NBv3 voltage?

[Nirraven]

I heared that a fully charged li-ion battery have around 4.1v.
Does this affect the output voltage for the LED's or FoC from the NBv3?
Or regulate the NB the voltage to 3.7 no matter if the battery have 4.1v?

Have someone measured this?
Thanks

[Silver Serpent]

A fully charged li-ion battery is actually 4.2v, but it doesn't stay that high for long. It will drop down to the 3.7 range very quickly and remain there for the majority of the time.

The NB doesn't regulate the output voltage, but your LEDs are safe if you're using a resistor that you calculated using 3.7v as the source voltage. The brief time that you're running at 4v+ won't harm your LEDs.