>>1265512Kryptonite can make you new keys if you still have the little key number plate that comes with their locks. Or you can just borrow an angle grinder or get your friendly neighborhood thief to do it for you.
>>1265292Not him, but I believe that they're all fairly samey except for output. The DH-3N72 has 3W of output, while the DH-1N70 has 1.5W of output. Since the 3W output one only adds a trivial amount of extra drag, go for that one. A good alternative is the Sanyo H27, which looks a lot nicer than Shimano's eyesores, is cheaper, and while it's inefficient when switched off, it's quite efficient when switched on, compared to the rest. Here's a good article on that:
https://www.cyclingabout.com/dynamo-hub-drag-lab-testing/ 