Yes, of course - up to the very large 6Ah battery fits in there. According to the manufacturer, the 4 is designed for up to 210m2 - although I can't say for sure and it depends on the height of the grass. It is described on the manufacturer's page below: https://www.einhell.de/shop... Greetings

If it is from Einhelll this should fit.
Do not have a lawn mower