Originally Posted by
ItsJustMe
The only reason I'd go for a halogen these days would be if I ABSOLUTELY could not afford $60 (for a flashlight and charger), but I could afford $50 (about what I think it would cost to build a cheap halogen with battery and charger). Even then I think I'd see if I could find some bottles to return to make up the $10, because a flashlight is so much more convenient.
You could cut that down to $35, for flashlight, charger, and battery.
http://www.dealextreme.com/details.dx/sku.39359
http://www.dealextreme.com/details.dx/sku.936
http://www.dealextreme.com/details.dx/sku.5776
If you can't afford that, well, you shouldn't be riding a bike at night.