Glow plug(s) may be fucked, so the pre heating is taking longer, using more from the battery... or not happening, so the starter motor needs to turn it over more, taking more from the battery.
@mdcc_tester
No joy, as expected with overnight disconnection.
Plan to try a battery charge to 12v+ this eve. If the battery won't achieve 12v+ then attempt to borrow a 12v battery to try.
Exactly the same symptoms as before (won't surprise you) - would embed video if I was clever enough!
Glow plug(s) may be fucked, so the pre heating is taking longer, using more from the battery... or not happening, so the starter motor needs to turn it over more, taking more from the battery.