Hi all. Wanted to share a technique I’m using to charge my board using usb-c. You can buy these tiny usb-c boards (search “ZYPDS” on ebay, ~4$. This board does the usb-c power negotiation to 20V. You can then step that up with a cc/cv boost converter to your charging voltage.
This lets you use the tiny 100w usb-c chargers to charge your board. I find this particularly useful because I’m always carrying one anyway for my laptop.
That’s it really cool
How does this booster works for you? I have one that I tried boosting from 19 V to 42 V, but it gets extremely hot and the maximum current I could set was bellow 1 A or it would shut down
This would be great for a campus cruiser kinda board.
My thoughts exactly. Like a USB-C E-Penny board. Could have dual USB-C ports for faster charging
So I guess the major disadvantage is that you have to fit all that inside. Doesn’t seem difficult to set up though.
The actual USB-C board is pretty small. I think you’re looking at the BMS, which you’d definitely want in there anyway.
oh I see that now thanks. I thought it was the DC to DC converter actually.
Are you that guy on reddit that posted about this?
Sorry for the lack of updates, been unable to test charging my board via bms / this charger b/c I don’t have the proper wiresize to get a good crimp on the balance cables. Getting the wire today, so will try to update with charging efficiency. Might also do an experiment to see if it’s possible to use 2 in parallel (sorta sketchy, but with same charger maybe fine). Have not posted about this on reddit, only a comment in a the bay esk8 group.
Dual USB-C charging would be dope since theres so many dual USB C chargers out there anyway
Plz share link to 200W dual USB C charger
90W single is the best I could find, unfortunately.
Great minds think alike I guess.
At 90W a 10s4p board would take a little over 5 hours to charge from 0 to 100%
yeah charging usb c is good for small range board. I read that it’s charging at around 2.5A
For our neoONE XS we build USB C charging into our BMS, can charge at 100W maximum.
Nice! are you also using the ZYPDS?
We built a charging circuit into our BMS which is part of our battery PCB.
is the BMS going to be available for purchase separately, and is it charge and discharge?
and got some pics to tease us with?