Hi Leah, thank you for your interest in our DIY magnetic power connectors.  The connectors have 2 conductors, so you could connect two wires.  LED strips typically require three wires (power, ground, and signal), so to get all of those connected, you'd need to use two connectors (power and ground in one connector, and signal in the other).  Another option would be to power the strip directly (not through the Arduino), then you could use the magnetic connector for ground and signal.  I hope this makes sense.  Let me know if you have any additional questions.

Leah Bellefleur Yes they should be fine.  The only concern would be if you had a lot of LEDs in the strips.  If the total current is very high (above 1.5A for example), you might not want to use these connectors.