Thanks, Illumn did have them in stock. I had been checking various vendors periodically, and the last time I had checked Illumn they were showing out of stock. Should’ve checked again prior to posting here, I suppose.
Has anyone tried using this charger with a USB Power Delivery supply via a barrel adapter that performs the USB-PD negotiation to send 12V?
And what size is the barrel connector?
Someone recently dropped a hint that made me realize something like this might be possible, so I went looking and found out they exist. I’d like to avoid keeping one more power supply cluttering up the drawer I keep my charging stuff in if this is workable.
One example (and there are many more on Amazon):
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You’d have to find a PD supply that supports 12V/5A, not just 3A as most do. This is generally going to require PPS, and the Adafruit cable that supports PPS seems limited to 2A: Re-programmable USB Type-C PD to 2.1/5.5mm Barrel Jack Cable : ID 5501 : $19.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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12V/5A is only needed if you want to charge 4x3A LiIon, I guess?
Welcome to BLF!
Good point about making certain the power supply supports the needed amps. Due to the way the required levels are structured, I suspect that would mean a 100W supply (20V, 5A) in order to get a supply that that can also do 12V, 5A.
From some brief reading on PPS, it’s not clear to me that PPS would be needed. Are you saying that due to 12V not being part of the mandatory PD standard?
That would be my hope, but USB PD is complicated enough I don’t know if the adapter I linked would negotiate properly with a 12V, 3A source
If it does work, I would expect that trying to charge at a rate that requires more than 36W would cause the source to shut down. Hopefully nothing worse could happen.
I might just go ahead and order an S4+, since it looks like my best option regardless of the power supply used, plus one of those barrel adapter cables to try and consider it a bonus if it works. I do have at least one USB-PD supply currently that claims 12V, 3A PD support.
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We provide a conversion head solution that can be more lightweight
The adapter requires a power of over 65W and USB-C output
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This conversion head is sold separately?
65W is only needed if I use highest charge current on all slots? Would make sense
Oh wow, that’s wonderful. Where can I buy this adapter?
I just bought two S4+ V3 from Illumn yesterday.
Will soon be available for sale on retail and wholesale platforms
As it is a DIY product, manual operation is required
If the adapter power is not appropriate, it may cause it to be unusable
By default, conversion head accessories are sold, and customers need a backup high-power USB-C cable and high-power adapter at home
We expect to provide a complete set of DIY accessories if the customer does not have these accessories
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If I only want to charge with a low current, e.g. 4x 1A instead of 4x3A, it should also work with a power source with less power?
It looks like a USB-C PD trigger, but I don’t know much else about it. The charger works on 12v 5A, and the previous USB PD 2.0 spec only goes up to 12v 3A. The 12v output is no longer available in 3.0, so I have no idea how they’re making it work unless bucking down from 20v.
This answers a few of the questions being asked in this thread, but from the latest USB PD documentation for fixed voltage power ranges:
SPR:
3A: 5V, 9V, 15V, 20V (PDP Range 15-60W)
5A (requires 5A cable): 20V (PDP Range 60-100W)
EPR (all require EPR cable, and entry into EPR mode):
3A: 5V, 9V, 15V, 20V (PDP Range 15-60W)
5A: 20V (PDP Rang 60-100W)
5A: 28V, 36V, 48V (PDP Range 100-240W)
You are limited to what vendors choose to implement on the 12V side, since it is not a requirement of the specification. I have not seen any who implement greater than 3A on 12V using fixed voltage steps.
PPS can allow up to 5A with a 5A cable @ 20V with a range of 5-21V for a PDP range of 61-100W. AVS can allow for 5A, as well, from 9-20V, with a 5A cable at the 12V/5A current we are talking about.
You can find the relevant specifications here: USB Power Delivery | USB-IF - see page 76 and following for just these specific details.
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For anyone wondering, They offered these adapters to me via email for $3each + $20 shipping to the USA
I’m definitely interested, but the shipping makes it a tough sell.
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Bottom line, what’s the difference between v2 and v3?
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v3 - v2 = v1 
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Beeper can be deactivated (but the display gets also turned off)
Storage mode to charge LiIon to 3,7V only
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Thanks!
Yep, thank you!
I have a couple of v2 chargers, and it looks like I’m not missing anything that I care about with v3. 
Have only one V2, but yes 
Waiting for a new charger from Vapcell 
Definitely seems to make the most sense to wait until Illumn or another retailer has them.