Would you prefer your e-bike LEDs powered by a small separate battery, or wired directly into the main bike battery?

Honest opinion — would you ever wire LEDs into your e-bike battery, or is that a bad idea?
Trying to design an LED neon setup that works on any e-bike (48–72V).
I’m torn between:

• Wired system (fused + regulated)
• Standalone battery that powers the LEDs only

Which one makes more sense to you as a rider?
What annoys you more:
Switching batterys
or extra wiring and harder install?

Curious what the community thinks.