...btw - one comment I might take exception to is the recharging time on the Nickel charger. My understanding is that the charger runs through a charging process and it'll take the same amount of time for it to run through this process regardless of how much juice is left in your battery.

For me, with pretty much ZERO charge left in the nickel battery, it takes about 4 hours for a complete charge. If my understanding of the charger is correct it would take this same 4 hours even if I had only 1/2 charge left. That might be what you're seeing, Mr Miro?

My own personal thoughts on the Lithium vs the Nickel is that the Lithium seems to have a bit of an extra kick in it. I've been told this is because Lithium, in general, has a more even power curve than the nickel, but I could swear I actually go at least 2-3 mph faster with the Lithium regardless of the power curve situation. I believe this so much, that I ride on the Nickel first, and then switch over to Lithium just before I get to a stretch of road where I have to keep up with the cars.