Which hotend heater cartridge is 12v and which one is 24v?  

RE: Which hotend heater cartridge is 12v and which one is 24v?

I had a look to the eshop, but I can't find both of them.

So I can only help with this:

1. I would think that both cartridges have the same power - I think it is about P = 40W for both. If so you can measure the resistance (R measured in Ohm) of the cartridge.
2. P = U * I ==> I = P / U; R = U / I = U / ( P / U ) = U² / P
   (with I as current in Amper)
3. 12V cartridge:
   R = 12² / 40 = 144 / 40 = 3,6 Ohm
4. 24V cartridge:
   R = 24² / 40 = 576 / 40 = 14,4 Ohm

So the cartridge for 12V has the lower resistance. That is the way I would do it.

Best regards, Clemens

RE: Which hotend heater cartridge is 12v and which one is 24v?

I do have a multimeter (mostly to see if my batteries are still ok) but I'll try to follow your advice. Thank you very much.

RE: Which hotend heater cartridge is 12v and which one is 24v?

Thank you very much again, Clemens. It worked. The values differed a bit 4.6 iso 3.6 but I assume that is to be expected. 
problem solved. 

RE: Which hotend heater cartridge is 12v and which one is 24v?

This is great information. I had the same issue. Mine too came in at 4 ohms so I could identify it as the 12v Version. Musch appreciated!

Posted by: @clemens-m

I had a look to the eshop, but I can't find both of them.

So I can only help with this:

1. I would think that both cartridges have the same power - I think it is about P = 40W for both. If so you can measure the resistance (R measured in Ohm) of the cartridge.
2. P = U * I ==> I = P / U; R = U / I = U / ( P / U ) = U² / P
   (with I as current in Amper)
3. 12V cartridge:
   R = 12² / 40 = 144 / 40 = 3,6 Ohm
4. 24V cartridge:
   R = 24² / 40 = 576 / 40 = 14,4 Ohm

So the cartridge for 12V has the lower resistance. That is the way I would do it.

Best regards, Clemens