This battery is compatible with a wide range of applications, including high drain devices, low drain devices, and solar/wind devices. 12v 4.5ah (as 4ah, 4.2ah & 5ah). Mountfield Hayter Stiga Lawnmower mower 12v 4.5ah battery ULTRAMAX NP4.5-12, 12V 4.5AH.
eBay