The RoadRat is a perfect choice for the cyclist on a budget. The RoadRat uses the same great 10 watt headlamp found on both the TrailRat and Evolution. In place of the NiMH battery a proven and dependable gel cell battery is used. Riders can expect burn times of 2:30 hours from the RoadRat, combine this performance with legendary NiteRider toughness and durability and you have a perfect commuting light guaranteed to shine for years to come.