Bakin4Life
Oink
This is a good strategy, concerning Li-Ion. 80-90% max charging will maximize battery life.I charge when I see it in the 30s and rarely ever charge to 100 (usually just mid 90s). It seems really quick like 1.5 to 2 hours max. I use the charger/cable it came with.
I see the 21700s are readily available, though, and someone will soon post up procedures on swapping out the pack.
That said... when I finally throw down the cash for one of these, I'll figure out some kind of charge mgmt strategy, and not let it charge to 100% every time.