another point raised by blackout

[Highlander]

No one has yet mentioned the scale of the EMP if one was to come our way,.. one big enough to do the `complete damage` that we are talking about is a most unlikely event,..[ although I do think one is over due ]

Smaller ones happen all the time, some just annoy people, like the people who live in Alaska, their radios are effected all the time

....but on big enough to damage the whole of the UK, every piece of electrical equipment,... far more unlikely

as for batteries,.. no-one seems to know if they would be effected or not,.. so best to protect just in case