If you cannot tape a battery and still put it back into its respective device, don't tape it. This is just an extra precaution to prevent accidental short-circuiting. When possible, the FAA advises that you cover the positive and negative ends of such batteries with tape. It is safe to put it in your checked luggage. For example, even though you probably wouldn't want to check your laptop computer in at the counter, its lithium-ion battery is safely installed in the computer. Lithium-ion batteries in checked luggage are okay if they are installed in some kind of device. Contact your airline and ask for clarification. If you are ever unsure about how the rules apply to your travel, don't just guess.
We will summarize the rules in this post. You can learn all the details about flying with lithium-ion batteries by visiting the FAA website. Those rules are not too terribly onerous, and most people can abide by them with very little hassle. A number of years ago, the Federal Aviation Administration (FAA) came up with their battery rules in order to minimize the risk of fire on commercial aircraft. That's true, at least where air travel is concerned. You have probably heard that there are some restrictions on traveling with lithium-ion batteries.
