Sounds promising, I’m kind of intrigued to see how my setup works out. Might not get to it until Jan depending on a variety of things though
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Nope.
And there never will be. Not by using two USB charging adapters, two cables, two trigger boards, perhaps some diodes, a boost converter, and the needed connectors and wiring.
But since it’s the only way to do this great USB charging idea perhaps we can eventually package it all together better. 
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Too many words, not enough make usb c worky
Wordy make worky more better. Smaller wordy make worky not work.
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Boosting a 20v5a USBC laptop charger to around 50.4v @1.75a (after inefficiencies and whatnot) is a great solution for a slow charger imo. Or a small commuter board. You can recharge it while you exist (say after a commute) and help preserve cycle life with the slow charge.
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https://m.aliexpress.com/item/1005002008893587.html
Found another pd output buck with double the output of pds100 but more than double the price so eh …
https://m.aliexpress.com/item/4000149214751.html
That is a lot of confusion
https://m.aliexpress.com/item/1005002877988981.html
70V input! Huh that’s pretty good
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“Full blood VOOC” lmao sounds funny
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Ain’t no half blood I guess…
I made a new thread for talking about USB C stuff that isn’t for HV batt/board charging.
USB C PD DIY Power Bank/stuff not related to charging boards HV battery.
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Picked these up, not sure when I’ll get around to trying out my experiments but I’ve got em now
This boost converter is an aluminum PCB, which is pretty cool
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Something just occurred to me…how are you going to limit each USB port to 60W and/or limit the total to 120W? The pack will try to draw as much current as it can.
The pack can try to draw as much as it wants, the power adapter will not provide more than its rating
That’s my concern…standard CV power supplies like the adapters will shut down to prevent damage if you try to run them at above their ratings. Only constant-current (CC/CV) supplies will limit the current and continue to run.
Also, each port can only handle 100W so you’ll need a way to force them to share current if you are drawing the 120W max of the adapter. You wouldn’t be able to let one port handle the full 120W.
I realllly want this to work but I’m wondering how now that I’m giving it more thought.
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The boost converter he’s using looks like it has two pots, most likely for setting current and voltage limits.
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Ahhh….good eye! That solves a lot of problems. Now we just need the adapter channels to not fry each other or one to just shut down. 
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I think it might have been asked about already but what about two 20V PD outputs going to two BMS/packs in series? Then just use BMS that are ok with series config and that might work good.
or with the series connection still frying the supply?
oh yeah… then you can not use a single port/charger of the two maybe possible… unless you have another port/booster or use for single 20V PD supply or also each port at a time to fully charge, halftime switches no fun though.
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Yup, there would be fire.
The “ground” for the top pack’s circuitry would be connected to the ground for the bottom’s pack circuitry, short-circuiting the bottom pack through those grounds.
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diagramsz plz
I can make a template
You still have the ground issue and fire.
You would need fully isolated power supplies…not cheap.
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