I am in exactly the same position as you, Michael, with the same Aldi battery.
These got recommended to me, Haven't bought it yet.
https://www.projecta.com.au/battery-chargers/
The pro range.
$97 at Bunnings
https://www.bunnings.com.au/projecta...pc400_p4420250
What battery box did you get for it? I am about to buy one.