I agree with the light power set. I like lights strong enough to get the on-coming cars to flash you to get you to dim Your lights. I use a NightSum Team Issue setup, an old one that uses metal MR16 light holders. I replaced their Halogen bulbs with a 50 watter and got a bigger battery. A 100 watt headlamp could be had for ~ $200 and have a 1 hour run time.