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psa: Chargeverter is LOUD

zanydroid said:
Are they officially supported for parallel?

Usually official parallel have current balancing signaling cable or the like, to automagically do that stuff
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I asked Digikey about paralleling them, I was specifically asking about paralleling the on/off 12v aux and signaling pins rather than the main outputs, because I was already confident in paralleling the main output.

I'm not sure they precisely understood my question but they said yeah duh and pointed to this excerpt in the manual:

"The power supply can be turned ON/OFF individually or along with other units in parallel by using the "Remote ON-OFF" function"

HEP-2300-MEAN WELL Switching Power Supply Manufacturer

MEAN WELL is one of the world's few standard power supply mainly professional manufacturers, covering 0.5 to 25,600W products are widely used in industrial control, medical and other fields, in line with international safety certification, short delivery of spot inventory.
www.meanwell.com
 
Brucey said:
Ended up ordering an HEP-480-54, just 8.9A but that will be sufficient for my base loads and then I'll get a second for redundancy later and a little extra juice for charging.
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I might give this a try too :)
 
mmmmmdonuts said:
So does the audible whine happen when it is in parallel only or when they are alone as well?
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It's only paralleling a 2300W with a 180W that I have noticed it prominently.

With my 2300W alone, which is my grid supply now and gets used daily, I am 50% sure I can walk into the room and hear whether it's on, but it's super faint. If you remember how CRT TVs made a high pitch whine that some people could hear and some couldn't, it's about half as audible as that.
 
hwy17 said:
It's only paralleling a 2300W with a 180W that I have noticed it prominently.

With my 2300W alone, which is my grid supply now and gets used daily, I am 50% sure I can walk into the room and hear whether it's on, but it's super faint. If you remember how CRT TVs made a high pitch whine that some people could hear and some couldn't, it's about half as audible as that.
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Good to know. I have a litime balancer running on my four 12V 100Ahs and it has the slightest whine when balancing but have to be very close to hear it.
 
That's great to know about the slight audible noise. I have so many other noises going on I know that would never be noticed. I know the exact noise your talking about though.

I mean in context I can hear the chargverter OVER an RV AC which is ridiculous.
 
HEP-480-54A received. Weighty, definitely has some heft to it. Sitting on 16 280Ah cells for scale. Need to wire up a plug and prob get some new 5/16th lugs for those tiny output wires so I can hook it up to the distributor.

20240628_160349.jpg
 
Ok yes I Be1eeb that's the one Will is referring to. I like the name "Mean Well" too. They really do mean well. :rolleyes:
Couldn't these companies afford to pay some poor Native English teacher in China $5 or something to review the names they choose for their products? Wasn't there another company selling a shunt with a name like Crapola or something? Junktonka? Forget exactly what it was. If I ever introduce a product to the Chinese market I'm going to deliberately give it a name in Chinese that means like "Smash Yo' Mama." Give those Chinese a taste of their own medicine. 🥳
 
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kolek said:
I like the name "Mean Well" too. They really do mean well.
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The founder named the company in the 1980s before Taipei was crawling with expats and before the internet, allegedly using an English dictionary to find words that would sound & meaning pun with a Chinese name of the company.

There’s plenty of companies from the 1980s with similarly awkward names, it’s just part of the texture of history at this point. If you own it/rock it you can make cowboy boots and awkward names work.
 
zanydroid said:
If you own it/rock it you can make cowboy boots and awkward names work.
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Yep. It's fun. I live in Japan and every time I leave the house I encounter Japanese wearing wearing shirts emblazoned with noteworthy phrases like "Crap Your Hands."

I wouldn't have it any other way.
 
kolek said:
Yep. It's fun. I live in Japan and every time I leave the house I encounter Japanese wearing wearing shirts emblazoned with noteworthy phrases like "Crap Your Hands."

I wouldn't have it any other way.
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Taiwan is a 70% Chinese, 20% Japanese, 10% American mashup so it makes sense to have some of the Japanese cringe there too.
 
zanydroid said:
There’s plenty of companies from the 1980s with similarly awkward names
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I once purchased an oscilloscope from these guys:
www.gwinstek.com

Home-GW Instek

Home,Digital oscilloscopes, AC Power Source, Spectrum analyzer, Arbitrary Function Generator, DC Power Supply, DC Electronic Load, Digital Meter, LCR Meter, Safety Tester, Hi-Pot Tester
www.gwinstek.com www.gwinstek.com

Their actual company name is Good Will Instrument Co., Ltd.
Not to be confused with Goodwill, the non-profit.

They seemed friendly enough.
 
zanydroid said:
The founder named the company in the 1980s before Taipei was crawling with expats and before the internet, allegedly using an English dictionary to find words that would sound & meaning pun with a Chinese name of the company.

There’s plenty of companies from the 1980s with similarly awkward names, it’s just part of the texture of history at this point. If you own it/rock it you can make cowboy boots and awkward names work.
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Sparkle Power is another one I like. Does not exactly give the vibe of high quality power supplies, but that's what they are (more or less, idk, they're an OEM).
 
hwy17 said:
Sparkle Power is another one I like. Does not exactly give the vibe of high quality power supplies, but that's what they are (more or less, idk, they're an OEM).
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They might have changed their name to something friendlier in the 1990s, going to check wikipedia now.

Kind of lame that LG (Korean) rebranded from Lucky Goldstar.
 
zanydroid said:
They might have changed their name to something friendlier in the 1990s, going to check wikipedia now.
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Sparkle Power is likely the original name, under FSP group (which is a kind of boring abbreviation name). And the Chinese name is excessively self-important, it sounds like they were hoping to become GE style conglomerate with how self-important the name is. LOL.
 
Brucey said:
HEP-480-54A received. Weighty, definitely has some heft to it. Sitting on 16 280Ah cells for scale. Need to wire up a plug and prob get some new 5/16th lugs for those tiny output wires so I can hook it up to the distributor.
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Supply looks great. Did you purchase that programming module (I assume it can use it like the HEP-2300) or are you planning on doing it manually?

@Will Prowse it would be cool to see some of these Mean Well chargers as a review
 
mmmmmdonuts said:
Supply looks great. Did you purchase that programming module (I assume it can use it like the HEP-2300) or are you planning on doing it manually?

@Will Prowse it would be cool to see some of these Mean Well chargers as a review
Click to expand...
No programming capability on this model, I think that may be limited to the HEP-1000 and HEP-2300 (maybe) models which have some additional connectors. But my goal is just a light grid charge if battery drops below 50V so I don't need any custom charge curves etc.
 
Yeah I don't see myself ever needing the programmer. I just set it 55v and it works that way anywhere in the charge range, typically top ups from 50-55% but also overnight full charges to 55v for balancing.
 
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