I'm looking to set up a 1-meter strip of WS2812B LEDs (60 LEDs) with an off-the-shelf RF LED controller with a remote. The LEDs want a 5V supply - I've tried running them off 3.7v but the colour accuracy goes out the window and they start flickering and doing all sorts of other nonsense.
To work around that I'm considering using a DC boost converter like one of these pololu ones. I'll wire up a couple 18650 batteries in parallel to supply the voltage and my plan is to hook them up to the LEDs via the boost converter.
Idiot question time: is it safe to wire the boost converter directly to the output terminals of the battery/batteries and take the 5V off the +5v pin using a common ground? Or am I doing something dumb?
Also, I'm not 100% sure how to go about charging this setup. One option would be to put the batteries in cases and use an external charger with replaceable cells.
Would it make more sense to get one of these? This should be able to handle both charging AND stepping up the voltage, am I right?