Might some kind person run their diagnostic eye down this?
- poor starting - battery appeared knackered - would not hold much charge even when left on external charger for 2 hours @ 3 amps
- once jump-started, electrics were healthy, headlights bright, all electrics on
- new battery fitted
- charging light now on - alternator service message - battery voltage 12.3V (engine off) - 11.5V (engine on)
Could the alternator really have gone down at the same time as the battery?