600W 10-60V to 12-80V converter

What do you mean by less than reliable? What could happen? I was thinking about leaving that charging my battery for several hours on about any power supply.

Are unstable power supply bad for batteries? ATX and laptop power supply shouldn't be used then?


Anyway, I have my BMSBattery charger coming so I can test with them.
 
ZOMGVTEK said:
These things look quite good if you believe the specs.
Click to expand...
A quick analysis shows their specs to be worthless BS. Total crapola...

cwah said:
Blue wattmeter is the voltage from the 12V 500W ATX power supply.
Red wattmeter is the voltage to the 20s lipo battery.

A strange noise is starting from 6A onward. I don't know what is it. The noise is similar to the one I have on my hyperion.

At 10A, it can pull around 85W (the blue wattmeter is a over-rated). So I'd say around 75% efficiency.
Click to expand...

I posted earlier giving their "fine print" specs as follows:

With the above spec in mind, then the 12v battery/PS * 10A = 120w = 1.9A charge @ 63v.
Click to expand...

Even their "fine print" specs are false above, as is shown by you that it only outputs 85w vs the theoretical 120w it should do just above.

So, it will charge with significant audible noise at 1.3A @ 63v...

My opinion, these are junk PS, and should be avoided as a VERY POOR CHOICE for charging batteries... :roll: :mrgreen:
 
but according to Zomtek it's because my power supply is unstable. I have exactly the same noise with my hyperion 1420i and I think I know why they are making this pitch noise. I understand why CC/CV power supply are so important now :lol:

I've checked my power supply output voltage and it varies of 0.01V continuously even without charge. You can see this behaviour on the video.


I have to find a stable power supply or a CC/CV power supply and test them to see if I have the same results.
 
It wasn't in parallel and I'm not going to try to put them in parallel before I'm sure it's going to work well.

I have this cheap 600W 24V power supply (http://www.hawk-rc.net/index.php?route=product/product&path=40_54&product_id=255) for my hyperion. But my hyperion is producing the exact same pitch noise which means that the power supply is unstable.

So I believe I'll have the same result with this power supply on the converter. Pitch noise would appear again on the converter.

Not sure how I can stabilise the output of my power supply?
 
I have this cheap 600W 24V power supply (http://www.hawk-rc.net/index.php?route= ... uct_id=255) for my hyperion.
Click to expand...

This PS is overkill, and it is NOT STRESSING this PS to power your Step-Up Converters. It can easily power one or more than one converter without overloading this power supply.

When you're ready to test in parallel, YOU ASSUME ALL RISKS DOING THAT, then you can easily power 3-4 of the Step-Up Converters @ 63v+ (plus what it can go to) & not kill your PS with too much load on it. LOAD won't kill it...

You might kill it by other means not knowing what you're doing though. ;) :lol:

Go for it... Do it... Experiment with the magic smoke possibilities if you dare!!! :twisted: :mrgreen:
 
Cheap power supplies tend to be cheap for a reason. It's rare to run across a cheap DC-DC or SMPS that works great. Most of these things are just crummy designs and the best way to fix them is replace them. Quality high power stuff is not cheap to design, or manufacture. Cheap Chinese stuff tends to skimp on both parts. Sometimes it works great, but a good rule of thumb is cut the advertised numbers in half and consider those the new limits. That way you have a better chance of it lasting.

You were testing this unit at <12V input? Do you have a higher voltage supply to test it on? It might just not be happy trying to boost 11.7V up to 77V. The smaller the input-output voltage differential, generally the easier job the boost converter has. It might be OK for your application if you run a higher input voltage.

You are likely getting a squealing noise on your Hyperion as a result of the cheap SMPS powering it. It's probably 'OK', but thats not a great sign.
 
Thanks for the explaination Zomgvtek. I was thinking about using laptop power suppy or computer power supply to charge my battery. It would be something cheap and easy to do anywhere.

Isn't there a way to stabilize the output? I can go way below the maximum rating, but I need it to be reliable. I have my other 24V power supply I can test to see if it works better.


By the way, what would happen if the power supply fail, or if the converter fail? I just need to be sure my battery won't be killed as it would be the most expensive part of my setup.
 
