Powering LED Lighting

[Xegaton]

I want to use these LED strips in a couple costumes I'm making and I'm trying to figure out how much power I'll need. I will only be using 6 LEDs connected to a single battery pack. This process will be repeated a couple of times for various parts of the costume. Can I get away with using a 9v Battery Connector like this? Or will I absolutely need something bigger like the 12v battery pack here in order to maintain a reasonable amount of brightness/battery life?

Also, if I wanted to install an on/off switch, could I use this one? Would I need a resistor?




Same Links As Above:
LED Light Strip: https://www.amazon.com/gp/product/B01DVKVQU8/ref=ox_sc_act_title_4?smid=A1EOYVRQHEZZ3I&psc=1
9v Battery Connector: https://www.amazon.com/gp/product/B06X8YZJ64/ref=ox_sc_act_title_3?smid=A2P42HMWPZOAW1&th=1
12v Battery Pack: https://www.amazon.com/gp/product/B01N91OF9H/ref=ox_sc_act_title_2?smid=A2VN47FGA6FR8&psc=1
On/Off Switch: https://www.amazon.com/gp/product/B01LMZZFWO/ref=ox_sc_act_title_1?smid=ADQJP9NWIFYM2&psc=1

 

[Alabalcho]

Don't intermix voltage (9V, 12V) with current and capacity. You can safely run single LED from a coin-size battery. You will want to connect your LEDs in series, and then in parallel.

Your LEDs have a spec - it says how much voltage they need, and how much current they eat. Plenty of LED calculators around the world.

Check Instructables.com - you'll find like-minded people there, with ready projects.