I am trying to power some LED strips with batteries.

[DeathAngell]

So here is everything summed up

I am trying to make a Christmas present for someone. They work at a roller skating rink. I want to put a small strip of green LEDs on each of their skates (on the bottom).

I have these lights picked out:
- http://www.getfpv.com/green-led-strip-w-adhesive-back-1m.html
These lights require 12vDC power.

So I found this battery pack:
- https://www.amazon.com/Genssi-Battery-Switch-Holder-Power/dp/B00PMDW7LK
This pack will produce 12v, enough to power the entire LED strip if I use 1.5v batteries. Here is the question:

I would want to cut off 2 small strips of 4LEDs off this strip so there can be ONE STRIP on each skate. How would I power both of these efficiently?

 

[DeathAngell]

Hello... for me it does... it's a easy click and at my door a few days later... B D

I am kinda debating getting them off their actual site though mainly for the rechargeable battery.

 

[DeathAngell]

Hello... for me it does... it's a easy click and at my door a few days later... B D
https://www.google.com/search?q=3528+SMD&rls=com.microsoft:en-US:IE-SearchBox&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjc3eLexebQAhUCLSYKHTA5CeUQ_AUICSgC&biw=1655&bih=871&dpr=1.16#imgrc=_

You can use that first image and chart on voltage and current characteristics with the color of the LED used... It's not linear for each color, and will change power calulations for the 3528 SMD LED.

What do I do with that?

 

[Carl-JR]

each color led has diff voltage and max current specs but if 12v is what your after use a 12v garage door opener batt . its half the lenth of a AAA batt and close to same diameter ...BETTER IDEA WOULD BE VALVE STEM LIGHTS FOR BIKES THAT LIGHT WITH MOVEMENT .. very compact and self contained each wheel or under skate there are multi color and there all less then a buck or so each from ebay . Another no power needed idea would be led fans for cpu . (take a air hose to one of those fans and they will light up ) so if the case and fins were removed and center mounted to wheel and out side to skate with small wire effectively the lights would get brighter the faster you skate and never need batt power ....not sure about how fast they would have to skate or details but its a thought to consider