open case that it was making my digital multi meter go insane each time I tested the feature I had added. Turns out I should have put the case back on and tested it but after working on it about 8 hours, I got fed up with the constant oscillation (makes a squealing sound in the transformer) that I just soldered the stock value 34K resistor back to the board and at 14.37 would just call it a wrap.

I was quite confident I had ruined the power supply because my DVOM was scaling all over the place even with the resistor soldered right to the board. Then I simply put the PD case back on with the stock resistor and it was stable. Settled right back down with the case on. So will a pot work on this? Answer is that's extremely doubtful it would work even if testing it with the case closed and this is due to the large amount of RFI swirling around inside that case. On super close inspection, I see they even have a ground "tab" on the PCB running under that resistor which I assume is a late-add engineering change to try to keep some of that RFI out of the microprocessor pin which causes the oscillation you hear as the unit is powered down.

Now I must warn anyone who attempts this, if you are old-school and even if you have modern equipment, these components are all micro, for example the resistor in question is smaller than the tip of a fountain pen and you can destroy the board unless you have either a magnifying board camera or jeweler's glasses on. It's not easy and good chance there are only about 3 resistor swaps opportunities before you have destroyed the board. I got extremely lucky but for others, I don't recommend attempting this unless you have experience working with boards with micro components and have jewelers tools and a tiny soldering iron. Anyway thanks _ _ _ I'm "set" again until something else goes wrong.

don a
Yes I'm still alive and kicking

Sorry, I do not have any additional pictures. The several converters I have are in daily service being battery maintainers / chargers and simple power supplies. You might want to try an external adjustable resister aka POT to enable the desired voltage.

You should look through the earlier comments and obtain a good DMM to find the resister in question.

3 tons wrote:
I may be forced to consult the Oracle at Delphi…

3 tons

Definitely better stick with 3 because if you load 16 tons, what do you get?

MEXICOWANDERER wrote:
Send the manufacturers of these abominations, a giant stereo with 18" speakers and a thousand watt amplifier...

Include a CD of the 1070's recording by the Chambers Brothers

TIME!

Let the sound of the recording resonate through the mahogany lined offices.

TIME !

Rattle the windows

TIME!

Drop pictures from the walls

TIME!

Bake a cake for 45 minutes at 350F and it's finished

Therefore

Bake a cake at 3,000F for thirty seconds, and that otter do 'er...right? Same thing.

A converter is a converter. A charger is not a converter so if it waddles, quacks, and has feathers, it isn't a crocodile. Build a switch-over circuit in the dingle-dongle and select Converter OR Charger. The charger is programmable to meet the demands of a battery charge, not the needs of a Power Post Princess suckling at a spider-webbed cord hookup. When the charge is finished the unit DEFAULTS back to converter mode. How hard can it be?

Seems like a fairly reasonable and sage assessment, but to properly decipher it I may be forced to consult the Oracle at Delphi…

3 tons

KJINTF wrote:
It's a simple modification to increase boost voltage from 14.4 to 14.8 or almost anything you desire. Pin #5 of the micro controller is connected to a 32.4KOhm resister - drop the value by several hundred Ohms and the Boost increases - Simply solder a 60KOhm across the resister in question.

Any chance you are still around here KJINTF? I have a PD9270 with the solid 14.8V boost modification from Randy and I want to lower that to 14.4V. I used the pendant for generator boost charging only and this is too hot for my new batts. I've looked over the board and the microprocessor (assuming that's it, where the pendant wires run into it) and I don't see any non-factory looking board-work and I don't see any kind of pin-out on the little black IC that is not obviously labeled on the main board. I know it's a decade ago but do you have any photos or could I email you a photo of mine and you comment on what resistor I need to alter? Thanks!

Wow...... I believe we upset the Lead Acid Battery Guru

Converters work just fine for the vast majority of their users even with generators while boondocking lets not loose sight of reality

Send the manufacturers of these abominations, a giant stereo with 18" speakers and a thousand watt amplifier...

Include a CD of the 1070's recording by the Chambers Brothers

TIME!

Let the sound of the recording resonate through the mahogany lined offices.

TIME !

Rattle the windows

TIME!

Drop pictures from the walls

TIME!

Bake a cake for 45 minutes at 350F and it's finished

Therefore

Bake a cake at 3,000F for thirty seconds, and that otter do 'er...right? Same thing.

A converter is a converter. A charger is not a converter so if it waddles, quacks, and has feathers, it isn't a crocodile. Build a switch-over circuit in the dingle-dongle and select Converter OR Charger. The charger is programmable to meet the demands of a battery charge, not the needs of a Power Post Princess suckling at a spider-webbed cord hookup. When the charge is finished the unit DEFAULTS back to converter mode. How hard can it be?

I was told by Randy that PD is offering the 14.8v models in the complete line of 9200 series. He said the 45amp is on the Web site because it's the most popular model. According to him all the voltages stay the same except for the boost mode is 14.8v.