Battery dead

My battery died in the Mondeo....surprisingly it started when I used jump-leads, but sadly after disconnecting the leads, it died. I was bemused, but people tell me that it's short circuited completely, so when I disconnect the jump leads, the circuit is broken. EG the battery is totally dead.

Will buy a new one from Halfrauds shortly...hopefully fix the problem. Seem to have broken my inflata-pump also so Halfrauds will be getting all my dollars...bah!