Laptop powerbrick for Crystalsky charging hub

[Rob63]

The Crystalsky charging hub requires an input voltage between 17.3 and 26.2 VDC at a minimum of 57 Watts. A typical HP laptop power supply e.g. HP67774 is able to fulfill these requirements, supplying 19.5 VDC / 65 Watts. Even the connector is the same. However, the pinout is different and therefore a minor wiring change or adaptor is required to make it work:

HP power connector:
Outer tube = GND
Inner tube = +19.5 VDC
Pin = ID

Crystalsky charging hub:
Outer tube = GND
Inner tube = not required
Pin = +19.5 VDC

 

[EasyV]

Funny, I was pondering this just today while eyeing my HP laptop. Great catch!

 

[Miksterr]

Funny, I was pondering this just today while eyeing my HP laptop. Great catch!

Hi, thanks for this. I tried my HP without modification and wondered why it would not work. All sorted today’s you saved me $60

Mike

 

[mlewus]

Thanks very much for this! I had two of these sitting in my parts box, so this saved me some money. It's also much smaller than the DJI P4 power supply that I was going to buy. Even better, now I can stop charging my Ultra CS batteries with my lab bench supply and jumper wires, which was getting old fast.

Mark

 

[supergimp]

Thanks to the OP for inspiring me to look through that box of old power supply bricks in the garage. I have a couple of cheap (I think they were under 10 bucks on amazon) laptop supplies and quickly cracked one open (search YouTube for "open laptop power supply" and you'll see a bunch that use a little gasoline - worked AMAZINGLY well). A few minutes with a soldering iron and I was in business.

I've been using a P3 PSU that I got second hand, but am trying to reduce the volume of my gear to fit it all (Mavic Air + Batts + CS + Batts + Charger + CS + accessories and chargers) into one of the knockoff Pelicans from Harbor Freight and CNC some EVA foam to make it all fit. After opening the Laptop PSU I realized I could eek out even a little more space if I didn't use the original laptop PSU case but made my own. So I printed a smaller custom case.

So happy to not have to lug around that P3 PSU just to charge my display batteries.

The progression from P3 PSU to custom PSU:

 

[Lfarlow27]

The Crystalsky charging hub requires an input voltage between 17.3 and 26.2 VDC at a minimum of 57 Watts. A typical HP laptop power supply e.g. HP67774 is able to fulfill these requirements, supplying 19.5 VDC / 65 Watts. Even the connector is the same. However, the pinout is different and therefore a minor wiring change or adaptor is required to make it work:

HP power connector:
Outer tube = GND
Inner tube = +19.5 VDC
Pin = ID

Crystalsky charging hub:
Outer tube = GND
Inner tube = not required
Pin = +19.5 VDC

How did you modify the connector?

 

[supergimp]

Open the brick. The three conductors from the connector are soldered to the circuit board inside (which I found was much smaller than the case - hence I printed a smaller case). Just unsolder the two that need to be swapped and switch them, resoldering the connections. Takes two minutes.