Does this require special knowledge and experience? I would be afraid to try it myself as I suspect that I or my devices would be harmed, either in the process or later on.
Yes, it does. It's not rocket science, but one must know what he is doing, and as with everything that can become really dangerous, it is better to err on the side of safety.
To my knowledge, this is the best informational site around regarding various battery technologies (including Lithium), and how to use them safely.
