Hot answers tagged electric-power
I called the shop where the dynamo was bought, and let me explain how to connect a cable. My summary: Unplug the plastic cover from the correct socket: One is for ground, one for phase. Thread the dismantled tip through one of the two holes in the cover. The length of the dismantled tip should be so that part of it protrudes below. Bend the protruding ...
You might look at just upgrading your current approach—a lithium battery based cell phone charger (like the popular New Trent ones) generally go a lot further than AA based ones.
Probably the easiest way to fix your problem is to reduce the amount of power the GPS on your phone is using. By default, most GPS tracking programs eat up an enormous amount of battery because they default to maximum-accuracy settings. However, if you're going on long enough bike rides that you are worrying about battery life, you can probably afford to ...
Only top voted, non community-wiki answers of a minimum length are eligible