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

[cwah]

Guys, guys!

Look at what I've found!!

http://www.ebay.com/itm/DC-DC-600W-10-60V-to-12-80V-Boost-Converter-Step-up-Module-Power-Supply-/170893208817?pt=LH_DefaultDomain_0&hash=item27ca076cf1

An high power and high voltage DC to DC voltage converter!

Now you can use almost any power supply to charge your lipo anywhere!


Going to get few of them

 

[Cheeseboy]

Hi, what benefits would this have over say, this meanwell-style power supply:

http://www.ebay.com/itm/600W-60V-10A-Switching-Power-Supply-With-Current-Control-Charger-LED-CCTV-USI-/120951823627?pt=LH_DefaultDomain_0&hash=item1c294a5d0b

Apart from greater output voltage range, I can see the appeal of that definitely.

So this converter allows CC/CV as required to charge LiPo?

Sorry I'm rather out of date on my information, but need something to bulk charge Konions, this would be perfect! (as balancing is redundant)

I could use any 12v or 24V power supply!

more noob questions but,

is the ground isolated? because then you can put two in series to get up to 120V at 1200W

two in parallel would work as well right?

And wow, these are so cheap, pair a couple with a server supply and you've got 1200Watts for under $80!

or am I completely wrong?

Thanks, these look great!

Edit: "maximum input current of 15Ah" So 40v is required to get full 600watts, but 360watts at 24v is still great for the price isn't it? Just get a few in parallel

 

[Jeremy Harris]

The description's a bit misleading, though. Say you wanted to charge from a 12 V car battery. The input current is 15 A max, so that means a maximum input power of about 180 watts, and a maximum output power of around 170 watts, well short of the "600 W" claim in the title. If you had a pack that was, say, 15S LiCoO2 Lipo, and needed around 63 V to charge, then the charge current would be around 2.7 A maximum, OK, but not quite as high as the description might at first lead you to believe.

Nice find though, especially for those looking for in-vehicle charging.

 

[iperov]

same converter twice cheaper http://item.taobao.com/item.htm?spm=a230r.1.10.1&id=19150764884

 

[cwah]

same converter twice cheaper http://item.taobao.com/item.htm?spm=a230r.1.10.1&id=19150764884

Yes, but I believe the shipping and paypal charge is not included in Taobao. I think the final price is not that different unless you buy it in china

 

[cwah]

Hi, what benefits would this have over say, this meanwell-style power supply:

http://www.ebay.com/itm/600W-60V-10A-Switching-Power-Supply-With-Current-Control-Charger-LED-CCTV-USI-/120951823627?pt=LH_DefaultDomain_0&hash=item1c294a5d0b

Apart from greater output voltage range, I can see the appeal of that definitely.

So this converter allows CC/CV as required to charge LiPo?

Sorry I'm rather out of date on my information, but need something to bulk charge Konions, this would be perfect! (as balancing is redundant)

I could use any 12v or 24V power supply!

more noob questions but,

is the ground isolated? because then you can put two in series to get up to 120V at 1200W

two in parallel would work as well right?

And wow, these are so cheap, pair a couple with a server supply and you've got 1200Watts for under $80!

or am I completely wrong?

Thanks, these look great!

Edit: "maximum input current of 15Ah" So 40v is required to get full 600watts, but 360watts at 24v is still great for the price isn't it? Just get a few in parallel

Yes, few in parallel would be great. Not sure if it's possible to do that as they are not isolated. Maybe someone can help here.

 

[cwah]

The description's a bit misleading, though. Say you wanted to charge from a 12 V car battery. The input current is 15 A max, so that means a maximum input power of about 180 watts, and a maximum output power of around 170 watts, well short of the "600 W" claim in the title. If you had a pack that was, say, 15S LiCoO2 Lipo, and needed around 63 V to charge, then the charge current would be around 2.7 A maximum, OK, but not quite as high as the description might at first lead you to believe.

Nice find though, especially for those looking for in-vehicle charging.

Yes, haven't realised this trick. But as maybe as cheeseboy mentionned we could put them in parallel to increase the final output. These converter are really small and nice to carry with me. I have a 24V 600W power supply at 1 kg, and if I can parallel 3 of them together, I can have a nice portable power supply around 500W at less than 2 kg

 

[deVries]

But as maybe as cheeseboy mentionned we could put them in parallel to increase the final output. These converter are really small and nice to carry with me. I have a 24V 600W power supply at 1 kg, and if I can parallel 3 of them together, I can have a nice portable power supply around 500W at less than 2 kg

Cwah, that's $72 for three, and 2Kg is not a light-weight setup.

These don't have isolated input or output, so I don't think you can power these 3 in parallel from your one 24v PS.

I would not recommend anyone use these types of setups. These can be very dangerous, shock injury & battery damage or worse, if you're not an expert at handling and setting-up these PS combinations.

Plus, there are much SAFER and EASIER charging setups for similar pricing.

Cwah, I think this is Don Quixote attacking a problem at these windmill funky cheap-ass PS. It is just the wrong solution or means to an end. If this was a great idea, then the experts on ES would have done this 4+ years ago. Seriously!

Also, you have posted about 5 threads with similar cheap step-up converters, same idea over and over, and no expert has helped you move forward with your ideas. Can you not take this as a hint that this is not a good idea???

Please copy the successful ideas that are already available to you by searching ES.

 

[cwah]

Please copy the successful ideas that are already available to you by searching ES.

