Just started a new job (finally!) that is on the other side of my town- guesstimate 6 miles or so, depending on route, which I still have as yet to figure out.

Anyway, I currently only have just one light. I have doubts if it will be enough on it's own, plus I really want the redundancy factor if this one decides to start acting up. I can mount this on the bars or the helmet.

Without 'upgrading' to 26650 cells, what would you recommend to supplement/compliment what I already have? Budget is tight, but might order from a US vendor for quicker ship time (so long as it's a reasonable upcharge).