To stop the battery from going flat? We run every car in the yard every 2nd day to make sure we don't kill them.

They just dropped it back with a totally dead battery, and when I went to move it all the lights were pulsing :-( new battery and trip to Subaru to get the alarm sorted.

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They shall grow not old, as we that are left grow old:
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning
We will remember them.

Lest we forget .