I was never satisified with bicycle lights personally. They were never very bright, didn't look the way I wanted them to, were cheap and broke or vibrated apart, etc. I have a clamp made of sheetmetal that holds my batteries to my luggage rack, and all my wiring is quick disconnect. All I have to do is loosen the clamp, disconnect the wires, slide the battery out from the clamp, and bring them in the house. They are nicad batteries from r/c cars, and I have a 15 minute quick charger, so charging is a breeze. I have 3 batteries, two for my headlight, one for my brake light, and I can charge all 3 in under an hour. That's acceptable to me. Some might find it a hassle, but I think its less of a hassle than some other battery operated setups, and more reliable than bicycle headlights imho.