A little pick-me-up . . .

. . . was needed by my battery. I’d neglected my car for a couple of days and the lower temperature coupled with all the 'trons whizzing around, even at rest, seemed to have drained the battery a little. I hope that was the reason for the clock being wrong (blank) this evening. 

But this Halfords charger is pretty good: it revived a nearly dead caravan battery last year.