I have a Niterider Lumina 700 headlight that I use to commute. It only gets used for 15 minutes each night.

Each night when I get home, I re-charge it, and keep it charging via my computer overnight.

Is this okay? I know next to nothing about modern batteries. Am I in actuality doing more harm than good?

Shall I use the light for several days in a row before charging? (It supposedly can go for 1.5 hours or so on high).

What is the best charging technique to keep this battery lasting for as long as possible?

Thanks for helping this light/battery noob!