A:Answer1. Yes
2. You can use any USB power adapter, just stay away from the ones that cost a dollar or some unusually low price, they'll only last about a week. You really get what you pay for.
A:AnswerHow they are handled has a lot to do with how long they last. They contain fine wires that cannot tolerate a lot of bending, and certainly very little sharp bending. When putting the cord into loops for storage or transport, let it loop naturally (do not twist it in a direction it does not want to go by itself) and keep the loop at a fairly large diameter, six inches or so.