mtb
High-power LED mountain bike light
ian – Tue, 2006 – 05 – 23 05:25
In preparation for the 2006 Sydney 24 Hour, I wanted new mountain bike lights. Last year's light was a 20W halogen globe and two packs of ten AA cells. This was nice and bright, but the battery packs got rather hot and only lasted about 40 minutes each.
This year, I raced solo. Recharging two battery packs per lap wouldn't cut it. My plan was to spend about an hour per lap - each lap was 10km - and sleep for an hour or two when I charged the batteries. So I was aiming for 3-4 hours battery life at about the same brightness as a the 20W halogen.
The new system weighs 715 grams and lasts for about four hours at 9 watts of output. Charging the batteries takes under two hours.
