The max voltage rating at these points is right at 3.5v. It does get lower depending on the batteries you are using and how much power they have left, but the max voltage is 3.5v and it is recommended that you base your led mods off of this number for the best results.

[caption id="attachment_198" align="aligncenter" width="500" caption="Xbox 360 Controller Power Points"]Xbox 360 Controller Power Points[/caption] [caption id="attachment_197" align="aligncenter" width="500" caption="Xbox 360 Controller Power Points Close Up"]Xbox 360 Controller Power Points Close Up[/caption]