Cameron Sino 5200mAh Battery for Husqvarna Automower 320,330X,420,430,430X,550,440,450X,520,550,please note the year,important!!|Digital Batteries| - AliExpress
Battery Original 18V 4,0Ah 3,2Ah for 320 330X - shop.mower24.de
Replace the battery of Husqvarna Automower 320, 330X, 420, 430X, 440 and 450X - YouTube
Automower 420 battery replacement and cycle/capacity reset : r/automower