Let me preface: This is my first post on this exchange, so I will try to provide as much context as possible. If some details are lacking, or I've left this question overcooked, I apologize.
So, I am building a prop for an upcoming convention on the east coast, and part of it involves lighting. I've tried to reduce and streamline the amount of soldering and the like I will have to do, as I am on a budget of time and attempts, so this might seem a bit unconventional: I am making some light-up vacuum tubes with LEDs, and I was going to use the same method outlined here: http://www.instructables.com/id/Glowing-Steampunk-Flash-Drive/
The end result will be the same, however there will be four in total, and they will be powered by a bus-powered USB hub connected to a 16,500mAh battery, which is intended for charging smartphones, tablets, and other devices of the sort.
I wanted to use this warm white surface-mount LED right here: http://www.digikey.com/product-detail/en/lumileds/MXA8-PW35-0000/1416-1094-6-ND/4031757
I believe I can mostly understand the relevance of each field on its little data sheet, but I need to be pretty much certain on a proper resistance.
So the question is, what resistor should I use for it? The Battery has two outputs, both 5 Volts, but one has a 1 Amp output, and the other is 2 Amps. The test current for the LED is 100 mA, and the maximum is 200 mA, with a forward voltage of 3.05 Volts. If I were to use a 22 ohm resistor, would that be proper for achieving ~roughly~ test voltage? Also, would the test voltage be particularly bright? If not, would it be smarter to order two sets of resistors, one for the maximum and one for the test? It has been a long time since I've done even basic electronics.
I just want to make sure I'm understanding this information correctly, and if I'm not, I would greatly appreciate a knowledge smackdown by someone who does. Thanks in advance!