Idea: USB C Power Delivery charger?

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Photon Master
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Idea: USB C Power Delivery charger?

So I just ordered a powerbank that has dual 100 watt USB C PD 3.0 output ports. You can also charge it from dead in an hour by plugging a USB C 100 watt charger into them as an input port.

How sweet would it be to have a quad or even an 8 cell charger (18650, 21700, 26650, etc) that runs off of a high power USB C? I have some goofy little single cell chargers that have a micro usb port but you could really make something cool that ran off a power delivery USB C

Just a random musing Smile

Edited by: Photon Master on 12/08/2020 - 21:29
Ijon
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My wishes are more humble: 4 slots charger with USB-C QC3.0 input, capacity testing and manual charging current selection.
Although I wouldn’t mind having an USB-PD capable charger.

Ger
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Hi,
I did it for a single cell Convoy (built in version), but can be used as a stand alone one. Unfortunatelly, the IC is single cell only.
See here: https://budgetlightforum.com/comment/1722576#comment-1722576

Cheers,
Gergő

Ger
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But there is another easy way. Use an old, but reliable charger circuit, equipped with a USB-C PD sink port, like this:https://www.st.com/en/evaluation-tools/stref-scs001v1.html?ecmp=tt8249_g... or this:https://learn.sparkfun.com/tutorials/power-delivery-board—-usb-c-qwiic....
It’s the same ST STUSB4500 IC, which negotiate with the source and provide the necessaty voltage/amp combination on the output.

Cheers,
Gergő

Photon Master
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Those look awesome!

After I wrote that I got to thinking how cool it would be to have a light (such as my Firefoxes FF5) with a 100 watt PD input port. I could carry a power back on my belt or in a backpack and run a nice long wire to it

Photon Master
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djsz
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The Efest iMate R2 and R4 are exactly what you want. I have the R2 and can confirm that it works with USB-C to C power banks and wall chargers, but I believe the high current works only with chargers that deliver Quick Charge 3.0 over USB-C (which violates the spec but is actually pretty common). But you’ll get 0.5, 1.0, and 2.0A on most chargers.

Ger
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Does this lamp light while charge or being charged? The power management (balancing between charging the battery and supplying the system at the same time) is not an easy task.

Cheers,
Gergő

skinny_tie
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Photon Master wrote:
Ask and you shall receive (:

https://www.rovyvon.com/products/s2?variant=33068659605607

Meh. That RovyVon has a max input of 30W. OP is looking for a flashlight that can charge at 100W. Smile

Edit: I didn’t realise I was replying to OP, answering their own question. I may be an idiot, but my (completely non-serious) point stands. Smile

skinny_tie
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djsz wrote:
The Efest iMate R2 and R4 are exactly what you want. I have the R2 and can confirm that it works with USB-C to C power banks and wall chargers, but I believe the high current works only with chargers that deliver Quick Charge 3.0 over USB-C (which violates the spec but is actually pretty common). But you’ll get 0.5, 1.0, and 2.0A on most chargers.

In theory Quick Charge 3.0 at 20V 4.6A pretty close to USB Power Delivery at 20V 5A, but you have to have a suitable power supply. Quick Charge is certainly common for phones but I’m not aware of any laptops that use it, and I think powerful chargers are probably more common with laptops. I’m an iPhone and MacBook user so I’m not really in the market for Quick Charge and I’m happy to be corrected if I’m wrong.

Ijon
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djsz wrote:
The Efest iMate R2 and R4 are exactly what you want.
Thanks for pointing out, almost exactly what I need, except for capacity testing Sad
Photon Master
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skinny_tie wrote:
Photon Master wrote:
Ask and you shall receive (:

https://www.rovyvon.com/products/s2?variant=33068659605607

Meh. That RovyVon has a max input of 30W. OP is looking for a flashlight that can charge at 100W. Smile

Edit: I didn’t realise I was replying to OP, answering their own question. I may be an idiot, but my (completely non-serious) point stands. Smile

Me too dude!

djsz
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Ah, I didn’t appreciate OP’s need for speed of ca. 100W charging.

In a perfect world I’d be immersed in nothing but USB PD devices – laptops, phones, flashlights, chargers, cables…everything. I’ve spent a decent amount of time this summer culling my electronics to only things that at the very least will charge with a C to C cable, which felt like a win. Makes travel, commuting, camping, and even puttering around the house so much easier. 65-100W PD charging for all is another level entirely!

If only we could get all the USB C lights on this forum to charge with a C to C cable…

Photon Master
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I actually bought a 20,000 mAh graphene battery called the Flash 2 that has dual 100 watt PD input outputs however it hasn’t arrived yet. I’m also going to buy a GAN 100 watt charger and a car charger too. It supposedly charges in less than an hour from zero to 100%

Example: I was using a 10,000 mAh power bank this morning and now the thing is totally dead. It takes hours to charge by Micro USB. That thing would charge so fast if it had a 100 watt PD input!

https://chargeasap.com/collections/fast-charging-power-banks/products/gr...

Sirstinky
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For now the technology for handling 100W PD is isolated to laptops and other specialty devices running on power supplies plugged into mains power. To get that kind of power handling in a flashlight would take a lot of batteries, thicker wires, etc. It would make the flashlight large and more complicated to make which would make it more expensive-that one listed is nearly $400. I reviewed a headlamp with PD in/out but limited to 30W in the external battery. With 4*21700 it’s bulky, kind of heavy and has to be remotely mounted. It’s also over $200. You can buy cheap kits in AE for power banks with QC for like $14, but they don’t do 30W.

I’m sure new tech will be developed to better integrate faster and smaller PD charging in the not-too-distant future though.

Photon Master
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Very cool… I’ll let you know how the Flash 2 is when it arrives. I know it was a ridiculous amount of money to spend for something like that but you might make a similar argument for the 40+ flashlights on my shelf Smile

Photon Master
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Juslearnin
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djsz wrote:
The Efest iMate R2 and R4 are exactly what you want. I have the R2 and can confirm that it works with USB-C to C power banks and wall chargers, but I believe the high current works only with chargers that deliver Quick Charge 3.0 over USB-C (which violates the spec but is actually pretty common). But you’ll get 0.5, 1.0, and 2.0A on most chargers.

Djsz. Is there any chance you could measure the dimensions on your r2 for me please? Length width and height?

Also, can you confirm that it will charge at a lower output using an old fashioned 2.0 usb a and a usb a to usb c cable?

Thanks

djsz
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Yes, of course – 3 5/8” square by 1” high (so not tiny). It charges fine with an A to C cable plugged into a 12W USB A power supply and offers a choice of charge rates: 0.5, 1.0, 2.0A. Only 3.0A is not available without QC.

Juslearnin
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Thank you very much!