OHM's Law
I=V/R = amps
or voltage divided by resistance = amps
3.7 volts divided by 1.8 ohms = 2.05 amps
Power or Watts is Amps X volts. In this case 2.05 x 3.7 = 7.585 watts
a standard carto is about 2.5 ohms or 5.476 watts
plus cartos are $1.60... so 1 a week isn't bad for the TH benefit![]()
correct...I am an electrician among other things.
Online Conversion - Ohm's Law Calculator
but thats not what you said and what I posted a reply to...
Got my LR Cartos in. LR Boge 1.8 ohm LR (low resistance) Cartos.....really big improvement, better TH. Battery life seems fine. Would highly recommend this approach. Pretty close to a 5volt passthrough. Really makes my move away from carts a done deal.
do the math.....
1.8ohms at 5v = 2.7 amps and 13.88 watts.....as you draw on a carto it heats up...heat rises resistance drops...on a passthrough there is no limiting...so that 5v is steady while that 1.8ohm is dropping = 14watts very quickly.
I stand by my statement. Be careful, on a long draw with a LR carto in a PT you can burn it up quickly. I understand you were not saying use a LR on a PT...i was warning why you should not.