My ride home today completed mile number 10,004 over a 2 year period. Last year I rode a total of 4,625 miles, and so far this year I've ridden 5,379. The season got cold quickly this year and I am hoping to switch from actual outdoor riding to indoor riding. This month is already coming in short of the 417 mile target and I have no plans to fix that. Last year I rode 500 miles in both November and December.
Power for my bicycle, used on lights and to charge my phone, comes from packs of 18650 lithium-ion batteries
. 18650s are very popular, and used in items from laptop computer to electric cars. Probably one of the most known applications are in electronic cigarettes
. This means there are a plethora of batteries to choose from which keeps them cheep. The problem I've had is with the quality. None of my battery packs have lasted more than about a year, and I try and keep two battery packs in case one goes dead. My last set was fairly pathetic in terms of longevity. They also stopped working every few months because they did not like the elements. Usually a wire would fail and I would have to solder a bridge. This battery pack is sealed and it means I can buy use better 18650 cells. So hopefully this means I won't have to buy a new pack this time next year.