I'm flying to Spain from the UK with Avios. I have a laptop with an "extended" battery (so the battery pokes out of the back of the laptop); the case on this battery has cracked, and the cell itself is exposed; you can see the terminal connection, too.
I want to know if I'm likely to be let on the flight with it as it is, or if I should put tape (duct or otherwise) over it, or if I shouldn't bring my laptop at all. It would be a great disadvantage if I can't bring my laptop with me.
I found a page here that describes extra batteries which are separate from the equipment:
Any battery that has been removed must be protected against short circuit (by placing it in its original retail packaging or by otherwise insulating terminals, e.g. by taping over exposed terminals or placing each battery in a separate bag or protective pouch).
However I'm not sure if the same applies for a Li-Ion battery that's in my computer to begin with. I'm worried that taping the exposed end would look suspicious, too. Should I also take the battery out of the laptop at security? The laptop is in perfectly usable condition and the only problem is that the battery is exposed (and may be tampered with) in its current state.