The manufacturer of my light doesn't go into details on charging. Reading on the web it appears these batteries have no memory and therefore it's better to have multiple short charges rather than one deep charge?
I'm a daily week day commuter, about a half hour each way, should I just charge it every night, over night 5 days /week? In blink mode it's lasting about 10 days before the charge light goes red indicating it needs charging. As the daylight hours decrease I'll be using it in steady mode and expect that to drain the battery quicker.