Can I use this as output stabiliser?
http://www.ebay.co.uk/itm/DCDC-Stabilizer-Converter-Regulator-8-40V-to-12V-24V-36V-to-12V-Waterproof-/261080996082?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&var&hash=item3cc9a3d8f2&_uhb=1#ht_2436wt_1021

Maybe it would work better on the output of my power supply
 
This inverter can be adjusted to 75v for 18s lipo right ?
And the input range is between 10-60v...then I could charge a 18s lipo pack with a solar panel ?, I think most solar panels deliver between 15v and 25v.

Or am I missing something ?
 
Yes, the converter can be adjusted anywhere between the input voltgage (minimum 12V) and 80V. I even managed to go up to 91V but didn't want to go higher.

It's probably a nice module for solar panel. A bit big, but this is the only converter able to go that high in term of voltage.
 
I tried with a 20V 65W laptop power supply:
laptop_power_supply2.jpg


laptop_power_supply.jpg



The noise still appear from 6A onward... However, I wasn't able to go further than 7A as the power supply completely shut down.

Can potentially be useful for low power charging. I'm going to use this setup at work to charge my A123 20AH battery.
 
I'm still trudging through my taobao order, my total final price for 3 is $66. The savings from ordering through taobao will increase significantly with a purchase of a higher number of units, even for 5 the savings would be much greater.

I'm hoping they work better with 48v input, common sense would say that they should, but we'll see
 
chinese site no thanks i will pass and pay the ebay price since it is english site.


iperov said:
same converter twice cheaper http://item.taobao.com/item.htm?spm=a230r.1.10.1&id=19150764884
Click to expand...
 
Today I got mine, and I played a bit with it.

I thought it had a range from input 10-60v till 12-80V no matter what input was.

I put in 40V DC and put the switch at Off then I have 40V dc at the output as well, when putting the switch to on I can go from 40V till about 70V
But not lower then the input voltage and not above 70V

When the input is 20V the same story and I can not get higher then about 50V ( something like this )

These DC DC converters are new to me is this normall ?
 
Nice, It is working really well.
So I can charge my 18S lipo with a 12v car battery in case of an emergency ?? :D
 
the item just got added to one of the sites I frequent:

http://www.goodluckbuy.com/dc-dc-600w-10-60v-to-12-80v-boost-converter-step-up-module-power-supply.html

if only it was there before I went through the hassle of taobao!

Edit: This one looks pretty much like a complete charging set up for up to 60v...

http://www.goodluckbuy.com/zxy6010-dc-constant-voltage-current-power-supply-module-60v-10a-600w.html

My converters are due to arrive soon so I will be able to run some tests.
 
I do like it, I get and efficiency of about 87% and at 15A input it gets very hot, the big spiral on top gets really hot, other parts too, I wonder if it can handle 15A for a long time.
I saw some smoke, probably from the spiral part so I limit it to 7A input.
 
Is it as noisy as it is on my video at 15A?

And what charger do you use for that? I'm wondering if what I have is because of the bad quality charger I have
 
No sound at all ! I do recognize the sound yours is making, my mastech 7030 power supply also makes that sound at the lower amps.

I did use a 6S Lipo pack at the input, I will try another supply to and will post the results.

Did yours get hot too and can you run 15A for some time without getting smoke ?
 
No, I didn't try to get it higher because with the pitching noise I was afraid to blow it lol.

I had the same result with laptop power supply and computer power supply.

Can you try with a power supply to see what you get?

The little tool can be great to check the quality of your power supply then :lol:
 
No noise at al, 100% silent, maybe a small buzz at 13a input and gone at 14a. 540 watt Turnigy power supply.

But it does get hot at higher then 6A, I'm afraid it will burn, maybe installing a small FAN ? The mosfet at the bottom reach 45 Cel. not a problem, but the spiral on top is getting too hot to touch, what is the max. temp for this spiral part ?
 
The inductor (spiral part) is saturating badly if it is getting that hot, it is inadequate for the job, or has exessive DC resistance (unlikely, looking at the number of turns).

They can work at reasonably high temperatures, just inefficient (as you have seen). If the enamel softens or charrs, then its no good :)
 
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