NB v4 Drive parameter - SOLVED

[Sengar]

I'm currently working on a very tight install.

I was wondering if I could use the drive parameter instead of a resistor? Looking at the specsheet, the blue led has a forward voltage of 3.47, and the fully charged battery will give about 4.1 Volts when pulling 2 amps. With Erv's  calculation I'd have to put the Drive at 866  [1023*(3.47/4.1)]. This would be 84.5% of max drive.

Would there be a downside to using this technique?

I know I should measure the exact led voltage instead of using the specsheet, but I simply don't have the equipment needed yet.

[SA22C]

I’ve been running my saber this way for a couple of months now with no ill effect.   The manual for the nbv4 talks about this very use case so I think you’ll be ok.

[erv]

85% shoumd be just fine on the nb4 as its less sensitive to baterry ripple. Just use a good quality battery

[Sengar]

85% shoumd be just fine on the nb4 as its less sensitive to baterry ripple. Just use a good quality battery

I Will :) Thanks very much!

[Sengar]

Update:
Ihave been running the NBv4 with 2 blue wired to one pad, with the drive parameter at 85%.
This has been working perfectly!