I persiste until I find a viable solution :lol:

Do you understand the trick done by DrBass on his thread for DC-DC converter?
http://endless-sphere.com/forums/viewtopic.php?f=14&t=29024

I keep reading his explanation and chart but I still don't get it :lol:

 

[deVries]

The description's a bit misleading, though. Say you wanted to charge from a 12 V car battery. The input current is 15 A max, so that means a maximum input power of about 180 watts, and a maximum output power of around 170 watts, well short of the "600 W" claim in the title. If you had a pack that was, say, 15S LiCoO2 Lipo, and needed around 63 V to charge, then the charge current would be around 2.7 A maximum, OK, but not quite as high as the description might at first lead you to believe.

If you examine the specs, then it's not that good...

Output power: the effective power P = input voltage V * 10A

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

Cwah 24v PS is limited to 10A input, so 240w = 3.8A charge @ 63v.

For a single slow bulk charger, if you already have a PS to power it, then this might work. You would still have to have a diode on the output and maybe a fuse too.

 

[deVries]

Please copy the successful ideas that are already available to you by searching ES.

I persiste until I find a viable solution :lol:

Do you understand the trick done by DrBass on his thread for DC-DC converter?
http://endless-sphere.com/forums/viewtopic.php?f=14&t=29024

I keep reading his explanation and chart but I still don't get it :lol:

Yes, this is a great idea. For some reason I understand it easily, though it is a bit of a mind warp too. :lol:

Even if you don't understand it you can probably follow the instructions to do it??? Yes, you can!

 

[cwah]

I'm a bit slow to understand, I asked you few more questions on the DrBass thread.

Can you help a bit? I'm trying to understand before buying these DC-DC converter. It may be a good solution

 

[deVries]

I'm a bit slow to understand, I asked you few more questions on the DrBass thread.

Can you help a bit? I'm trying to understand before buying these DC-DC converter. It may be a good solution

I posted there about 20 minutes ago. Ask me another question in that thread for more info...

Doctorbass' idea/solution is excellent. You should use his idea/solution if possible & if it's a "good fit" for your application.

 

[cwah]

I did. Please check the thread

 

[cwah]

Finally, the isolated high current and cheap DC-DC converter seems to be impossible to find.

These cheap non-isolated converter still seem to be a way to get a cheap and portable charger.

 

[deVries]

Finally, the isolated high current and cheap DC-DC converter seems to be impossible to find.

These cheap non-isolated converter still seem to be a way to get a cheap and portable charger.

Doctorbass found his 48v isolated DC/DC for $20 250w. That's a fantastic deal, and I promise you there are many for sale now on ebay. You just have to know how to search and be patient! Cwah, I know you're an awesome searcher... don't sell yourself short... you can do it.

These cheapo non-isolated converters you keep finding always end-up doing only a VERY LOW AMP charge at higher 50v+ volts, AND you can't use more than one "as is" because there is NO isolated input or output. You are the Don Quixote of these never ending windmills of "kooky" step-up converters! :lol:

Quixote Son, please restrain yourself and save yourself from attacking this crazy idea and never ending madness of windmills...

 

[iperov]

same converter twice cheaper http://item.taobao.com/item.htm?spm=a230r.1.10.1&id=19150764884

Yes, but I believe the shipping and paypal charge is not included in Taobao. I think the final price is not that different unless you buy it in china

10% charge to agent = 1,1$
plus shipping small light package

 

[cwah]

Iperov, do you usually directly buy from Taobao?

How do you deal with all this chinese? I don't understand much and google translate isn't that good.

 

[iperov]

yes I usually buy from taobao.
Buy electronic components from taobao is most cheap solution.
Most items I bought through www.yoybuy.com agent, just click new order and paste taobao link
If you buy batteries you need use www.taobaotrends.com agent.

Here I bought panasonics from taobao.

 

[cwah]

Thanks. How do you search for product? Everything is written in chinese. I don't know how to spell power supply in chinese. :lol:

Do you ask your agent to look up for product for you?

 

[Cheeseboy]

These don't have isolated input or output, so I don't think you can power these 3 in parallel from your one 24v PS.

Correct me if I'm wrong, but isn't Isolation only necessary for series connection? you can chuck any power supply/dc-dc in parallel so long as their voltages are equal, can't you?

Please keep the thread updated with the Taobao stuff, because I might give it a shot, someone has to, and I found 1kw of 24v supply for $5, which is why things like these are attractive, because much much cheaper supplies can be found at lower voltages, so the price of the converter does not need to be that cheap for money to be saved.

How difficult would it be to increase the current limit on the input from 15A? I am sure it's possible somehow

edit: total amount for three through youbuy is $62.64, total amount for 5 is $93.76. but maybe I'm doing it wrong :lol:

 

[iperov]

Thanks. How do you search for product? Everything is written in chinese. I don't know how to spell power supply in chinese. :lol:

Do you ask your agent to look up for product for you?

google translate

 

[cwah]

Thanks, I think that google translate is going to be my new friend :lol:

 

[Cheeseboy]

While more expensive, this one seems higher quality,

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=251076834291&ssPageName=ADME:X:RTQ:US:1123#ht_3229wt_1139

I have confirmed with seller that output is isolated from input. so putting in series with 12v power supply would make 60v at 10A...

Also with the original converter on this thread, the ebay seller has said $115 for 5 or $220 for 10, although taobao is much cheaper for higher quantities.

 

[cwah]

While more expensive, this one seems higher quality,

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=251076834291&ssPageName=ADME:X:RTQ:US:1123#ht_3229wt_1139

I have confirmed with seller that output is isolated from input. so putting in series with 12v power supply would make 60v at 10A...

Nice finding cheesyboy, althought a bit pm the expensive side. Some members know how to look for same item in taobao. Would this one be also much cheaper there?