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Sep 14, 2018, 12:28 PM
Use the 4S Luke
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Kevin - I replied to your email.
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Sep 14, 2018, 10:43 PM
Registered User
Kevin Matney's Avatar
I did you back
Sep 15, 2018, 04:33 PM
Dany
dpelletier's Avatar
I've been using your 24V47A power supplies for a few years now.
First on a Powerlab 8 and the last two seasons on an iCharger duo 410. I've been very happy with my setup over the last many seasons.

I was just curious about something, the Duo 410 can take up to 50 volts input.
Seems to me that using a higher voltage PSU would be beneficial in that the amperage would be lower for a given charge draw and therefore less heat and longer component life... Am I correct?
Or am I just wasting bits typing all this.
What kind of lifespan can I expect out of the 24V47A from you that I currently use.
There are currently a few 48v PSU available commercially, do you have anything.

Thanks for your input and thanks for all the help you offer us hobbyists.
Dany
Sep 16, 2018, 05:29 PM
Use the 4S Luke
feathermerchant's Avatar
Dany
The power supplies I sell are used but they are built using very high quality parts. I have no stats on lifespan except the first year because I offer the one year warranty. I have few (but some) returns. I test each one to full power before it ships and that weeds out a few.

As for the 48V input, I have no source. I have combined 4 12V supplies for 48V but they did not last very long. Probably because they were not built for a high voltage offset from ground. A 48V power supply would reduce input current and maybe make it run a little cooler. It depends mostly on your maximum charging Watts.

The 4010 Duo is capable of a 50V input but you cannot get full output (2,000 Watts) unless you have at least 34V input.
So what kind of an output is possible with a 24V 47A power supply? Since the charger input current is limited to 65A, then the charge output limit is determined by the power supply.
24V X 47A X 90% = 1,015 Watts
That is about half of its capabilities. So I always ask my customers if they really need or will use 2,000 Watts of charge power and where they can plug a 2,200 W power supply. They may be overspending on a charger just because it is powerful.

BTW you can use a little more if the 4010's capacity if you buy one of my 24V 69A power supplies.
24V X 65A X 90% = 1,404 Watts
Sep 16, 2018, 09:30 PM
Dany
dpelletier's Avatar
Quote:
Originally Posted by feathermerchant
Dany
The power supplies I sell are used but they are built using very high quality parts. I have no stats on lifespan except the first year because I offer the one year warranty. I have few (but some) returns. I test each one to full power before it ships and that weeds out a few.

As for the 48V input, I have no source. I have combined 4 12V supplies for 48V but they did not last very long. Probably because they were not built for a high voltage offset from ground. A 48V power supply would reduce input current and maybe make it run a little cooler. It depends mostly on your maximum charging Watts.

The 4010 Duo is capable of a 50V input but you cannot get full output (2,000 Watts) unless you have at least 34V input.
So what kind of an output is possible with a 24V 47A power supply? Since the charger input current is limited to 65A, then the charge output limit is determined by the power supply.
24V X 47A X 90% = 1,015 Watts
That is about half of its capabilities. So I always ask my customers if they really need or will use 2,000 Watts of charge power and where they can plug a 2,200 W power supply. They may be overspending on a charger just because it is powerful.

BTW you can use a little more if the 4010's capacity if you buy one of my 24V 69A power supplies.
24V X 65A X 90% = 1,404 Watts
Thanks for taking the time to reply with such detail. It's easy to get lost in the numbers game and lose sight of actual needs.
I like the duo because of the two independent channels but I have actually never charged anything at more than 25 amps anyway.
Most I've ever done is some 6S batteries on one side at 25 amps and 4s batteries on the other side at 25 amps.
for a maximum of 1,050 watts.
So my current setup suites me fine as is.
Although if I were to want to charge 4 x 6s 5000mah batteries at 2c, your 69A power supply would be useful. But then again that would be pushing my Honda 2000 generator to its limit.

So, after all this pondering I think I'll just stay as I am.
But I will probably buy another one of your power supplies as a second unit, for travel or for home not to mention being a backup.
Either your 24v 69a or maybe your 24v 75a for the smaller size. I'll see come spring time :-)

Thanks again for your shared knowledge and input.
Dany
Sep 16, 2018, 10:02 PM
Registered User
Kevin Matney's Avatar
I was using mine at the field today and had it stop working till it reset it self. the fan ran but no green light
Sep 17, 2018, 05:52 PM
Use the 4S Luke
feathermerchant's Avatar
I wonder why... Are you running it from a generator?
Sep 17, 2018, 08:15 PM
Registered User
Kevin Matney's Avatar
110 from our power line at the field. And the same from home
Sep 18, 2018, 10:48 AM
Dany
dpelletier's Avatar
Quote:
Originally Posted by feathermerchant
I wonder why... Are you running it from a generator?
Just wondering why you asked this question, are generators problematic?
I use mine on my Generator all the time, Honda 2000.
Sep 18, 2018, 10:37 PM
Use the 4S Luke
feathermerchant's Avatar
Generators can be problematic when operated at or near full capacity. I have seen some get unstable. Best to have some margin of capacity.


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